View Filing Data

63,398

61,918

Capitalized software development costs, net

15,979

13,956

Total current assets

204,493

188,454

8,925

6,824

Property and equipment, net

13,155

12,769

Intangible assets, net

30,868

40,808

Goodwill

185,138

Accrued expenses and other current liabilities

32,115

26,820

Total assets

474,694

460,813

Current liabilities:

Accounts payable

2,902

7,254

20,174

20,874

Short-term portion of contingent consideration

118,260

104,184

2,008

143,344

134,320

Contingent consideration

4,145

3,858

1,300

1,743

Other long-term liabilities

317

468

3,155

3,119

Commitments and contingencies (Note 6)

152,261

143,508

Stockholders' equity:

Common stock

547

530

Additional paid-in capital

444,840

419,628

Accumulated other comprehensive loss

(92)

(63)

(122,862)

(102,790)

322,433

317,305

$ 474,694

$ 460,813

[1]	See Note 3 for a summary of adjustments.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)
shares in Thousands, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

^[1]

Sep. 30, 2018

Sep. 30, 2017

Revenues

$ 58,734

$ 45,424

$ 165,472

$ 125,586

^[1]

13,517

10,871

36,989

30,438

^[1]

45,217

34,553

128,483

95,148

^[1]

31,709

32,048

93,086

77,860

^[1]

Research and development

7,261

5,883

22,001

17,840

^[1]

11,268

8,920

34,808

25,639

^[1]

50,238

46,851

149,895

121,339

^[1]

Change in fair value of the common stock warrant liability

(5,021)

(12,298)

(21,412)

(26,191)

^[1]

Other income (expense)

Interest income

578

281

1,474

749

^[1]

Interest expense

(6)

(4)

(13)

^[1]

^[1]

(3,490)

Other income (expense), net

578

275

1,470

(2,754)

^[1]

(4,443)

(12,023)

(19,942)

(28,945)

^[1]

130

(60)

^[1]

$ (4,460)

$ (12,074)

$ (20,072)

$ (28,885)

^[1]

Shares used to calculate basic net loss per share

$ (0.08)

$ (0.23)

$ (0.37)

$ (0.56)

^[1]

54,263

52,592

53,660

51,910

^[1]

Shares used to calculate diluted net loss per share

$ (0.08)

$ (0.23)

$ (0.37)

$ (0.56)

^[1]

54,263

52,592

53,660

51,910

^[1]

Subscription and Support

Revenues

$ 56,170

$ 43,032

$ 157,842

$ 119,422

^[1]

11,174

8,680

30,048

24,662

^[1]

Professional Services

Revenues

2,564

2,392

7,630

6,164

^[1]

Statement Of Income And Comprehensive Income [Abstract]

$ 2,343

$ 2,191

$ 6,941

$ 5,776

^[1]

[1]	See Note 3 for a summary of adjustments.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

^[1]

Sep. 30, 2018

Sep. 30, 2017

^[1]

Net change in unrealized gain on marketable securities, net of tax of $0 for the quarters and nine months ended September 30, 2018 and 2017

$ (4,460)

$ (12,074)

$ (20,072)

$ (28,885)

Other comprehensive income (loss)

(29)

Other comprehensive income (loss)

(29)

Comprehensive loss

$ (4,435)

$ (12,033)

$ (20,101)

$ (28,876)

[1]	See Note 3 for a summary of adjustments.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

Beginning Balance at Dec. 31, 2017

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) (PARENTHETICAL) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net change in unrealized gain on marketable securities, tax	$ 0	$ 0	$ 0	$ 0

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) - 9 months ended Sep. 30, 2018 - USD ($)
shares in Thousands, $ in Thousands

Total

Common Stock

Additional Paid-in Capital

Accumulated Other Comprehensive Loss

Accumulated Deficit

^[1]

$ 317,305

^[1]

$ 530

$ 419,628

$ (63)

$ (102,790)

Beginning Balance, shares at Dec. 31, 2017

52,983

Stock option exercises

13,520

$ 17

13,503

Stock option exercises, shares

1,658

Vesting of restricted stock units, shares

Acquisition of common stock for tax withholding obligations

(3,325)

Stock-based compensation

15,034

Other comprehensive loss

(29)

Ending Balance at Sep. 30, 2018

(20,072)

$ 322,433

$ 547

$ 444,840

$ (92)

$ (122,862)

Ending Balance, shares at Sep. 30, 2018

54,643

[1]	See Note 3 for a summary of adjustments.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

Cash flows from operating activities

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Thousands

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

Adjustments to reconcile net loss to net cash provided by (used in) operating activities:

$ (20,072)

$ (28,885)

^[1]

Depreciation and amortization

16,767

14,786

^[1]

Change in fair value of common stock warrant liability

^[1]

3,490

Change in fair value of contingent consideration

287

367

^[1]

Stock-based compensation

14,707

12,951

^[1]

(Accretion) amortization of purchase discounts/premiums on marketable securities, net

(602)

100

^[1]

Net foreign currency losses

334

Provision for (benefit from) doubtful accounts receivable

(443)

(420)

^[1]

(19)

602

^[1]

Changes in operating assets and liabilities:

Accounts receivable

(1,735)

(3,541)

^[1]

(2,392)

(1,324)

^[1]

Accrued expenses and other current liabilities

(5,017)

(4,623)

^[1]

Accounts payable

(4,401)

(4,185)

^[1]

(58)

^[1]

Other long-term liabilities

13,925

14,425

^[1]

(128)

^[1]

Net cash provided by operating activities

11,317

3,674

^[1]

Cash flows from investing activities

Purchases of marketable securities

(103,624)

(51,647)

^[1]

Proceeds from maturities of marketable securities

91,840

49,561

^[1]

Proceeds from sales of marketable securities

7,118

Capitalized software development costs

(4,640)

(3,345)

^[1]

Purchases of property and equipment

(4,588)

(3,729)

^[1]

Net cash used in investing activities

(13,894)

(9,160)

^[1]

Cash flows from financing activities

Principal payments on capital lease obligations

(443)

(549)

^[1]

Proceeds from exercises of stock options

13,520

8,672

^[1]

Acquisition of common stock for tax withholding obligations

(3,325)

Payments of initial public offering costs

^[1]

(110)

Net cash provided by financing activities

9,752

8,013

^[1]

Net increase in cash, cash equivalents, and restricted cash

7,175

2,527

^[1]

Cash, cash equivalents, and restricted cash, beginning of period

31,504

22,518

^[1]

Cash, cash equivalents, and restricted cash, end of period

38,679

25,045

^[1]

Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets

Cash and cash equivalents at end of period

38,401

24,645

^[1]

Restricted cash included within other assets at end of period

278

400

^[1]

Total cash, cash equivalents, and restricted cash at end of period shown in the consolidated statements of cash flows

38,679

25,045

^[1]

Non-cash financing and investing activities

Stock-based compensation capitalized for software development

327

Net exercise of stock warrants

14,870

Capitalized software development costs included in accounts payable and accrued expenses and other current liabilities at end of period

328

151

Purchases of property and equipment included in accounts payable and accrued expenses and other current liabilities at end of period

$ 55

$ 42

[1]	See Note 3 for a summary of adjustments.

Company Overview	9 Months Ended
Company Overview	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Company Overview	Note 1 – Company Overview BlackLine, Inc. and its subsidiaries (the “Company” or “BlackLine”) provide financial accounting close solutions delivered primarily as Software as a Service (“SaaS”). The Company’s solutions enable its customers to address various aspects of their financial close process including account reconciliations, variance analysis of account balances, journal entry capabilities, and certain types of data matching capabilities. The Company is headquartered in Los Angeles and has offices in New York, Vancouver, London, Paris, Frankfurt, Sydney, Melbourne, Ede, and Singapore.

