10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2019

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission file number 001-35108

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 SERVICESOURCE INTERNATIONAL, INC.

(Exact name of registrant as specified in our charter)

Delaware		81-0578975
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
707 17th Street,	25th Floor	80202
Denver,	Colorado
(Address of principal executive offices)		(Zip Code)

(720)	889-8500
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Common Stock, $0.0001 Par Value	SREV	The Nasdaq Stock Market LLC
(Title of each class)	(Trading Symbol)	(Name of each exchange on which registered)

—————————————————

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes ☒   No  ☐

Indicate by check mark whether the registrant has submitted electronically on its corporate Web site, if any, every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes ☒   No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.    ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☒

As of July 31, 2019, 94,082,381 shares of common stock of ServiceSource International, Inc. were outstanding.

SERVICESOURCE INTERNATIONAL, INC.

Form 10-Q

INDEX

 

	Page
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (unaudited)	3
Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018	3
Consolidated Statements of Operations for the three and six months ended June 30, 2019 and 2018	4
Consolidated Statements of Comprehensive Loss for the three and six months ended June 30, 2019 and 2018	5
Consolidated Statements of Stockholders’ Equity for the three and six months ended June 30, 2019 and 2018	6
Consolidated Statements of Cash Flows for the six months ended June 30, 2019 and 2018	7
Notes to Consolidated Financial Statements	8
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3. Quantitative and Qualitative Disclosures About Market Risk	25
Item 4. Controls and Procedures	25
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	27
Item 1A. Risk Factors	27
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	27
Item 3. Defaults Upon Senior Securities	27
Item 4. Mine Safety Disclosures	27
Item 5. Other Information	27
Item 6. Exhibits	27

2

ServiceSource International, Inc.
Consolidated Balance Sheets
(in thousands, except per share amounts)
(unaudited)
	June 30, 2019			December 31, 2018
Assets
Current assets:
Cash and cash equivalents	$	25,652		$	26,535
Accounts receivable, net	42,933			54,284
Prepaid expenses and other	6,704			5,653
Total current assets	75,289			86,472
Property and equipment, net	37,029			36,593
Contract acquisition costs	2,041			2,660
Right-of-use assets	33,190			—
Goodwill	6,334			6,334
Other assets	4,801			4,521
Total assets	$	158,684		$	136,580
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	2,096		$	2,424
Accrued expenses	2,673			3,380
Accrued compensation and benefits	14,735			15,509
Operating lease liabilities	8,419			—
Other current liabilities	5,690			6,894
Total current liabilities	33,613			28,207
Operating lease liabilities, net of current portion	28,684			—
Other long-term liabilities	3,537			6,540
Total liabilities	65,834			34,747
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $0.001 par value; 20,000 shares authorized and none issued and outstanding	—			—
Common stock; $0.0001 par value; 1,000,000 shares authorized; 94,210 shares issued and 94,089 shares outstanding as of June 30, 2019; 92,895 shares issued and 92,774 shares outstanding as of December 31, 2018	9			9
Treasury stock	(441		)	(441		)
Additional paid-in capital	372,201			369,246
Accumulated deficit	(279,137		)	(267,383		)
Accumulated other comprehensive income	218			402
Total stockholders’ equity	92,850			101,833
Total liabilities and stockholders’ equity	$	158,684		$	136,580

The accompanying notes are an integral part of these Consolidated Financial Statements.

3

ServiceSource International, Inc.
Consolidated Statements of Operations
(in thousands, except per share amounts)
(unaudited)
	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2019			2018			2019			2018
Net revenue	$	52,358		$	61,111		$	107,869		$	119,696
Cost of revenue	38,349			42,463			77,825			84,187
Gross profit	14,009			18,648			30,044			35,509
Operating expenses:
Sales and marketing	7,486			9,252			15,435			18,490
Research and development	1,274			1,780			2,537			3,296
General and administrative	10,970			13,157			21,952			26,046
Restructuring and other related costs	148			156			1,206			209
Total operating expenses	19,878			24,345			41,130			48,041
Loss from operations	(5,869		)	(5,697		)	(11,086		)	(12,532		)
Interest and other expense, net	(58		)	(2,776		)	(548		)	(5,622		)
Impairment loss on investment securities	—			—			—			(1,958		)
Loss before income taxes	(5,927		)	(8,473		)	(11,634		)	(20,112		)
Provision for income tax expense	(108		)	(414		)	(120		)	(427		)
Net loss	$	(6,035	)	$	(8,887	)	$	(11,754	)	$	(20,539	)
Net loss per common share
Basic and diluted	$	(0.06	)	$	(0.10	)	$	(0.13	)	$	(0.23	)
Weighted-average common shares outstanding:
Basic and diluted	93,712			91,323			93,315			90,843

The accompanying notes are an integral part of these Consolidated Financial Statements.

4

ServiceSource International, Inc.
Consolidated Statements of Comprehensive Loss
(in thousands)
(unaudited)
	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2019			2018			2019			2018
Net loss	$	(6,035	)	$	(8,887	)	$	(11,754	)	$	(20,539	)
Other comprehensive (loss) income
Available for sale securities:
Unrealized gain (loss) on short-term investments	—			5			—			(700		)
Reclassification adjustment for impairment loss included in net loss	—			—			—			1,958
Net change in available for sale debt securities	—			5			—			1,258
Foreign currency translation adjustments	(260		)	(210		)	(184		)	64
Other comprehensive (loss) income	(260		)	(205		)	(184		)	1,322
Comprehensive loss	$	(6,295	)	$	(9,092	)	$	(11,938	)	$	(19,217	)

The accompanying notes are an integral part of these Consolidated Financial Statements.

5

ServiceSource International, Inc.
Consolidated Statements of Stockholders' Equity
(in thousands)
(unaudited)
	Common Stock			Treasury Shares/Stock					Additional Paid-in Capital			Accumulated Deficit			Accumulated Other Comprehensive Income			Total
	Shares	Amount		Shares		Amount
Balance at January 1, 2019	92,895	$	9	(121	)	$	(441	)	$	369,246		$	(267,383	)	$	402		$	101,833
Net loss	—	—		—		—			—			(5,719		)	—			(5,719		)
Other comprehensive income	—	—		—		—			—			—			76			76
Stock-based compensation	—	—		—		—			1,564			—			—			1,564
Issuance of common stock, restricted stock units	229	—		—		—			—			—			—			—
Proceeds from the exercise of stock options and employee stock purchase plan	139	—		—		—			141			—			—			141
Balance at March 31, 2019	93,263	$	9	(121	)	$	(441	)	$	370,951		$	(273,102	)	$	478		$	97,895
Net loss	—	—		—		—			—			(6,035		)	—			(6,035		)
Other comprehensive loss	—	—		—		—			—			—			(260		)	(260		)
Stock-based compensation	—	—		—		—			1,269			—			—			1,269
Issuance of common stock, restricted stock units	947	—		—		—			—			—			—			—
Net cash paid for payroll taxes on restricted stock unit releases	—	—		—		—			(19		)	—			—			(19		)
Balance at June 30, 2019	94,210	$	9	(121	)	$	(441	)	$	372,201		$	(279,137	)	$	218		$	92,850
	Common Stock			Treasury Shares/Stock					Additional Paid-in Capital			Accumulated Deficit			Accumulated Other Comprehensive Income (Loss)			Total
	Shares	Amount		Shares		Amount
Balance at December 31, 2017	90,380	$	8	(121	)	$	(441	)	$	359,347		$	(246,207	)	$	(598	)	$	112,109
Cumulative effect of ASC 606 - initial adoption	—	—		—		—			—			3,709			—			3,709
Adjusted balance at January 1, 2018	90,380	$	8	(121	)	$	(441	)	$	359,347		$	(242,498	)	$	(598	)	$	115,818
Net loss	—	—		—		—			—			(11,652		)	—			(11,652		)
Other comprehensive income	—	—		—		—			—			—			1,527			1,527
Stock-based compensation	—	—		—		—			3,223			—			—			3,223
Issuance of common stock, restricted stock units	84	—		—		—			—			—			—			—
Proceeds from the exercise of stock options and employee stock purchase plan	119	—		—		—			353			—			—			353
Net cash paid for payroll taxes on restricted stock unit releases	—	—		—		—			(53		)	—			—			(53		)
Balance at March 31, 2018	90,583	$	8	(121	)	$	(441	)	$	362,870		$	(254,150	)	$	929		$	109,216
Net loss	—	—		—		—			—			(8,887		)	—			(8,887		)
Other comprehensive loss	—	—		—		—			—			—			(205		)	(205		)
Stock-based compensation	—	—		—		—			3,525			—			—			3,525
Issuance of common stock, restricted stock units	1,207	—		—		—			—			—			—			—
Proceeds from the exercise of stock options and employee stock purchase plan	32	—		—		—			94			—			—			94
Net cash paid for payroll taxes on restricted stock unit releases	—	—		—		—			(364		)	—			—			(364		)
Balance at June 30, 2018	91,822	$	8	(121	)	$	(441	)	$	366,125		$	(263,037	)	$	724		$	103,379

The accompanying notes are an integral part of these Consolidated Financial Statements.

6

ServiceSource International, Inc.
Consolidated Statements of Cash Flows
(in thousands)
(unaudited)
	For the Six Months Ended June 30,
	2019			2018
Cash flows from operating activities:
Net loss	$	(11,754	)	$	(20,539	)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	6,994			9,744
Amortization of debt discount and issuance costs	38			4,923
Amortization of contract acquisition costs	868			930
Amortization of premium on short-term investments	—			(1,197		)
Amortization of right-of-use assets	4,725			—
Stock-based compensation	2,806			6,538
Restructuring and other related costs	1,166			482
Impairment loss on investment securities	—			1,958
Other	—			56
Net changes in operating assets and liabilities
Accounts receivable, net	11,328			5,593
Prepaid expenses and other assets	(898		)	(434		)
Contract acquisition costs	(249		)	(878		)
Accounts payable	(263		)	(2,515		)
Accrued compensation and benefits	(1,934		)	(1,647		)
Operating lease liabilities	(4,767		)	—
Accrued expenses	(797		)	(1,811		)
Other liabilities	(546		)	1,199
Net cash provided by operating activities	6,717			2,402
Cash flows from investing activities:
Acquisition of property and equipment	(6,095		)	(7,268		)
Purchases of short-term investments	—			(480		)
Sales of short-term investments	—			133,920
Maturities of short-term investments	—			4,240
Net cash (used in) provided by investing activities	(6,095		)	130,412
Cash flows from financing activities:
Repayment on finance lease obligations	(421		)	(156		)
Proceeds from issuance of common stock	141			447
Payments related to minimum tax withholdings on restricted stock unit releases	(19		)	(417		)
Net cash used in financing activities	(299		)	(126		)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(156		)	243
Net change in cash and cash equivalents and restricted cash	167			132,931
Cash and cash equivalents and restricted cash, beginning of period	27,779			52,633
Cash and cash equivalents and restricted cash, end of period	$	27,946		$	185,564
Supplemental disclosures of cash flow information:
Cash paid for interest	$	136		$	1,178
Supplemental disclosures of non-cash activities:
Acquisition of property and equipment accrued in accounts payable and accrued expenses	$	419		$	389
Increase in contract acquisition costs and benefit to accumulated deficit related to adoption of ASC 606	$	—		$	3,346
Increase in prepaid expenses and other, other liabilities and benefit to accumulated deficit related to adoption of ASC 606	$	—		$	363
Increase in operating lease liabilities related to the adoption of ASC 842	$	41,760		$	—
Increase in right-of-use assets related to the adoption of ASC 842	$	39,183		$	—
Decrease in prepaids and other assets related to the adoption of ASC 842	$	(749	)	$	—
Decrease in other liabilities related to the adoption of ASC 842	$	(3,308	)	$	—

The accompanying notes are an integral part of these Consolidated Financial Statements.

7

ServiceSource International, Inc.

Notes to Consolidated Financial Statements

(unaudited)

Note 1 — The Company

ServiceSource International, Inc. is a global leader in outsourced, performance-based customer success and revenue growth solutions. Through our people, processes and technology, we grow and retain revenue on behalf of our clients — some of the world’s leading business-to-business companies — in more than 45 languages. Our solutions help our clients strengthen their customer relationships, drive improved customer adoption, expansion and retention and minimize churn. Our technology platform and best-practice business processes combined with our highly-trained, client-focused revenue delivery professionals and data from 20 years of operating experience enable us to provide our clients greater value for our customer success services than attained by our clients' in-house customer success teams.

“ServiceSource,” “the Company,” “we,” “us,” or “our”, as used herein, refer to ServiceSource International, Inc. and its wholly-owned subsidiaries, unless the context indicates otherwise.

The Company’s pay-for-performance model allows its clients to pay for the services through either flat-rate or variable commissions based on the revenue generated by the Company on their behalf. Fixed-fee arrangements are typically used in quick deployments to address discrete target areas of our clients’ needs. The Company also earns revenue through its professional services teams, who assist clients with data optimization. The Company’s corporate headquarters is located in Denver, Colorado. The Company has additional U.S. offices in California and Tennessee, and international offices in Bulgaria, Ireland, Japan, Malaysia, Philippines, Singapore and the United Kingdom.