Basis of Presentation, Significant Accounting Policies and Recently-Issued Accounting Pronouncements

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation, Significant Accounting Policies and Recently-Issued Accounting Pronouncements

Note 2 – Basis of Presentation, Significant Accounting Policies and Recently-Issued Accounting Pronouncements

The accompanying condensed consolidated financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information. Certain information and disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. Accordingly, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2017 filed with the Securities and Exchange Commission (“SEC”) on March 8, 2018. The condensed consolidated financial statements are unaudited and have been prepared on a basis consistent with that used to prepare the audited annual consolidated financial statements and include, in the opinion of management, all adjustments, consisting of normal and recurring items, necessary for the fair statement of the condensed consolidated financial statements. The condensed consolidated balance sheet at December 31, 2017 was derived from audited financial statements, but does not include all disclosures required by GAAP. The operating results for the quarter and nine months ended September 30, 2018 are not necessarily indicative of the results expected for the full year ending December 31, 2018.

Use of estimates

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the dates of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period.

Reclassifications

Certain prior-period amounts have been reclassified to conform to the current-period presentation. These reclassifications had no impact on the previously-reported consolidated results of operations or stockholders' equity.

Significant accounting policies

The Company’s significant accounting policies are detailed in "Note 2: Summary of Significant Accounting Policies" of the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. On January 1, 2018, the Company adopted Accounting Standards Codification No. 606, Revenue from Contracts with Customers, on a full retrospective basis and has revised the Company’s accounting policies as it relates to revenue recognition and contract costs as a result of the adoption.

Revenue recognition

Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. The Company enters into contracts that can include various combinations of subscription and support services and professional services, which are generally capable of being distinct and accounted for as separate performance obligations. The Company’s agreements do not contain any refund provisions other than in the event of the Company’s non-performance or breach.

The Company determines revenue recognition through the following steps:

•

Identification of the contract, or contracts, with a customer

•

Identification of the performance obligations in the contract

•

Determination of the transaction price

•

Allocation of the transaction price to the performance obligations in the contract

•

Recognition of revenue when, or as, the Company satisfies a performance obligation

Subscription and support revenue – Customers pay subscription and support fees for access to the Company’s SaaS platform generally for a one-year period. In more limited cases, customers may pay for up to three years in advance. Fees are based on a number of factors, including the solutions subscribed for by the customer and the number of users having access to the solutions. Subscription services, which allow customers to use hosted software over the contract period without taking possession of the software, are considered distinct performance obligations and are recognized ratably as the Company transfers control evenly over the contract period.

Subscription and support revenue also includes software and related maintenance and support fees on legacy BlackLine solutions and Runbook Company B.V. (“Runbook”) software. Software licenses for legacy BlackLine solutions and Runbook software provide the customer with a right to use the software as it exists when made available to the customer. Customers may have purchased perpetual licenses or term based licenses, which provide customers with the same functionality and differ mainly in the duration over which the customer benefits from the software.

Software licenses are bundled with software maintenance and support, and the transaction price of the contract is allocated between the software licenses and the software maintenance and support. Maintenance and support convey rights to new software and upgrades released over the contract period and provide support, tools, and training to help customers deploy and use products more efficiently. Software licenses are considered distinct performance obligations and revenue is recognized at a point in time when control of the license has transferred and the license period commences. Maintenance and support are distinct performance obligations that are satisfied over time, and revenue is recognized ratably over the contract period as customers simultaneously consume and receive benefits.

Professional services revenue – Professional services consist of implementation and consulting services to assist the Company’s customers as they deploy its solutions. These services are considered distinct performance obligations. Professional services do not result in significant customization of the subscription service. The Company applies the practical expedient to recognize professional services revenue when it has the right to invoice based on time and materials incurred.

Significant judgments – The Company’s contracts with customers often include promises to transfer multiple products and services. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. Judgment is also required to determine the stand alone selling price (“SSP”) for each distinct performance obligation. The Company typically has more than one SSP for its SaaS solutions and professional services. Additionally, management has determined that there are no third-party offerings reasonably comparable to the Company’s solutions. Therefore, the Company determines the SSPs of subscriptions to the SaaS solutions and professional services based on numerous factors including the Company’s overall pricing objectives, geography, customer size and number of users, and discounting practices. The Company uses historical maintenance renewal fees to estimate SSP for maintenance and support fees bundled with software licenses. The Company uses the residual method to estimate SSP of software licenses, because license pricing is highly variable and not sold separately from maintenance and support.

Contract balances – Timing of revenue recognition may differ from the timing of invoicing to customers. The Company records an unbilled receivable when revenue is recognized prior to invoicing, and deferred revenue when revenue is recognized subsequent to invoicing. The Company generally invoices customers annually at the beginning of each annual contract period. The Company records a receivable related to revenue recognized for multi-year agreements as it has an unconditional right to invoice and receive payment in the future related to those services.

Deferred revenue is comprised mainly of billings related to the Company’s SaaS solutions in advance of revenue being recognized. Deferred revenue also includes payments for: professional services to be performed in the future; legacy BlackLine maintenance and support; Runbook maintenance, support, license, and implementation; and other offerings for which the Company has been paid in advance and earns the revenue when the Company transfers control of the product or service.

Changes in deferred revenue for the nine months ended September 30, 2018 and 2017 were primarily due to additional billings in the periods, partially offset by revenue recognized of $96.6 million and $74.7 million, respectively, that was previously included in the deferred revenue balance at December 31, 2017 and 2016, respectively.

The transaction price is generally determined by the stated fixed fees in the contract, excluding any related sales taxes. Transaction price allocated to remaining performance obligations represents contracted revenue that has not yet been recognized (“contracted not recognized”), which includes deferred revenue and amounts that will be invoiced and recognized as revenue in future periods. Contracted not recognized revenue was $257.8 million at September 30, 2018, of which the Company expects to recognize approximately 64% over the next 12 months and the remainder thereafter.

Fees are generally due and payable upon receipt of invoice or within 30 days. None of the Company’s contracts includes a significant financing component.

Assets recognized from the costs to obtain a contract with a customer – The Company recognizes an asset for the incremental and recoverable costs of obtaining a contract with a customer if the Company expects the benefit of those costs to be one year or longer. The Company has determined that certain sales incentive programs to the Company’s employees ("deferred customer contract acquisition costs") and its partners ("partner referral fees") meet the requirements to be capitalized. Deferred customer acquisition costs related to new revenue contracts and upsells are deferred and then amortized straight line over the expected period of benefit, which the Company has determined to be five years, based upon both the product turnover rate and estimated customer life. Partner referral fees are deferred and then amortized on a straight-line basis over the related contractual period, as the fees for renewals are commensurate with fees incurred for the initial contract. Deferred customer acquisition costs and partner referral fees are included within other assets and prepaid expenses and other current assets, respectively, on the condensed consolidated balance sheets. There were no impairment losses in relation to the costs capitalized for the periods presented.

Amortization expense related to the asset recognized from the costs to obtain a contract with a customer is included in sales and marketing expenses in the condensed consolidated statements of operations and was $6.2 million and $4.1 million for the quarters ended September 30, 2018 and 2017, respectively. For the nine months ended September 30, 2018 and 2017, amortization expense related to the asset recognized from the costs to obtain a contract with a customer was $17.2 million and $11.1 million, respectively.

Recently issued accounting pronouncements not yet adopted

In February 2016, the Financial Accounting Standards Board (“FASB”) issued new guidance which significantly changes the accounting for leases. The new guidance requires that a lessee recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. For income statement purposes, the new guidance retained a dual model, requiring leases to be classified as either operating or financing. Operating leases will result in straight-line expense while finance leases will result in a front-loaded expense pattern similar to existing capital lease guidance. For statement of cash flow purposes, the new guidance also retained the existing dual method, where cash payments for operating leases are reflected in cash flows from operating activities and principal and interest payments for finance leases are reflected in cash flows from financing activities and cash flows from operating activities, respectively. The new guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. The new guidance requires the recognition and measurement of leases at the beginning of the earliest period presented using a modified retrospective approach. The use of the modified retrospective approach allows an entity to use a number of practical expedients in the application of this new guidance. Although the Company is evaluating the impact of adopting this guidance on its consolidated financial statements, the Company expects that most of its operating lease commitments will be recognized as operating lease liabilities and right-of-use assets upon adoption of the new guidance. The Company will adopt the updated accounting guidance in January 2019, and prior periods will not be adjusted. The Company expects the adoption of the new accounting guidance to have a material impact on its consolidated balance sheet.