Note 2 — Summary of Significant Accounting Policies

Basis of Presentation

The accompanying interim unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and with the instructions to Form 10-Q and Article 10 of Regulation S-X for interim financial information. Accordingly, these financial statements do not include all the information required by GAAP for annual financial statements. The unaudited Consolidated Balance Sheet as of December 31, 2018 has been derived from the Company’s audited annual Consolidated Financial Statements included in our annual report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission on February 28, 2019. In the opinion of management, these Consolidated Financial Statements reflect all adjustments, including normal recurring adjustments, management considers necessary for a fair presentation of the Company’s financial position, operating results, and cash flows for the interim periods presented. These Consolidated Financial Statements and accompanying notes should be read in conjunction with our audited Consolidated Financial Statements and the notes thereto for the year ended December 31, 2018, included in our annual report on Form 10-K. Interim results are not necessarily indicative of results for the entire year.

Principles of Consolidation

The accompanying unaudited interim Consolidated Financial Statements include the accounts of ServiceSource International, Inc. and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of the Consolidated Financial Statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the reported amount of net revenue and expenses during the reporting period.

The Company’s significant accounting judgments and estimates include, but are not limited to: revenue recognition, the valuation and recognition of stock-based compensation, the recognition and measurement of current and deferred income tax assets and liabilities and uncertain tax positions, the provision for bad debts and impairment of goodwill and long-lived assets.

The Company bases its estimates and judgments on historical experience and on various assumptions that it believes are reasonable under the circumstances. However, future events are subject to change and estimates and judgments routinely require adjustment. Actual results and outcomes may differ from our estimates.

8

Reclassifications

Certain items on the Consolidated Statements of Cash Flows for the six months ended June 30, 2018 have been reclassified to conform to the current year presentation. These reclassifications did not affect the Company's Consolidated Balance Sheet as of December 31, 2018 or the Company's Consolidated Statements of Operations, Consolidated Statements of Comprehensive Loss or Consolidated Statements of Stockholders' Equity for the six months ended June 30, 2018.

New Accounting Standards Issued but Not yet Adopted

Financial Instruments - Credit Losses

In June 2016, the Financial Accounting Standard Board ("FASB") issued an Accounting Standard Update ("ASU") that amends the measurement of credit losses on financial instruments and requires measurement and recognition of expected versus incurred credit losses for financial assets held. In November 2018, the FASB issued an update to this ASU clarifying receivables arising from operating leases are accounted for using the lease guidance in Accounting Standards Codification Topic 842 Leases ("ASC 842"), and not as financial instruments. This ASU is effective for annual periods and interim periods for those annual periods beginning after December 15, 2019, with early adoption permitted. This standard will apply to the Company's trade receivables. Based on our current analysis the Company does not expect the adoption to have a material impact on its Consolidated Financial Statements as credit losses associated from trade receivables have historically been insignificant. The Company will adopt this standard effective January 1, 2020.

New Accounting Standards Adopted

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and will also require significant additional disclosures about the amount, timing, and uncertainty of cash flows from leases. Substantially all leases, including current operating leases, will be recognized by lessees on their balance sheet as a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. ASU 2016-02 initially required entities to adopt the standard using a modified retrospective transition method. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which provide transition practical expedients allowing companies to adopt the new standard with a cumulative effect adjustment as of the beginning of the year of adoption with prior year comparative financial information and disclosures remaining as previously reported. The Company adopted this standard effective January 1, 2019 and elected the package of practical expedients, accounting for leases with contractual terms less than 12 months as short-term leases and the transition relief option to apply legacy GAAP to periods prior to the standard’s effective date. Upon initial adoption of the standard, the Company recorded a $29.5 million right-of-use asset ("ROU") and a $32.1 million operating lease liability to the Consolidated Balance Sheets as of January 1, 2019.

Cloud Computing Implementation Costs

In August 2018, the FASB issued ASU 2016-13, Financial Instruments — Credit Losses (Topic 326) that provides guidance on the accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The accounting for the service element of a hosting arrangement that is a service contract is not affected by the new standard. This ASU is effective for annual periods and interim periods for those annual periods beginning after December 15, 2019, with early adoption permitted. The Company early adopted this standard effective January 1, 2019 and the effects of this standard were applied prospectively to eligible costs incurred on or after January 1, 2019. The adoption of this standard did not have a material impact on the Company’s Consolidated Financial Statements.

9

New Accounting Policies upon Adoption of ASC 842

Leases

At the inception of a contract, the Company determines whether the contract is or contains a lease. ROU assets represent the Company's right to use an underlying asset over the lease term and lease liabilities represent our remaining payment obligation under the lease. ROU assets and liabilities are recognized upon the lease commencement based on the present value of lease payments over the lease term. ROU assets are adjusted for any prepaid or accrued lease payments and unamortized lease incentives or initial direct costs. As most of the Company's leases do not provide an implicit rate, the Company uses an incremental borrowing rate, the variable interest rate on the revolving line of credit (the “Revolver”), and other information available at the lease commencement in determining the present value of lease payments. The Company's lease terms include options to extend or terminate the lease when it is reasonably certain it will exercise the option. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Lease expense and sublease income is recognized on a straight-line basis over the lease term.

The Company has lease agreements with lease and non-lease components, which are accounted for separately.  See “Note 6 — Leases” for additional information.

Note 3 — Fair Value of Financial Instruments

The Company follows a three-tier fair value hierarchy, which is described in detail in the Company's Annual Report on Form 10-K for the year ended December 31, 2018. There were no transfers between levels during the six months ended June 30, 2019 and 2018.

Cash equivalents consist of highly liquid investments with original maturities of three months or less at the time of purchase.  Cash and cash equivalents are classified within Level 1.

Short-term investments consist of readily marketable debt securities with a remaining maturity of more than three months from the time of purchase. The Company liquidated its investment securities during the first half of 2018 to repay the $150.0 million convertible notes that matured August 1, 2018. Based on the Company’s decision to sell these investment securities, an other-than-temporary impairment occurred and a $2.0 million impairment loss was recorded in the Consolidated Statements of Operations for the six months ended June 30, 2018.

The Company recognized realized gains from the sale of available-for-sale securities of $0.03 million for the three and six months ended June 30, 2018 and losses from the sale of available-for-sale securities of $0.2 million for the three and six months ended June 30, 2018. Gains and losses on available-for-sale securities are recorded in "Interest and other expense, net" in the Consolidated Statements of Operations.

The Company had restricted cash in "Other assets" in the Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018 of $2.3 million and $1.2 million, respectively. Restricted cash is classified within Level 1.

Note 4 — Other Current and Long-Term Liabilities

Other current liabilities were comprised of the following:

	June 30, 2019		December 31, 2018
	(in thousands)
Legal reserve	$	3,730	$	3,750
Finance lease obligations	959		954
Contract liability	549		873
Other liabilities	201		198
Employee stock purchase plan withholdings	251		384
Deferred rent	—		735
Total	$	5,690	$	6,894

10

Other long-term liabilities were comprised of the following:

	June 30, 2019		December 31, 2018
	(in thousands)
Asset retirement obligations	$	1,397	$	1,368
Finance lease obligations	1,142		1,510
Accrued restructuring costs	593		716
Deferred tax liability	289		268
Other accrued costs	116		105
Deferred rent	—		2,573
Total	$	3,537	$	6,540

Note 5 — Debt

Revolving Line of Credit

In July 2018, the Company entered into a $40.0 million senior secured Revolver that allows us to borrow against our domestic receivables as defined in the credit agreement. The Revolver matures July 2021 and bears interest at a variable rate per annum based on the greater of the prime rate, the Federal Funds rate plus 0.50% or the one-month LIBOR rate plus 1.00%, plus, in each case, a margin of 1.00% for base rate borrowings or 2.00% for Eurodollar borrowings. As of June 30, 2019, the Company did not have any borrowings outstanding on the Revolver and therefore has no future obligations.

The obligations under the credit agreement are secured by substantially all assets of the borrowers and certain of their subsidiaries, including pledges of equity in certain of the Company’s subsidiaries. The Revolver has covenants with which the Company was in compliance as of June 30, 2019 and December 31, 2018.

Deferred Debt Issuance Costs

Discounts and premiums to the principal amounts are included in the carrying value of debt and amortized to "Interest and other expense, net" over the remaining life of the underlying debt. Unamortized debt issuance costs related to the Revolver were $0.1 million and $0.2 million as of June 30, 2019 and December 31, 2018, respectively. The amortization of all premiums and discounts related to the convertible notes that matured August 2018 was $2.3 million and $4.5 million for the three and six months ended June 30, 2018, respectively.

Interest expense related to the amortization of debt issuance costs, interest expense associated with the Company's debt obligations and accretion of the Company's debt discount was $0.04 million and $3.1 million for the three months ended June 30, 2019 and 2018, respectively, and $0.1 million and $6.0 million for the six months ended June 30, 2019 and 2018, respectively.

Note 6 — Leases

The Company has operating leases for office space and finance leases for certain equipment under non-cancelable agreements with various expiration dates through April 2030. Certain office leases include the option to extend the term between three to seven years and certain office leases include the option to terminate the lease upon written notice within one to eight years after lease commencement. Leases with an initial term of 12 months or less are not recorded on the balance sheet.

In January 2018, the Company entered into a sublease with a third-party for the San Francisco office space through the remaining term of the lease of November 30, 2022. The Company recognizes rent expense and sublease income on a straight-line basis over the lease period and accrues for rent expense and sublease income incurred but not paid.

Rent expense for the three and six months ended June 30, 2018 was $3.1 million and $5.8 million, respectively. Rent income for the three and six months ended June 30, 2018 was $0.5 million and $0.6 million, respectively.

11

Supplemental income statement information related to leases was as follows:

	For the Three Months Ended June 30, 2019			For the Six Months Ended June 30, 2019
	(in thousands)
Operating lease cost	$	3,116		$	5,997
Finance lease cost:
Amortization of leased assets	171			322
Interest on lease liabilities	45			86
Total finance lease cost	216			408
Sublease income	(468		)	(936		)
Net lease cost	$	2,864		$	5,469

Supplemental balance sheet information related to leases was as follows:

	June 30, 2019
	(in thousands)
Operating leases:
Right-of-use assets	$	33,190
Operating lease liabilities	$	8,419
Operating lease liabilities, net of current portion	28,684
Total operating lease liabilities	$	37,103
Finance leases:
Property and equipment	$	3,479
Accumulated depreciation	(1,463		)
Property and equipment, net	$	2,016
Other current liabilities	$	959
Other long-term liabilities	1,142
Total finance lease liabilities	$	2,101

Lease term and discount rate information related to leases was as follows:

	June 30, 2019
Weighted-average remaining lease term (in years):
Operating lease	5.0
Finance lease	2.3
Weighted-average discount rate:
Operating lease	6.5	%
Finance lease	8.2	%

12

Maturities of lease liabilities were as follows as of June 30, 2019:

	Operating Leases			Operating Sublease			Finance Leases
	(in thousands)
Remainder of 2019	$	4,882		$	(942	)	$	555
2020	11,030			(1,932		)	1,040
2021	10,562			(1,989		)	633
2022	7,126			(1,878		)	64
2023	2,218			—			—
Thereafter	8,769			—			—
Total lease payments	44,587			(6,741		)	2,292
Less: interest	(6,828		)	—			(191		)
Less: tenant improvements reimbursement	(656		)	—			—
Total	$	37,103		$	(6,741	)	$	2,101

Subsequent to June 30, 2019, the Company entered into a sublease agreement with a third party for the San Francisco office space through the remaining term of the lease, November 30, 2023, with total sublease income of approximately $2.8 million.

Note 7 — Commitments and Contingencies

Letter of Credit

In connection with two of our leased facilities, the Company is required to maintain two letters of credit totaling $2.3 million. The letters of credit are secured by $2.3 million of cash in money market accounts, which are classified as restricted cash in "Other assets" in our Consolidated Balance Sheets.

Litigation

The Company is subject to various legal proceedings and claims arising in the ordinary course of our business, including the cases discussed below.  Although the results of litigation and claims cannot be predicted with certainty, the Company is currently not aware of any litigation or threats of litigation in which the final outcome could have a material adverse effect on our business, operating results, financial position or cash flows. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources and other factors. The Company records a contingent liability when it is probable that a loss has been incurred and the amount is reasonably estimable in accordance with accounting for contingencies. As of June 30, 2019 and December 31, 2018, the Company accrued a $3.7 million and $3.8 million, respectively, reserve relating to our potential liability for currently pending disputes, reflected in "Other current liabilities" in the Consolidated Balance Sheets.