In June 2016, the FASB issued guidance which requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. This guidance amends the accounting for credit losses for available-for-sale securities and purchased financial assets with credit deterioration. This guidance is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods. Early adoption is permitted for any interim or annual period after December 15, 2018. The Company has not determined the impact of this guidance on its consolidated financial statements.

In March 2017, the FASB issued guidance which shortens the amortization period for certain purchased callable debt securities held at a premium. Under this new guidance, an entity would shorten the amortization period of the premium to the earliest call date. This guidance is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. Early adoption is permitted, including adoption in an interim period. The Company has not determined the impact of this guidance on its consolidated financial statements.

In February 2018, the FASB issued an Accounting Standard Update (“ASU”) that provides companies with an option to reclassify stranded tax effects resulting from enactment of the Tax Cuts and Jobs Act (the "Tax Act") from accumulated other comprehensive income to retained earnings. The guidance will be effective for the Company beginning in the first quarter of 2019 with early adoption permitted and would be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the tax rate as a result of the Tax Act is recognized. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.

In June 2018, the FASB issued guidance which expands the scope of Accounting Standards Codification Topic 718, Compensation—Stock Compensation, to include share-based payments granted to non-employees in exchange for goods or services. Upon adoption, the fair value of awards granted to non-employees will be determined as of the grant date, which will be recognized over the service period. Previous guidance required the awards to be remeasured at fair value periodically when determining the related expense. ASU 2018-07 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period, and requires a modified retrospective adoption, with early adoption permitted. Upon adoption, the entity is required to measure the non-employee awards at fair value as of the adoption date. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.

In August 2018, the FASB issued guidance which aligns the accounting for implementation costs incurred in a hosting arrangement that is a service contract with the accounting for implementation costs incurred to develop or obtain internal-use software under ASC 350-40, in order to determine which costs to capitalize and recognize as an asset. The guidance will be effective for the Company for annual reporting periods, and interim periods within those years, beginning after December 15, 2019, and can be applied either prospectively to implementation costs incurred after the date of adoption or retrospectively to all arrangements. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.

In August 2018, the FASB issued guidance which modifies the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in FASB Concepts Statement, Conceptual Framework for Financial Reporting—Chapter 8: Notes to Financial Statements, including the consideration of costs and benefits. The guidance will be effective for the Company for annual reporting periods, and interim periods within those years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.

Recently adopted accounting pronouncements

In May 2014, the FASB issued guidance related to revenue from contracts with customers. Under this guidance, revenue is recognized when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company adopted the new revenue guidance effective January 1, 2018 using the full retrospective method to restate each prior reporting period presented. The Company implemented internal controls and key system functionality to enable the preparation of financial information and adoption. The most significant impact of the standard relates to the Company’s accounting for the incremental costs of obtaining a contract, such as sales commissions. Under the new revenue standard, commissions are recognized over an estimated period of benefit of five years rather than over the non-cancelable contract term. The standard also impacted the Company’s accounting for on-premise solutions which includes software license, maintenance and support fees on Runbook solutions. Under the new guidance, the Company recognizes software license revenue at the time of delivery rather than over the maintenance term. Revenue recognition related to subscription, support, and professional services fees for access to the Company’s SaaS platform is substantially unchanged. Adoption of the standard using the full retrospective method required the Company to restate certain previously reported results; see Note 3 – “Revenues” for additional information regarding the impacts to previously reported results.

In November 2016, the FASB issued guidance which requires that restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the beginning and ending total amounts shown on the statement of cash flows. The Company adopted this guidance effective January 1, 2018, and all prior periods have been restated, as required by the new standard. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

In February 2017, the FASB issued guidance which simplifies the subsequent measurement of goodwill by no longer requiring an entity to determine goodwill impairment by calculating the implied fair value of goodwill by assigning the fair value of a reporting unit to all of its assets and liabilities as if that reporting unit had been acquired in a business combination. Under this new guidance, an entity would perform its goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized would not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity would consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. Under the new guidance, an entity continues to have the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. This guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those years. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company adopted this standard effective January 1, 2018, and the adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

In May 2017, the FASB issued guidance to clarify which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. Under this guidance an entity should account for the effects of a modification unless all the following are met: 1) The fair value of the modified award is the same as the fair value of the original award immediately before the original award is modified. If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification; 2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and 3) The classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The Company adopted this standard effective January 1, 2018, and will apply this guidance to modifications of stock-based compensation arrangements, if any, after this date. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

Revenues

9 Months Ended

Sep. 30, 2018

Revenue From Contract With Customer [Abstract]

Revenues

Note 3 – Revenues

The Company adopted the new revenue standard effective January 1, 2018 using the full retrospective method to restate each prior reporting period presented.

Impacts to previously reported results

The following table presents the effect of the adoption of ASC 606 on the Company’s condensed consolidated balance sheet (unaudited):

	December 31, 2017
	As Reported			Adjustments			As Adjusted
	(in thousands)
Accounts receivable, net	$	61,589		$	329		$	61,918
Prepaid expenses and other current assets	$	19,785		$	(5,829	)	$	13,956
Total current assets	$	193,954		$	(5,500	)	$	188,454
Other assets	$	1,391		$	25,429		$	26,820
Total assets	$	440,884		$	19,929		$	460,813
Deferred revenue	$	106,903		$	(2,719	)	$	104,184
Total current liabilities	$	137,039		$	(2,719	)	$	134,320
Deferred tax liabilities, net	$	1,328		$	415		$	1,743
Deferred revenue, noncurrent	$	912		$	(444	)	$	468
Total liabilities	$	146,256		$	(2,748	)	$	143,508
Accumulated deficit	$	(125,467	)	$	22,677		$	(102,790	)
Total stockholders' equity	$	294,628		$	22,677		$	317,305
Total liabilities and stockholders' equity	$	440,884		$	19,929		$	460,813

The following table presents the effect of the adoption of ASC 606 on the Company’s condensed consolidated statement of operations (unaudited):

	Quarter Ended September 30, 2017									Nine Months Ended September 30, 2017
	As Reported			Adjustments			As Adjusted			As Reported			Adjustments			As Adjusted
	(in thousands, except per share data)
Revenues
Subscription and support	$	43,462		$	(430	)	$	43,032		$	120,757		$	(1,335	)	$	119,422
Professional services		2,409			(17	)		2,392			6,041			123			6,164
Total revenues	$	45,871		$	(447	)	$	45,424		$	126,798		$	(1,212	)	$	125,586
Cost of revenues
Subscription and support	$	8,707		$	(27	)	$	8,680		$	24,729		$	(67	)	$	24,662
Total cost of revenues	$	10,898		$	(27	)	$	10,871		$	30,505		$	(67	)	$	30,438
Gross profit	$	34,973		$	(420	)	$	34,553		$	96,293		$	(1,145	)	$	95,148
Operating expenses
Sales and marketing	$	33,375		$	(1,327	)	$	32,048		$	81,996		$	(4,136	)	$	77,860
General and administrative	$	8,920		$	—		$	8,920		$	25,809		$	(170	)	$	25,639
Total operating expenses	$	48,178		$	(1,327	)	$	46,851		$	125,645		$	(4,306	)	$	121,339
Loss from operations	$	(13,205	)	$	907		$	(12,298	)	$	(29,352	)	$	3,161		$	(26,191	)
Loss before income taxes	$	(12,930	)	$	907		$	(12,023	)	$	(32,106	)	$	3,161		$	(28,945	)
Provision for (benefit from) income taxes	$	162		$	(111	)	$	51		$	110		$	(170	)	$	(60	)
Net loss	$	(13,092	)	$	1,018		$	(12,074	)	$	(32,216	)	$	3,331		$	(28,885	)
Basic net loss per share	$	(0.25	)	$	0.02		$	(0.23	)	$	(0.62	)	$	0.06		$	(0.56	)
Diluted net loss per share	$	(0.25	)	$	0.02		$	(0.23	)	$	(0.62	)	$	0.06		$	(0.56	)

The following table presents the effect of the adoption of ASC 606 on the Company’s condensed consolidated statement of cash flows (unaudited):

	Nine Months Ended September 30, 2017
	As Reported			Adjustments			As Adjusted
	(in thousands)
Net loss	$	(32,216	)	$	3,331		$	(28,885	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred income taxes	$	(269	)	$	(151	)	$	(420	)
Prepaid expenses and other current assets	$	(1,459	)	$	135		$	(1,324	)
Other assets	$	(408	)	$	(4,215	)	$	(4,623	)
Deferred revenue	$	13,525		$	900		$	14,425

There was no effect to net cash provided by (used in) operating, investing, or financing activities.

Disaggregation of Revenues

The Company disaggregates its revenue from contracts with customers by geographic location, as it believes it best depicts how the nature, amount, timing, and uncertainty of its revenues and cash flows are affected by economic factors.

The following table sets forth the Company’s revenues by geographic region (in thousands):

	Quarter Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
			*As Adjusted				*As Adjusted
United States	$	46,782	$	36,330	$	131,456	$	101,608
International		11,952		9,094		34,016		23,978
	$	58,734	$	45,424	$	165,472	$	125,586

Balance Sheet Components

9 Months Ended

Sep. 30, 2018

Balance Sheet Components

Note 4 – Balance Sheet Components

Investments in Marketable Securities

Investments in marketable securities presented within current assets on the consolidated balance sheet consisted of the following:

	September 30, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Marketable securities
U.S. treasury securities	$	25,803	$	—	$	(48	)	$	25,755
Corporate bonds		33,490		2		(46	)		33,446
Commercial paper		27,514		—		—			27,514
	$	86,807	$	2	$	(94	)	$	86,715

	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Marketable securities
U.S. treasury securities	$	21,454	$	—	$	(19	)	$	21,435
Corporate bonds		32,437		—		(43	)		32,394
Commercial paper		25,048		—		—			25,048
Asset-backed securities		2,600		—		(1	)		2,599
	$	81,539	$	—	$	(63	)	$	81,476

During the quarters and nine months ended September 30, 2018 and 2017 there were no material realized gains or losses related to sales of marketable securities recognized in the Company’s unaudited condensed consolidated statements of operations. Net gains and losses related to maturities of marketable securities that were reclassified from accumulated other comprehensive loss to earnings in the unaudited condensed consolidated statements of operations were $0.3 million and $0.6 million for the quarter and nine months ended September 30, 2018, respectively. Net gains and losses related to maturities of marketable securities that were reclassified from accumulated other comprehensive loss to earnings in the unaudited condensed consolidated statements of operations were not material for the quarter and nine months ended September 30, 2017.

The Company’s marketable securities have a contractual maturity of less than two years. The amortized cost and fair values of marketable securities, by remaining contractual maturity, were as follows:

	September 30, 2018
	Amortized Cost		Fair Value
	(in thousands)
Maturing within 1 year	$	84,328	$	84,250
Maturing between 1 year and 2 years		2,479		2,465
	$	86,807	$	86,715

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	September 30,		December 31,
	2018		2017
Partner referral fees	$	9,080	$	7,945
Restricted cash		—	400
Other prepaid expenses and other current assets		6,899		5,611
	$	15,979	$	13,956

Other Assets

Other assets consisted of the following (in thousands):

	September 30,		December 31,
	2018		2017
Deferred customer contract acquisition costs	$	30,054	$	25,338
Restricted cash		278		—
Other assets		1,783		1,482
	$	32,115	$	26,820

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities were comprised of the following (in thousands):

	September 30,		December 31,
	2018		2017
Accrued salaries and employee benefits	$	10,927	$	11,945
Partner referral fees		3,610		2,991
Accrued income and other taxes payable		1,974		1,798
Accrued professional services costs		249		407
Short-term portion of capital lease		—		443
Short-term tenant improvement allowance		475		475
Other accrued expenses and current liabilities		2,939		2,815
	$	20,174	$	20,874

Fair Value Measurements

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 5 – Fair Value Measurements

The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis by level, within the fair value hierarchy. Financial assets and financial liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement (in thousands):

	September 30, 2018
	Level 1		Level 2		Level 3		Total
Cash equivalents
Money market funds	$	27,127	$	—	$	—	$	27,127
Marketable securities
U.S. treasury securities		25,755		—		—		25,755
Corporate bonds		—		33,446		—		33,446
Commercial paper		—		27,514		—		27,514
Total assets	$	52,882	$	60,960	$	—	$	113,842
Liabilities
Contingent consideration	$	—	$	—	$	6,153	$	6,153
Total liabilities	$	—	$	—	$	6,153	$	6,153

	December 31, 2017
	Level 1		Level 2		Level 3		Total
Cash equivalents
Money market funds	$	21,247	$	—	$	—	$	21,247
Marketable securities
U.S. treasury securities		21,435		—		—		21,435
Corporate bonds		—		32,394		—		32,394
Commercial paper		—		25,048		—		25,048
Asset-backed securities		—		2,599		—		2,599
Total assets	$	42,682	$	60,041	$	—	$	102,723
Liabilities
Contingent consideration	$	—	$	—	$	5,866	$	5,866
Total liabilities	$	—	$	—	$	5,866	$	5,866

The following table summarizes the changes in the common stock warrant liability (in thousands):

	Nine Months Ended September 30, 2017
Beginning fair value	$	11,380
Change in fair value		3,490
Exercise of stock warrants		(14,870	)
Ending fair value	$	—

In May 2017, warrants to purchase 499,999 shares of common stock were net exercised resulting in the issuance of 428,033 shares of common stock and, accordingly, there will be no further changes in the fair value.

The following table summarizes the changes in the contingent consideration liability (in thousands):

	Quarter Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Beginning fair value	$	6,056	$	5,427	$	5,866	$	5,238
Change in fair value		97		178		287		367
Ending fair value	$	6,153	$	5,605	$	6,153	$	5,605

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 6 – Commitments and Contingencies Operating leases—The Company has various non-cancelable operating leases for its corporate and international offices, as well as non-cancelable equipment leases. These office and equipment leases expire at various times through 2024. Certain lease agreements contain renewal options, rent abatement, and escalation clauses. The Company recognizes rent expense on a straight-line basis over the lease term, commencing when the Company takes possession of the property or equipment. Certain of the Company’s office leases entitle the Company to receive a tenant allowance from the landlord. The Company records tenant allowances as a deferred rent credit, which the Company amortizes on a straight-line basis, as a reduction of rent expense, over the term of the underlying lease. Contingent consideration—On September 3, 2013, BlackLine Systems, Inc. was acquired by BlackLine, Inc. (the “2013 Acquisition”). In conjunction with the 2013 Acquisition, option holders of BlackLine Systems, Inc. were allowed to cancel their stock option rights and receive a cash payment equal to the amount of calculated gain (less applicable expense and other items) had they exercised their stock options and then sold their common shares as part of the 2013 Acquisition. As a condition of the 2013 Acquisition, the Company is required to pay additional cash consideration to certain equity holders if the Company realizes a tax benefit from the use of net operating losses generated from the stock option exercises concurrent with the 2013 Acquisition. The maximum contingent cash consideration to be distributed is $8.0 million. The fair value of the contingent consideration was $6.2 million and $5.9 million at September 30, 2018 and December 31, 2017, respectively. Litigation—From time to time, the Company may become subject to legal proceedings, claims and litigation arising in the ordinary course of business. The Company is not currently a party to any legal proceedings, nor is it aware of any pending or threatened litigation, that would have a material adverse effect on the Company’s business, operating results, cash flows, or financial condition should such litigation be resolved unfavorably. Indemnification—In the ordinary course of business, the Company may provide indemnification of varying scope and terms to customers, vendors, investors, directors, and officers with respect to certain matters, including, but not limited to, losses arising out of its breach of such agreements, services to be provided by the Company, or from intellectual property infringement claims made by third parties. These indemnification provisions may survive termination of the underlying agreement and the maximum potential amount of future payments the Company could be required to make under these indemnification provisions may not be subject to maximum loss clauses. The maximum potential amount of future payments the Company could be required to make under these indemnification provisions is indeterminable. The Company has never paid a material claim, nor has it been sued in connection with these indemnification arrangements. At September 30, 2018 and December 31, 2017, the Company has not accrued a liability for these indemnification arrangements because the likelihood of incurring a payment obligation, if any, in connection with these indemnification arrangements is not probable or reasonably estimable.