On August 23, 2016, the United States District Court for the Middle District of Tennessee granted conditional class certification in a lawsuit originally filed on September 21, 2015 by three former senior sales representatives. The lawsuit, Sarah Patton, et al v. ServiceSource Delaware, Inc., asserts a claim under the Fair Labor Standards Act alleging that certain non-exempt employees in our Nashville location were not paid for all hours worked and were not properly paid for overtime hours worked.  The complaint also asserts claims under Tennessee state law for breach of contract and unjust enrichment; and, on September 28, 2018, the plaintiffs filed a motion to certify the state law breach of contract and unjust enrichment claims as a class action.  A settlement of all claims has been reached and the settlement amounts will be paid in phases. The Company anticipates settlement payments will be completed by the end of 2019.

13

Non-cancelable Service Contract Commitments

Future minimum payments under non-cancelable service contract commitments were as follows:

	June 30, 2019
	(in thousands)
Remainder of 2019	$	3,886
2020	9,091
2021	7,986
2022	7,431
2023	8,237
Thereafter	—
Total	$	36,631

Note 8 — Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs

The following tables present the disaggregation of revenue from contracts with our clients:

Revenue by Performance Obligation

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Professional services	$	442	$	692	$	825	$	2,699
Selling services	51,916		60,419		107,044		116,997
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Revenue by Geography

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
APJ	$	9,345	$	9,255	$	18,019	$	16,849
EMEA	13,418		14,669		27,054		30,191
NALA	29,595		37,187		62,796		72,656
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Revenue by Contract Pricing

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Fixed consideration	$	18,828	$	20,683	$	38,557	$	38,425
Variable consideration	33,530		40,428		69,312		81,271
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Contract Balances

Once the Company obtains a client contract, the timing of satisfying performance obligations and the receipt of client consideration can be different and will give rise to contract assets and contract liabilities. As of June 30, 2019 and December 31, 2018, the contract asset balance totaled $0.1 million and $0.2 million, respectively, and the contract liability balance totaled $0.5 million and $0.9 million, respectively. Contract assets and contract liabilities are reflected in "Prepaid expenses and other", "Other assets" and "Other current liabilities" in the Consolidated Balance Sheets.

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Transaction Price Allocated to Remaining Performance Obligations

The Company maintains contracts with fixed consideration that are generally with long-standing client relationships and typically renew annually. Assuming none of the Company’s current contracts with fixed consideration are renewed, we estimate receiving approximately $42.5 million in future selling services fixed consideration as of June 30, 2019. Professional services revenues from fixed consideration are based on proportional performance which is typically concluded within 90 days of contract execution. The Company typically bills professional services upfront upon obtaining a client contract. As of June 30, 2019, we estimate $0.2 million in professional services fixed consideration revenue to be recognized through the remainder of 2019.

Contract Acquisition Costs

Certain commissions paid to the Company's sales team upon obtaining a client contract are incremental and recoverable, and capitalized as contract acquisition costs. Under the transition guidance, the Company recorded a $3.3 million contract acquisition asset and corresponding offset to the opening accumulated deficit balance related to previously expensed sales commissions. The Company expensed $1.5 million of the $3.3 million of contract acquisition asset during 2018 and will expense the remainder of the asset over the next five years as follows: $0.4 million remaining in 2019, $0.6 million in 2020 and $0.3 million in 2021 and beyond. The Company recorded $0.2 million and $0.5 million, respectively, in amortization expense for the three and six months ended June 30, 2019 and $0.4 million and $0.8 million, respectively, of amortization for the three and six months ended June 30, 2018 related to amounts capitalized upon the adoption of ASC 606.

Subsequent to the adoption of ASC 606, the Company capitalized an additional $0.2 million and $1.1 million as of June 30, 2019 and December 31, 2018, respectively, of sales commissions as contract acquisition costs related to contracts obtained during the period. The Company recorded amortization expense of $0.3 million and $0.4 million, respectively, for the three and six months ended June 30, 2019 and $0.1 million for the three and six months ended June 30, 2018 related to the amounts capitalized. As of June 30, 2019, the weighted-average remaining amortization period related to these capitalized costs was approximately 2.4 years.

Impairment recognized on contract costs was insignificant for the three and six months ended June 30, 2019 and 2018.

Applying the practical expedient for amortization periods one year or less, the Company recognizes any incremental costs of obtaining contracts as expense when the cost is incurred. These costs are included in "Sales and marketing" in the Consolidated Statements of Operations.

Note 9 — Stockholders' Equity

Stock-Based Compensation Expense

The following table presents stock-based compensation expense as allocated within the Company's Consolidated Statements of Operations:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Cost of revenue	$	129	$	279	$	288	$	558
Sales and marketing	429		833		872		1,719
Research and development	18		58		12		122
General and administrative	660		2,257		1,634		4,139
Total stock-based compensation	$	1,236	$	3,427	$	2,806	$	6,538

The above table does not include capitalized stock-based compensation related to internal-use software of $0.03 million for the three and six months ended June 30, 2019 and $0.1 million and $0.2 million for the three and six months ended June 30, 2018, respectively.

15

Stock Awards Issued to Employees

The following table summarizes information related to stock options:

	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life (Years)	Intrinsic Value
	(in thousands)					(in thousands)
Outstanding as of December 31, 2018	7,516		$	3.34		$	—
Granted	182		$	1.03
Expired and/or forfeited	(3,589	)	$	4.17
Outstanding as of June 30, 2019	4,109		$	2.51	7.89	$	—
Exercisable as of June 30, 2019	1,232		$	5.17	4.46	$	—

The weighted-average fair value of options granted during the six months ended June 30, 2019 and 2018 was $0.51 and $1.84, respectively. As of June 30, 2019, there was $1.7 million of unrecognized compensation expense related to stock options granted under the 2011 Equity Incentive Plan (the "2011 Plan"), which is expected to be recognized over a weighted-average period of 2.7 years.

The following table summarizes information related to restricted stock units and performance-based restricted stock units:

	Units		Weighted-Average Grant Date Fair Value
	(in thousands)
Non-vested as of December 31, 2018	5,669		$	3.29
Granted	325		$	1.03
Vested(1)	(1,195	)	$	3.78
Forfeited	(995	)	$	3.79
Non-vested as of June 30, 2019	3,804		$	2.81

⁽¹⁾ 1,175 thousand shares of common stock were issued for restricted stock units vested and the remaining 20 thousand shares were withheld for taxes.

As of June 30, 2019, there was $8.6 million of unrecognized compensation expense related to non-vested restricted stock units and performance-based restricted stock units granted under the 2011 Plan, which is expected to be recognized over a weighted-average period of 2.4 years.

Potential shares of common stock that are not included in the determination of diluted net loss per share because they are anti-dilutive for the periods presented consist of stock options, unvested restricted stock and shares to be purchased under our 2011 Employee Stock Purchase Plan. The Company excluded from diluted earnings per share the weighted-average common share equivalents related to 7.6 million and 5.1 million shares for the three months ended June 30, 2019 and 2018, respectively, and 8.9 million and 5.7 million shares for the six months ended June 30, 2019 and 2018, respectively, because their effect would have been anti-dilutive.