Equity Awards

9 Months Ended

Sep. 30, 2018

Equity Awards

Note 7 – Equity Awards

Stock-based compensation expense

Stock-based compensation expense recorded in the Company’s unaudited condensed consolidated statements of operations was as follows (in thousands):

	Quarter Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Cost of revenues	$	869	$	334	$	2,389	$	855
Sales and marketing		2,182		7,761		5,927		9,169
Research and development		651		236		1,755		534
General and administrative		1,638		784		4,636		2,393
	$	5,340	$	9,115	$	14,707	$	12,951

For the quarters ended September 30, 2018 and 2017, stock-based compensation capitalized as an asset was $0.1 million and $33,000, respectively. For the nine months ended September 30, 2018 and 2017, stock-based compensation capitalized as an asset was $0.3 million and $0.1 million, respectively. On July 21, 2017, the Company modified the vesting terms of options for certain Australian employees to purchase 219,000 shares of common stock to a time-based vesting schedule. Prior to the modification, the options vested solely upon a change in control of the Company. The Company recorded $5.8 million of stock-based compensation in the quarter ended September 30, 2017 relating to this modification. In addition, the Company recorded an additional $1.1 million related to the modification of an award in connection with the termination of an employee in the quarter ended September 30, 2017.

Restricted stock units

The following table summarizes activity for restricted stock units (in thousands):

Nonvested at December 31, 2017	2
Granted	1,255
Vested	(2	)
Forfeited/canceled	(53	)
Nonvested at September 30, 2018	1,202

Stock options

The following table summarizes activity for awards that contain service-only vesting conditions (in thousands):

Outstanding at December 31, 2017	5,019
Granted	728
Exercised	(1,747	)
Forfeited/canceled	(228	)
Outstanding at September 30, 2018	3,772

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 8 – Income Taxes In determining quarterly provisions for income taxes, the Company uses the annual estimated effective tax rate applied to the actual year-to-date loss, adjusted for discrete items arising in that quarter. The Company’s annual estimated effective tax rate differs from the U.S. federal statutory rate of 21% primarily as a result of state taxes, foreign taxes, and changes in the Company’s valuation allowance for domestic income taxes. For the quarters ended September 30, 2018 and 2017, the Company recorded $17,000 and $0.1 million, respectively, in income tax expense. The decrease in the income tax expense for the quarter ended September 30, 2018, compared to the quarter ended September 30, 2017, was related to a reduction in net operating losses and an increase in tax liabilities in the Company’s foreign jurisdictions for the current period. For the quarter ended September 30, 2018, the Company maintained a full valuation allowance on its U.S. federal and state net deferred tax assets as it was more likely than not that those deferred tax assets will not be realized. For the nine months ended September 30, 2018 and 2017, the Company recorded $0.1 million in income tax expense and $0.1 million in income tax benefits, respectively. The increase in the income tax expense for the nine months ended September 30, 2018, compared to the nine months ended September 30, 2017, was related to a reduction in net operating losses and an increase in tax liabilities in the Company’s foreign jurisdictions for the current period. For the nine months ended September 30, 2018, the Company maintained a full valuation allowance on its U.S. federal and state net deferred tax assets as it was more likely than not that those deferred tax assets will not be realized.

Net Loss per Share

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Net Loss per Share

Note 9 – Net Loss per Share

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share amounts):

	Quarter Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Numerator:
Net loss	$	(4,460	)	$	(12,074	)	$	(20,072	)	$	(28,885	)
Denominator:
Weighted average shares		54,263			52,592			53,660			51,910
Add: Dilutive effect of securities		—			—			—			—
Shares used to calculate diluted net loss per share		54,263			52,592			53,660			51,910
Basic net loss per share	$	(0.08	)	$	(0.23	)	$	(0.37	)	$	(0.56	)
Diluted net loss per share	$	(0.08	)	$	(0.23	)	$	(0.37	)	$	(0.56	)

The following potentially dilutive shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because they were anti-dilutive (in thousands):

	September 30,
	2018		2017
Stock options with service-only vesting conditions		3,772		4,921
Stock options with performance conditions		683		683
Restricted stock units		1,202		—
Total shares excluded from net loss per share		5,657		5,604

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 10 – Subsequent Events In September 2018, the Company entered into an agreement with Japanese Cloud Computing and M30 LLC to engage in the investment, organization, management, and operation of a Japanese subsidiary (BlackLine K.K.) of the Company that is focused on the sale of the Company's products in Japan. In October 2018, the Company initially contributed approximately $4.5 million in cash in exchange for 51% of the outstanding common stock of BlackLine K.K. As the Company controls a majority stake in BlackLine K.K., the entity will be consolidated. On October 31, 2018, BlackLine Systems, Inc. (“BlackLine Systems”), a wholly-owned subsidiary of the Company, entered into an Amendment (the “Amendment”) to the Software Development Cooperation Agreement (the “SAP Agreement”), dated October 1, 2013, with SAP SE (as successor to SAP AG) (“SAP”). The Company has a strategic relationship with SAP to market its solution to users of SAP’s ERP solutions. As part of this strategic relationship, BlackLine Systems previously agreed under the terms of the SAP Agreement to pay SAP a fee based on a percentage of revenues from BlackLine Systems’ customers that use an SAP ERP system over the term of their subscription agreements (the “License Royalties”). Under the terms of the Amendment, effective October 1, 2018, BlackLine Systems will no longer be obligated to pay the License Royalties to SAP. Concurrently with the Amendment, the Company entered into a reseller agreement (the “Reseller Agreement”) with SAP. Under the terms of the Reseller Agreement, SAP will become part of the reseller channel that the Company uses in the ordinary course of business to extend the use of its platform and will have the ability to resell the Company’s accounting solutions, for which the Company will receive a percentage of the revenues. On November 6, 2018, the Compensation Committee of the Board of Directors of BlackLine, Inc. approved stock option grants to employees totaling 0.1 million shares. Each stock option entitles the recipient to receive one share of common stock upon exercise of the vested award and payment of the exercise price. On November 6, 2018, the Compensation Committee of the Board of Directors of BlackLine, Inc. approved restricted stock unit grants to employees totaling 0.1 million shares. Each restricted stock unit entitles the recipient to receive one share of common stock upon vesting of the award.

Basis of Presentation, Significant Accounting Policies and Recently-Issued Accounting Pronouncements (Policies)

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Use of Estimates

Use of estimates

Reclassifications

Revenue Recognition

Revenue recognition

The Company determines revenue recognition through the following steps:

•

Identification of the contract, or contracts, with a customer

•

Identification of the performance obligations in the contract

•

Determination of the transaction price

•

Allocation of the transaction price to the performance obligations in the contract

•

Recognition of revenue when, or as, the Company satisfies a performance obligation

Fees are generally due and payable upon receipt of invoice or within 30 days. None of the Company’s contracts includes a significant financing component.

Recently Issued Accounting Pronouncements Not Yet Adopted

Recently issued accounting pronouncements not yet adopted

Recently Adopted Accounting Pronouncements

Recently adopted accounting pronouncements

Revenues (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Disaggregation of Revenues by Geographic Region

The following table sets forth the Company’s revenues by geographic region (in thousands):

	Quarter Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
			*As Adjusted				*As Adjusted
United States	$	46,782	$	36,330	$	131,456	$	101,608
International		11,952		9,094		34,016		23,978
	$	58,734	$	45,424	$	165,472	$	125,586

Adoption of ASC 606

Effect of Adoption of ASC 606 on Impacts to Previously Reported Results

Impacts to previously reported results

The following table presents the effect of the adoption of ASC 606 on the Company’s condensed consolidated balance sheet (unaudited):

	December 31, 2017
	As Reported			Adjustments			As Adjusted
	(in thousands)
Accounts receivable, net	$	61,589		$	329		$	61,918
Prepaid expenses and other current assets	$	19,785		$	(5,829	)	$	13,956
Total current assets	$	193,954		$	(5,500	)	$	188,454
Other assets	$	1,391		$	25,429		$	26,820
Total assets	$	440,884		$	19,929		$	460,813
Deferred revenue	$	106,903		$	(2,719	)	$	104,184
Total current liabilities	$	137,039		$	(2,719	)	$	134,320
Deferred tax liabilities, net	$	1,328		$	415		$	1,743
Deferred revenue, noncurrent	$	912		$	(444	)	$	468
Total liabilities	$	146,256		$	(2,748	)	$	143,508
Accumulated deficit	$	(125,467	)	$	22,677		$	(102,790	)
Total stockholders' equity	$	294,628		$	22,677		$	317,305
Total liabilities and stockholders' equity	$	440,884		$	19,929		$	460,813

The following table presents the effect of the adoption of ASC 606 on the Company’s condensed consolidated statement of operations (unaudited):

	Quarter Ended September 30, 2017									Nine Months Ended September 30, 2017
	As Reported			Adjustments			As Adjusted			As Reported			Adjustments			As Adjusted
	(in thousands, except per share data)
Revenues
Subscription and support	$	43,462		$	(430	)	$	43,032		$	120,757		$	(1,335	)	$	119,422
Professional services		2,409			(17	)		2,392			6,041			123			6,164
Total revenues	$	45,871		$	(447	)	$	45,424		$	126,798		$	(1,212	)	$	125,586
Cost of revenues
Subscription and support	$	8,707		$	(27	)	$	8,680		$	24,729		$	(67	)	$	24,662
Total cost of revenues	$	10,898		$	(27	)	$	10,871		$	30,505		$	(67	)	$	30,438
Gross profit	$	34,973		$	(420	)	$	34,553		$	96,293		$	(1,145	)	$	95,148
Operating expenses
Sales and marketing	$	33,375		$	(1,327	)	$	32,048		$	81,996		$	(4,136	)	$	77,860
General and administrative	$	8,920		$	—		$	8,920		$	25,809		$	(170	)	$	25,639
Total operating expenses	$	48,178		$	(1,327	)	$	46,851		$	125,645		$	(4,306	)	$	121,339
Loss from operations	$	(13,205	)	$	907		$	(12,298	)	$	(29,352	)	$	3,161		$	(26,191	)
Loss before income taxes	$	(12,930	)	$	907		$	(12,023	)	$	(32,106	)	$	3,161		$	(28,945	)
Provision for (benefit from) income taxes	$	162		$	(111	)	$	51		$	110		$	(170	)	$	(60	)
Net loss	$	(13,092	)	$	1,018		$	(12,074	)	$	(32,216	)	$	3,331		$	(28,885	)
Basic net loss per share	$	(0.25	)	$	0.02		$	(0.23	)	$	(0.62	)	$	0.06		$	(0.56	)
Diluted net loss per share	$	(0.25	)	$	0.02		$	(0.23	)	$	(0.62	)	$	0.06		$	(0.56	)

The following table presents the effect of the adoption of ASC 606 on the Company’s condensed consolidated statement of cash flows (unaudited):

	Nine Months Ended September 30, 2017
	As Reported			Adjustments			As Adjusted
	(in thousands)
Net loss	$	(32,216	)	$	3,331		$	(28,885	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred income taxes	$	(269	)	$	(151	)	$	(420	)
Prepaid expenses and other current assets	$	(1,459	)	$	135		$	(1,324	)
Other assets	$	(408	)	$	(4,215	)	$	(4,623	)
Deferred revenue	$	13,525		$	900		$	14,425

Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Investments in Marketable Securities

Investments in marketable securities presented within current assets on the consolidated balance sheet consisted of the following:

	September 30, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Marketable securities
U.S. treasury securities	$	25,803	$	—	$	(48	)	$	25,755
Corporate bonds		33,490		2		(46	)		33,446
Commercial paper		27,514		—		—			27,514
	$	86,807	$	2	$	(94	)	$	86,715

	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Marketable securities
U.S. treasury securities	$	21,454	$	—	$	(19	)	$	21,435
Corporate bonds		32,437		—		(43	)		32,394
Commercial paper		25,048		—		—			25,048
Asset-backed securities		2,600		—		(1	)		2,599
	$	81,539	$	—	$	(63	)	$	81,476

Summary of Amortized Cost and Fair Values of Marketable Securities, by Remaining Contractual Maturity

The amortized cost and fair values of marketable securities, by remaining contractual maturity, were as follows:

	September 30, 2018
	Amortized Cost		Fair Value
	(in thousands)
Maturing within 1 year	$	84,328	$	84,250
Maturing between 1 year and 2 years		2,479		2,465
	$	86,807	$	86,715

Summary of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	September 30,		December 31,
	2018		2017
Partner referral fees	$	9,080	$	7,945
Restricted cash		—	400
Other prepaid expenses and other current assets		6,899		5,611
	$	15,979	$	13,956

Schedule of Other Assets

Other assets consisted of the following (in thousands):

	September 30,		December 31,
	2018		2017
Deferred customer contract acquisition costs	$	30,054	$	25,338
Restricted cash		278		—
Other assets		1,783		1,482
	$	32,115	$	26,820

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities were comprised of the following (in thousands):

	September 30,		December 31,
	2018		2017
Accrued salaries and employee benefits	$	10,927	$	11,945
Partner referral fees		3,610		2,991
Accrued income and other taxes payable		1,974		1,798
Accrued professional services costs		249		407
Short-term portion of capital lease		—		443
Short-term tenant improvement allowance		475		475
Other accrued expenses and current liabilities		2,939		2,815
	$	20,174	$	20,874

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

	September 30, 2018
	Level 1		Level 2		Level 3		Total
Cash equivalents
Money market funds	$	27,127	$	—	$	—	$	27,127
Marketable securities
U.S. treasury securities		25,755		—		—		25,755
Corporate bonds		—		33,446		—		33,446
Commercial paper		—		27,514		—		27,514
Total assets	$	52,882	$	60,960	$	—	$	113,842
Liabilities
Contingent consideration	$	—	$	—	$	6,153	$	6,153
Total liabilities	$	—	$	—	$	6,153	$	6,153

	December 31, 2017
	Level 1		Level 2		Level 3		Total
Cash equivalents
Money market funds	$	21,247	$	—	$	—	$	21,247
Marketable securities
U.S. treasury securities		21,435		—		—		21,435
Corporate bonds		—		32,394		—		32,394
Commercial paper		—		25,048		—		25,048
Asset-backed securities		—		2,599		—		2,599
Total assets	$	42,682	$	60,041	$	—	$	102,723
Liabilities
Contingent consideration	$	—	$	—	$	5,866	$	5,866
Total liabilities	$	—	$	—	$	5,866	$	5,866

Common Stock Warrant Liability

Summary of Changes in Common Stock Warrant Liability and Contingent Consideration Liability

The following table summarizes the changes in the common stock warrant liability (in thousands):

	Nine Months Ended September 30, 2017
Beginning fair value	$	11,380
Change in fair value		3,490
Exercise of stock warrants		(14,870	)
Ending fair value	$	—

Contingent Consideration

Summary of Changes in Common Stock Warrant Liability and Contingent Consideration Liability

The following table summarizes the changes in the contingent consideration liability (in thousands):

	Quarter Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Beginning fair value	$	6,056	$	5,427	$	5,866	$	5,238
Change in fair value		97		178		287		367
Ending fair value	$	6,153	$	5,605	$	6,153	$	5,605

Equity Awards (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock-Based Compensation Expense

Stock-based compensation expense recorded in the Company’s unaudited condensed consolidated statements of operations was as follows (in thousands):