Note 10 — Income Taxes

The Company is subject to taxation in the U.S. and various state and foreign jurisdictions. Earnings from non-U.S. activities are subject to local country income tax. The Company computes its quarterly income tax provision by using a forecasted annual effective tax rate and adjusts for any discrete items arising during the quarter. The primary difference between the effective tax rate and the federal statutory tax rate relates to the valuation allowances on the Company’s net operating losses and foreign tax rate differences. The "Provision for income tax expense" in the Consolidated Statements of Operations primarily consist of income and withholding taxes for foreign and state jurisdictions where the Company has profitable operations, as well as valuation allowance adjustments for certain U.S. tax jurisdictions. No tax benefit was provided for losses incurred in the U.S., Ireland and Singapore because those losses are offset by a full valuation allowance. The tax years 2011 through 2019 generally remain subject to examination by federal, state and foreign tax authorities.

The gross amount of the Company’s unrecognized tax benefits was $1.0 million and $0.9 million as of June 30, 2019 and December 31, 2018, respectively, none of which, if recognized, would affect the Company’s effective tax rate. The Company does not expect its unrecognized tax benefits to change significantly over the next 12 months. The Company recognizes interest and penalties accrued related to unrecognized tax benefits in income tax expense. During the three and six months ended June 30, 2019 and 2018, interest and penalties recognized were insignificant.

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Note 11 — Restructuring and Other Related Costs

The Company has undergone restructuring efforts to better align its cost structure with business and market conditions. These restructuring efforts included severance and other employee costs, lease and other contract termination costs and asset impairments. Severance and other employee costs include severance payments, related employee benefits, stock-based compensation related to the accelerated vesting of certain equity awards and employee-related legal fees. Lease and other contract termination costs include charges related to lease consolidation and abandonment of spaces no longer utilized and the cancellation of certain contracts with outside vendors. Asset impairments include charges related to leasehold improvements and furniture in spaces vacated or no longer in use. The restructuring plans and future cash outlays are recorded in "Accrued expenses", "Accrued compensation and benefits" and "Other long-term liabilities" in our Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018.

In February 2019, the Company announced a restructuring effort to better align its cost structure with current business and market conditions, resulting in a headcount reduction. The Company recognized charges related to this restructuring effort of $0.1 million and $1.2 million for the three and six months ended June 30, 2019, respectively, and expects to incur additional costs through September 2019.

The following table presents a reconciliation of the beginning and ending fair value liability balance related to the February 2019 restructuring effort:

	Severance and Other Employee Costs
	(in thousands)
Balance as of January 1, 2019	$	—
Restructuring and other related costs	1,167
Cash paid	(1,117		)
Balance as of June 30, 2019	$	50

In May 2017, the Company announced a restructuring effort to better align its cost structure with current business and market conditions, including a headcount reduction and the reduction of office space in four locations. The Company recognized charges related to this restructuring effort of $0.04 million for the three and six months ended June 30, 2019 and $0.2 million for the three and six months ended June 30, 2018. The Company does not expect to incur additional restructuring charges related to the May 2017 restructuring as of June 30, 2019.

The following table presents a reconciliation of the beginning and ending fair value liability balance related to the May 2017 restructuring effort:

	Severance and Other Employee Costs			Lease and Other Contract Termination Costs			Asset Impairments			Total
	(in thousands)
Balance as of January 1, 2017	$	—		$	—		$	—		$	—
Restructuring and other related costs	3,483			2,939			886			7,308
Cash paid	(3,060		)	(1,185		)	—			(4,245		)
Change in estimates and non-cash charges	—			—			(886		)	(886		)
Acceleration of stock-based compensation expense in additional paid-in capital	(352		)	—			—			(352		)
Balance as of December 31, 2017	71			1,754			—			1,825
Restructuring and other related costs	120			89			—			209
Cash paid	(188		)	(1,133		)	—			(1,321		)
Change in estimates and non-cash charges	(3		)	252			—			249
Balance as of December 31, 2018	—			962			—			962
Restructuring and other related costs	—			39						39
Cash paid	—			(93		)	—			(93		)
Change in estimates and non-cash charges	—			(40		)	—			(40		)
Balance as of June 30, 2019	$	—		$	868		$	—		$	868

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) should be read in conjunction with our unaudited Consolidated Financial Statements and notes thereto which appear elsewhere in this quarterly report on Form 10-Q.

This report, including this MD&A, includes estimates, projections, statements relating to our business plans, objectives, and expected operating results that are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward looking statements may appear throughout this report. These forward-looking statements are generally identified by the words “believe,” “project,” “expect,” “anticipate,” “estimate,” “intend,” “strategy,” “future,” “opportunity,” “plan,” “may,” “should,” “will,” “would,” “will be,” “will continue,” “will likely result” and variations of such words or similar expressions. Forward-looking statements are based on current expectations and assumptions that are subject to risks and uncertainties that may cause actual results to differ materially. Factors that could cause or contribute to such differences include, but are not limited to, those identified elsewhere in this report and those discussed in the sections of our Annual Report on Form 10-K entitled “Forward Looking Statements” and “Risk Factors” and in our other filings with the Securities and Exchange Commission (“SEC”). Furthermore, such forward-looking statements speak only as of the date of this report. Except as required by law, we undertake no obligation to update or revise publicly any forward-looking statements, whether because of new information, future events, or otherwise.

Overview

ServiceSource International, Inc. is a global leader in outsourced, performance-based customer success and revenue growth solutions. Through our people, processes and technology, we grow and retain revenue on behalf of our clients — some of the world’s leading business-to-business companies — in more than 45 languages. Our solutions help our clients strengthen their customer relationships, drive improved customer adoption, expansion and retention and minimize churn. Our technology platform and best-practice business processes combined with our highly-trained, client-focused revenue delivery professionals and data from 20 years of operating experience enable us to provide our clients greater value for our customer success services than attained by our clients' in-house customer success teams.

“ServiceSource,” “the Company,” “we,” “us,” or “our”, as used herein, refer to ServiceSource International, Inc. and its wholly-owned subsidiaries, unless the context indicates otherwise.

Key Financial Results For the Three Months Ended June 30, 2019

• GAAP revenue was $52.4 million compared with $61.1 million reported for the same period in 2018.

• GAAP net loss was $6.0 million or $0.06 per diluted share, compared with GAAP net loss of $8.9 million or $0.10 per diluted share reported for the same period in 2018.

• Adjusted EBITDA was negative $0.5 million compared with positive Adjusted EBITDA of $3.2 million reported for the same period in 2018. See “Non-GAAP Financial Measurements” below for a reconciliation of Adjusted EBITDA from "Net loss."

• Ended the quarter with $27.9 million of cash and cash equivalents and restricted cash and no borrowings under the Company’s $40.0 million revolving line of credit.

Results of Operations

For the Three Months Ended June 30, 2019 Compared to the Same Period Ended June 30, 2018

Net Revenue, Cost of Revenue and Gross Profit

Net revenue is primarily attributable to commissions we earn from the sale of renewals of maintenance, support and subscription agreements on behalf of our clients. We also generate revenues from selling professional services. Historically, we earned a small percentage of our total revenue from the sale of subscriptions to our cloud-based applications.

18

Cost of revenue includes employee compensation, technology costs, including those related to the delivery of our cloud-based technologies and allocated overhead costs.

	For the Three Months Ended June 30,
	2019				2018
	Amount		% of Net Revenue		Amount		% of Net Revenue		$ Change			% Change
	(in thousands)				(in thousands)				(in thousands)
Net revenue	$	52,358	100	%	$	61,111	100	%	$	(8,753	)	(14	)%
Cost of revenue	38,349		73	%	42,463		69	%	(4,114		)	(10	)%
Gross profit	$	14,009	27	%	$	18,648	31	%	$	(4,639	)	(25	)%

Net revenue decreased by $8.8 million or 14%, for the three months ended June 30, 2019 compared to the same period in 2018, primarily due to client churn and lower bookings.

Cost of revenue decreased $4.1 million, or 10%, for the three months ended June 30, 2019 compared to the same period in 2018, primarily due to the following:

• $2.8 million decrease in employee related costs primarily due to lower bonus and commissions driven by lower revenue attainment, lower salary costs driven by headcount remaining consistent with increase in lower cost locations and lower travel and entertainment expenditures; and

• $1.8 million decrease in depreciation and amortization expense primarily due to internally developed software fully amortized as of July 2018; partially offset by

• $0.6 million increase in information technology costs.

Operating Expenses

	For the Three Months Ended June 30,
	2019				2018
	Amount		% of Net Revenue		Amount		% of Net Revenue		$ Change			% Change
	(in thousands)				(in thousands)				(in thousands)
Operating expenses:
Sales and marketing	$	7,486	14	%	$	9,252	15	%	$	(1,766	)	(19	)%
Research and development	1,274		2	%	1,780		3	%	(506		)	(28	)%
General and administrative	10,970		21	%	13,157		22	%	(2,187		)	(17	)%
Restructuring and other related costs	148		—	%	156		—	%	(8		)	(5	)%
Total operating expenses	$	19,878	38	%	$	24,345	40	%	$	(4,467	)	(18	)%

Sales and Marketing

Sales and marketing expenses primarily consist of compensation expenses and sales commissions for our sales and marketing staff, amortization of contract acquisition costs, allocated expenses and marketing programs and events.

Sales and marketing expense decreased $1.8 million, or 19%, for the three months ended June 30, 2019 compared to the same period in 2018, primarily due to a decrease in employee related costs associated with employee attrition, lower revenue attainment and our restructuring effort to better align our cost structure with current business and market conditions as well as a decrease in travel costs.

Research and Development

Research and development expenses primarily consist of employee compensation expense, allocated costs and the cost of third-party service providers.

Research and development expense decreased $0.5 million, or 28%, for the three months ended June 30, 2019 compared to the same period in 2018, primarily due to a decrease in employee related costs driven by our restructuring effort to better align our cost structure with current business and market conditions as well as a decrease in bonus expense due to lower revenue attainment.

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General and Administrative

General and administrative expenses primarily consist of employee compensation expense for our executive, human resources, finance and legal functions and expenses for professional fees for accounting, tax and legal services, as well as allocated expenses, which consist of depreciation, amortization of internally developed software, facility and technology costs.

General and administrative expense decreased $2.2 million, or 17%, for the three months ended June 30, 2019 compared to the same period in 2018, primarily due to the following:

• $3.0 million decrease in employee related costs primarily due to changes in executive management, decrease in bonus expense due to lower revenue attainment and decreases in travel costs and recruitment services; partially offset by

• $0.6 million increase in depreciation and amortization expense; and

• $0.4 million increase in information technology costs.

Restructuring and Other Related Costs

Restructuring and other related costs primarily consist of severance and other employee costs.

Restructuring and other related costs remained relatively flat for the three months ended June 30, 2019 compared to the same period in 2018.

Other Expenses

Interest and other expense, net primarily consists of amortization of debt issuance costs, interest expense associated with the Company's debt obligations, accretion of the Company's debt discount, interest income earned on our cash and cash equivalents and marketable securities, imputed interest from our finance lease payments and foreign exchange gains and losses.

	For the Three Months Ended June 30,
	2019					2018
	Amount			% of Net Revenue		Amount			% of Net Revenue		$ Change			% Change
	(in thousands)					(in thousands)					(in thousands)
Interest expense	$	(120	)	—	%	$	(3,106	)	(5	)%	$	2,986		(96	)%
Other income, net	$	62		—	%	$	330		1	%	$	(268	)	(81	)%

Interest expense decreased $3.0 million, or 96%, for the three months ended June 30, 2019 compared to the same period in 2018, primarily due to the maturity and payoff of our $150.0 million convertible notes in August 2018.

Other income, net decreased $0.3 million, or 81% for the three months ended June 30, 2019 compared to the same period in 2018, primarily due to a decrease in interest income earned on our short-term investments and foreign currency fluctuations.

Provision for Income Tax Expense

	For the Three Months Ended June 30,
	2019					2018
	Amount			% of Net Revenue		Amount			% of Net Revenue		$ Change		% Change
	(in thousands)					(in thousands)					(in thousands)
Provision for income tax expense	$	(108	)	—	%	$	(414	)	(1	)%	$	306	(74	)%

Provision for income tax expense resulted primarily from profitable jurisdictions where no valuation allowance has been provided. Provision for income tax expense decreased $0.3 million, or 74% for the three months ended June 30, 2019 compared to the same period in 2018, due to a decrease in profitable operations in certain foreign jurisdictions.