	Quarter Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Cost of revenues	$	869	$	334	$	2,389	$	855
Sales and marketing		2,182		7,761		5,927		9,169
Research and development		651		236		1,755		534
General and administrative		1,638		784		4,636		2,393
	$	5,340	$	9,115	$	14,707	$	12,951

Summary of Restricted Stock Units Activity

The following table summarizes activity for restricted stock units (in thousands):

Nonvested at December 31, 2017	2
Granted	1,255
Vested	(2	)
Forfeited/canceled	(53	)
Nonvested at September 30, 2018	1,202

Summary of Stock Options Activity

The following table summarizes activity for awards that contain service-only vesting conditions (in thousands):

Outstanding at December 31, 2017	5,019
Granted	728
Exercised	(1,747	)
Forfeited/canceled	(228	)
Outstanding at September 30, 2018	3,772

Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Loss per Share

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share amounts):

	Quarter Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Numerator:
Net loss	$	(4,460	)	$	(12,074	)	$	(20,072	)	$	(28,885	)
Denominator:
Weighted average shares		54,263			52,592			53,660			51,910
Add: Dilutive effect of securities		—			—			—			—
Shares used to calculate diluted net loss per share		54,263			52,592			53,660			51,910
Basic net loss per share	$	(0.08	)	$	(0.23	)	$	(0.37	)	$	(0.56	)
Diluted net loss per share	$	(0.08	)	$	(0.23	)	$	(0.37	)	$	(0.56	)

Schedule of Potentially Dilutive Shares Excluded From Calculation of Diluted Net Loss Per Share Attributable to Common Stockholders

The following potentially dilutive shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because they were anti-dilutive (in thousands):

	September 30,
	2018		2017
Stock options with service-only vesting conditions		3,772		4,921
Stock options with performance conditions		683		683
Restricted stock units		1,202		—
Total shares excluded from net loss per share		5,657		5,604

Basis of Presentation, Significant Accounting Policies and Recently-Issued Accounting Pronouncements - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Subscription fees payable, description			Customers pay subscription and support fees for access to the Company’s SaaS platform generally for a one-year period. In more limited cases, customers may pay for up to three years in advance. Fees are based on a number of factors, including the solutions subscribed for by the customer and the number of users having access to the solutions.
SaaS platform subscription fee, period			1 year
SaaS platform subscription fee, maximum advance period			3 years
Deferred revenue recognized			$ 96,600,000	$ 74,700,000
Contracted not recognized revenue	$ 257,800,000		$ 257,800,000
Contracted not recognized revenue, expects to recognize revenue over next 12 months	64.00%		64.00%
Contract capitalized cost, amortized method			straight line
Impairment losses in relation to costs capitalized			$ 0
New Accounting Pronouncement Revenue from Contracts
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated benefit period of contract costs			5 years
Sales and Marketing Expenses
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Amortization expense	$ 6,200,000	$ 4,100,000	$ 17,200,000	$ 11,100,000

Revenues - Effect of Adoption of ASC 606 on Impacts to Previously Reported Results - Condensed Consolidated Balance Sheet (Unaudited) (Details) - USD ($)
$ in Thousands

Sep. 30, 2018

Dec. 31, 2017

Condensed Balance Sheet Statements Captions [Line Items]

$ 63,398

$ 61,918

^[1]

15,979

13,956

^[1]

Total current assets

204,493

188,454

^[1]

32,115

26,820

^[1]

Total assets

474,694

460,813

^[1]

118,260

104,184

^[1]

143,344

134,320

^[1]

1,300

1,743

^[1]

317

468

^[1]

152,261

143,508

^[1]

(122,862)

(102,790)

^[1]

322,433

317,305

^[1]

Adoption of ASC 606 | As Reported

$ 474,694

460,813

^[1]

Condensed Balance Sheet Statements Captions [Line Items]

61,589

19,785

193,954

1,391

440,884

106,903

137,039

1,328

912

146,256

(125,467)

294,628

Adoption of ASC 606 | Adjustments

440,884

Condensed Balance Sheet Statements Captions [Line Items]

329

(5,829)

(5,500)

25,429

19,929

(2,719)

(2,719)

415

(444)

(2,748)

22,677

22,677

$ 19,929

[1]	See Note 3 for a summary of adjustments.

Revenues - Effect of Adoption of ASC 606 on Impacts to Previously Reported Results - Condensed Consolidated Statement of Operations (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

Sep. 30, 2018

Sep. 30, 2017

Revenues

$ 58,734

$ 45,424

^[1]

$ 165,472

$ 125,586

^[1]

13,517

10,871

^[1]

36,989

30,438

^[1]

45,217

34,553

^[1]

128,483

95,148

^[1]

31,709

32,048

^[1]

93,086

77,860

^[1]

11,268

8,920

^[1]

34,808

25,639

^[1]

50,238

46,851

^[1]

149,895

121,339

^[1]

(5,021)

(12,298)

^[1]

(21,412)

(26,191)

^[1]

(4,443)

(12,023)

^[1]

(19,942)

(28,945)

^[1]

^[1]

130

(60)

^[1]

$ (4,460)

$ (12,074)

^[1]

$ (20,072)

$ (28,885)

^[1]

$ (0.08)

$ (0.23)

^[1]

$ (0.37)

$ (0.56)

^[1]

$ (0.08)

$ (0.23)

^[1]

$ (0.37)

$ (0.56)

^[1]

Subscription and Support

Revenues

$ 56,170

$ 43,032

^[1]

$ 157,842

$ 119,422

^[1]

11,174

8,680

^[1]

30,048

24,662

^[1]

Professional Services

Revenues

2,564

2,392

^[1]

7,630

6,164

^[1]

Adoption of ASC 606 | As Reported

$ 2,343

2,191

^[1]

$ 6,941

5,776

^[1]

Revenues

45,871

126,798

10,898

30,505

34,973

96,293

33,375

81,996

8,920

25,809

48,178

125,645

(13,205)

(29,352)

(12,930)

(32,106)

162

110

$ (13,092)

$ (32,216)

$ (0.25)

$ (0.62)

Adoption of ASC 606 | Adjustments

$ (0.25)

$ (0.62)

Revenues

$ (447)

$ (1,212)

(27)

(67)

(420)

(1,145)

(1,327)

(4,136)

(170)

(1,327)

(4,306)

907

3,161

907

3,161

(111)

(170)

$ 1,018

$ 3,331

$ 0.02

$ 0.06

Adoption of ASC 606 | Subscription and Support | As Reported

$ 0.02

$ 0.06

Revenues

$ 43,462

$ 120,757

Adoption of ASC 606 | Subscription and Support | Adjustments

8,707

24,729

Revenues

(430)

(1,335)

Adoption of ASC 606 | Professional Services | As Reported

(27)

(67)

Revenues

Adoption of ASC 606 | Professional Services | Adjustments

2,409

6,041

Revenues

Condensed Cash Flow Statements Captions [Line Items]

$ (17)

$ 123

[1]	See Note 3 for a summary of adjustments.

Revenues - Effect of Adoption of ASC 606 on Impacts to Previously Reported Results - Condensed Consolidated Statement of Cash Flows (Unaudited) (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

Sep. 30, 2018

Sep. 30, 2017

Adjustments to reconcile net loss to net cash provided by (used in) operating activities:

$ (4,460)

$ (12,074)

^[1]

$ (20,072)

$ (28,885)

^[1]

(443)

(420)

^[1]

(2,392)

(1,324)

^[1]

(5,017)

(4,623)

^[1]

Adoption of ASC 606 | As Reported

$ 13,925

14,425

^[1]

Condensed Cash Flow Statements Captions [Line Items]

Adjustments to reconcile net loss to net cash provided by (used in) operating activities:

(13,092)

(32,216)

(269)

(1,459)

(408)

Adoption of ASC 606 | Adjustments

13,525

Condensed Cash Flow Statements Captions [Line Items]

Adjustments to reconcile net loss to net cash provided by (used in) operating activities:

$ 1,018

3,331

(151)

135

(4,215)

Disaggregation Of Revenue [Line Items]

$ 900

[1]	See Note 3 for a summary of adjustments.

Revenues - Schedule of Disaggregation of Revenues by Geographic Region (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

Sep. 30, 2018

Sep. 30, 2017

Disaggregation Of Revenue [Line Items]

$ 58,734

$ 45,424

^[1]

$ 165,472

$ 125,586

^[1]

United States

Disaggregation Of Revenue [Line Items]

46,782

36,330

131,456

101,608

International

Schedule Of Available For Sale Securities [Line Items]

$ 11,952

$ 9,094

$ 34,016

$ 23,978

[1]	See Note 3 for a summary of adjustments.

Balance Sheet Components - Schedule of Investments in Marketable Securities (Details) - USD ($)
$ in Thousands

Sep. 30, 2018

Dec. 31, 2017

$ 86,807

$ 81,539

Gross Unrealized Gains

(94)

(63)

Schedule Of Available For Sale Securities [Line Items]

86,715

81,476

^[1]

U.S. treasury securities

25,803

21,454

(48)

(19)

Schedule Of Available For Sale Securities [Line Items]

25,755

21,435

Corporate bonds

33,490

32,437

Gross Unrealized Gains

(46)

(43)

Schedule Of Available For Sale Securities [Line Items]

33,446

32,394

Commercial paper

27,514

25,048

Schedule Of Available For Sale Securities [Line Items]

$ 27,514

25,048

Asset-backed securities

2,600

(1)

$ 2,599

[1]	See Note 3 for a summary of adjustments.

Balance Sheet Components - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule Of Available For Sale Securities [Line Items]
Realized gain and losses recognized	$ 0	$ 0	$ 0	$ 0
Net gains and losses on maturities of marketable securities reclassified from accumulated other comprehensive loss to earnings	$ 300,000		$ 600,000
Maximum
Schedule Of Available For Sale Securities [Line Items]
Marketable securities contractual maturity period			2 years

Balance Sheet Components - Summary of Amortized Cost and Fair Values of Marketable Securities, by Remaining Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Maturing within 1 year	$ 84,328
Maturing between 1 year and 2 years	2,479
Amortized Cost	86,807	$ 81,539
Maturing within 1 year	84,250
Maturing between 1 year and 2 years	2,465
Total, Fair Value	$ 86,715

Balance Sheet Components - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands

Sep. 30, 2018

Dec. 31, 2017

Other prepaid expenses and other current assets

Partner referral fees

$ 9,080

$ 7,945

Restricted cash

400

6,899

5,611

Prepaid expenses and other current assets, Total

$ 15,979

$ 13,956

^[1]

[1]	See Note 3 for a summary of adjustments.

Balance Sheet Components - Summary of Other Assets (Details) - USD ($)
$ in Thousands

Sep. 30, 2018

Dec. 31, 2017

Sep. 30, 2017

^[1]

Deferred customer contract acquisition costs

$ 30,054

$ 25,338

Restricted cash

278

$ 400

Accrued salaries and employee benefits

1,783

1,482

Other Assets Noncurrent

$ 32,115

$ 26,820

^[1]

[1]	See Note 3 for a summary of adjustments.

Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands

Sep. 30, 2018

Dec. 31, 2017

Payables And Accruals [Abstract]

$ 10,927

$ 11,945

Partner referral fees

3,610

2,991

Accrued income and other taxes payable

1,974

1,798

Accrued professional services costs

249

407

Short-term portion of capital lease

443

Short-term tenant improvement allowance

475

Other accrued expenses and current liabilities

2,939

2,815

Accrued expenses and other current liabilities

$ 20,174

$ 20,874

^[1]

[1]	See Note 3 for a summary of adjustments.

Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	$ 113,842	$ 102,723
Liabilities
Contingent consideration	6,153	5,866
Total liabilities	6,153	5,866
Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	27,127	21,247
U.S. treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	25,755	21,435
Corporate bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	33,446	32,394
Commercial paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	27,514	25,048
Asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities		2,599
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	52,882	42,682
Level 1 \| Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	27,127	21,247
Level 1 \| U.S. treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	25,755	21,435
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	60,960	60,041
Level 2 \| Corporate bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	33,446	32,394
Level 2 \| Commercial paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	27,514	25,048
Level 2 \| Asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities		2,599
Level 3
Liabilities
Contingent consideration	6,153	5,866
Total liabilities	$ 6,153	$ 5,866

Fair Value Measurements - Summary of Changes in Common Stock Warrant Liability (Details) - Common Stock Warrant Liability $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Beginning fair value	$ 11,380
Change in fair value	3,490
Exercise of stock warrants	$ (14,870)

Fair Value Measurements - Additional Information (Details) - Common Stock	1 Months Ended
	May 31, 2017 shares
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrants to purchase of common stock	499,999
Issuance of common stock	428,033

Fair Value Measurements - Summary of Changes in Contingent Consideration Liability (Details) - Contingent Consideration - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Beginning fair value	$ 6,056	$ 5,427	$ 5,866	$ 5,238
Change in fair value	97	178	287	367
Ending fair value	$ 6,153	$ 5,605	$ 6,153	$ 5,605

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions		9 Months Ended
	Sep. 03, 2013	Sep. 30, 2018	Dec. 31, 2017
Business Acquisition Contingent Consideration [Line Items]
Lease expiration year		2024
BlackLine Systems, Inc.
Business Acquisition Contingent Consideration [Line Items]
Maximum contingent cash consideration to be distributed	$ 8.0
BlackLine Systems, Inc. \| Contingent Consideration
Business Acquisition Contingent Consideration [Line Items]
Fair value of contingent consideration		$ 6.2	$ 5.9

Equity Awards - Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 5,340	$ 9,115	$ 14,707	$ 12,951
Cost of Revenues
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	869	334	2,389	855
Sales and Marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,182	7,761	5,927	9,169
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	651	236	1,755	534
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 1,638	$ 784	$ 4,636	$ 2,393

Equity Awards - Additional Information (Details) - USD ($)

3 Months Ended

9 Months Ended

Jul. 21, 2017

Sep. 30, 2018

Sep. 30, 2017

Sep. 30, 2018

Sep. 30, 2017

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Stock options granted to purchase shares of common stock for employee

219,000

728,000

Stock-based compensation

$ 5,800,000

$ 14,707,000

$ 12,951,000

^[1]

Australia

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Stock-based compensation capitalized as an asset

$ 100,000

33,000

$ 300,000

$ 100,000

Termination of an Employee

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Additional stock-based compensation relating to the modification of an award

$ 1,100,000

[1]	See Note 3 for a summary of adjustments.

Equity Awards - Summary of Restricted Stock Units Activity (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2018 shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Restricted stock units, Nonvested, Beginning balance	2
Restricted stock units, Granted	1,255
Restricted stock units, Vested	(2)
Restricted stock units, Forfeited/canceled	(53)
Restricted stock units, Nonvested, Ending balance	1,202

Equity Awards - Summary of Stock Options Activity (Details) - shares		9 Months Ended
	Jul. 21, 2017	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, Beginning balance		5,019,000
Granted	219,000	728,000
Exercised		(1,747,000)
Forfeited/canceled		(228,000)
Outstanding, Ending balance		3,772,000

Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

^[1]

Sep. 30, 2018

Sep. 30, 2017

^[1]

Income Tax Disclosure [Abstract]

U.S. Federal statutory rate

21.00%

Income tax expense (benefit)

$ 17

$ 51

$ 130

$ (60)

[1]	See Note 3 for a summary of adjustments.

Net Loss per Share - Schedule of Basic and Diluted Loss per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

^[1]

Sep. 30, 2018

Sep. 30, 2017

^[1]

Numerator:

Shares used to calculate diluted net loss per share

$ (4,460)

$ (12,074)

$ (20,072)

$ (28,885)

Denominator:

Weighted average shares

54,263

52,592

53,660

51,910

54,263

52,592

53,660

51,910

$ (0.08)

$ (0.23)

$ (0.37)

$ (0.56)

$ (0.08)

$ (0.23)

$ (0.37)

$ (0.56)

[1]	See Note 3 for a summary of adjustments.

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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+ Details

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.