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For the Six Months Ended June 30, 2019 Compared to the Same Period Ended June 30, 2018

Net Revenue, Cost of Revenue and Gross Profit

	For the Six Months Ended June 30,
	2019				2018
	Amount		% of Net Revenue		Amount		% of Net Revenue		$ Change			% Change
	(in thousands)				(in thousands)				(in thousands)
Net revenue	$	107,869	100	%	$	119,696	100	%	$	(11,827	)	(10	)%
Cost of revenue	77,825		72	%	84,187		70	%	(6,362		)	(8	)%
Gross profit	$	30,044	28	%	$	35,509	30	%	$	(5,465	)	(15	)%

Net revenue decreased by $11.8 million or 10%, for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to client churn and lower bookings.

Cost of revenue decreased $6.4 million, or 8%, for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to the following:

• $3.8 million decrease in employee related costs primarily due to lower bonus and commissions driven by lower revenue attainment, lower salary costs driven by headcount remaining consistent with increase in lower cost locations and lower travel and entertainment expenditures;

• $3.7 million decrease in depreciation and amortization expense primarily due to internally developed software fully amortized as of July 2018; and

• $0.5 million decrease in professional service fees; partially offset by

• $1.6 million increase in information technology and facilities costs.

Operating Expenses

	For the Six Months Ended June 30,
	2019				2018
	Amount		% of Net Revenue		Amount		% of Net Revenue		$ Change			% Change
	(in thousands)				(in thousands)				(in thousands)
Operating expenses:
Sales and marketing	$	15,435	14	%	$	18,490	15	%	$	(3,055	)	(17	)%
Research and development	2,537		2	%	3,296		3	%	(759		)	(23	)%
General and administrative	21,952		20	%	26,046		22	%	(4,094		)	(16	)%
Restructuring and other related costs	1,206		1	%	209		—	%	997			*
Total operating expenses	$	41,130	38	%	$	48,041	40	%	$	(6,911	)	(14	)%

* Not considered meaningful.

Sales and Marketing

Sales and marketing expense decreased $3.1 million, or 17%, for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to a decrease in employee related costs associated with employee attrition, lower revenue attainment and our restructuring effort to better align our cost structure with current business and market conditions as well as a decrease in travel costs.

Research and Development

Research and development expense decreased $0.8 million, or 23%, for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to a decrease in employee related costs driven by our restructuring effort to better align our cost structure with current business and market conditions as well as a decrease in bonus expense due to lower revenue attainment.

21

General and Administrative

General and administrative expense decreased $4.1 million, or 16%, for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to the following:

• $4.6 million decrease in employee related costs primarily due to changes in executive management, decrease in bonus expense due to lower revenue attainment and decreases in temporary labor, recruitment services and travel costs; and

• $0.9 million decrease in professional service fees; partially offset by

• $0.9 million increase in depreciation and amortization expense; and

• $0.7 million increase in information technology costs.

Restructuring and Other Related Costs

Restructuring and other related costs increased $1.0 million for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to costs incurred during the six months ended June 30, 2019 related to the February 2019 restructuring effort to better align our cost structure with current business and market conditions, resulting in a headcount reduction in our sales and marketing and research and development teams.

Other Expenses

	For the Six Months Ended June 30,
	2019					2018
	Amount			% of Net Revenue		Amount			% of Net Revenue		$ Change			% Change
	(in thousands)					(in thousands)					(in thousands)
Interest expense	$	(212	)	—	%	$	(6,128	)	(5	)%	$	5,916		(97	)%
Other (expense) income, net	$	(336	)	—	%	$	506		—	%	$	(842	)	*
Impairment loss on investment securities	$	—		—	%	$	(1,958	)	(2	)%	$	1,958		(100	)%

* Not considered meaningful.

Interest expense decreased $5.9 million, or 97%, for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to the maturity and payoff of our $150.0 million convertible notes in August 2018.

Other (expense) income, net decreased $0.8 million for the six months ended June 30, 2019 compared to the same period in 2018, primarily due to a decrease in interest income earned on our short-term investments and foreign currency fluctuations.

During 2018, we determined to liquidate the majority of our investment securities to have sufficient cash on hand to repay our $150.0 million convertible notes due August 1, 2018. Based on our decision to sell these investment securities, we determined an other-than-temporary impairment occurred as of March 31, 2018. Consequently, a $2.0 million impairment loss was recorded in our Consolidated Statements of Operations for the six months ended June 30, 2018.

Provision for Income Tax Expense

	For the Six Months Ended June 30,
	2019					2018
	Amount			% of Net Revenue		Amount			% of Net Revenue		$ Change		% Change
	(in thousands)					(in thousands)					(in thousands)
Provision for income tax expense	$	(120	)	—	%	$	(427	)	—	%	$	307	(72	)%

Provision for income tax expense resulted primarily from profitable jurisdictions where no valuation allowance has been provided. Provision for income tax expense decreased $0.3 million, or 72% for the six months ended June 30, 2019 compared to the same period in 2018, due to a decrease in profitable operations in certain foreign jurisdictions.

Liquidity and Capital Resources

Our primary operating cash requirements include the payment of compensation and related costs and costs for our facilities and information technology infrastructure. Historically, we have financed our operations from cash provided by our operating activities and cash proceeds from the exercise of stock options and our employee stock purchase plan. We believe our existing cash and cash equivalents and available funds from our senior secured revolving line of credit (the “Revolver”) will be sufficient to meet our working capital and capital expenditure needs over the next twelve months.

22

As of June 30, 2019, we had cash and cash equivalents of $25.7 million, which primarily consisted of demand deposits and money market mutual funds. Included in cash and cash equivalents was $5.0 million held by our foreign subsidiaries used to satisfy their operating requirements. We consider the undistributed earnings of ServiceSource Europe Ltd. and ServiceSource International Singapore Pte. Ltd. permanently reinvested in foreign operations and have not provided for U.S. income taxes on such earnings. As of June 30, 2019, we had no unremitted earnings from our foreign subsidiaries.

During July 2018, we entered into a $40.0 million Revolver that allows us to borrow against our domestic receivables as defined in the credit agreement. The Revolver matures July 2021 and bears interest at a variable rate per annum based on the greater of the prime rate, the Federal Funds rate plus 0.50% or the one-month LIBOR rate plus 1.00%, plus, in each case, a margin of 1.00% for base rate borrowings or 2.00% for Eurodollar borrowings. Proceeds from the credit facility are used for working capital and general corporate purposes.

As of June 30, 2019, we did not have any borrowings outstanding under the Revolver. Obligations under the credit agreement are secured by substantially all assets of the borrowers and certain of their subsidiaries, including pledges of equity in certain of our subsidiaries. The Revolver has covenants with which we are in compliance as of June 30, 2019 and December 31, 2018.

Letter of Credit and Restricted Cash

In connection with two of our leased facilities, we are required to maintain two letters of credit totaling $2.3 million. The letters of credit are secured by $2.3 million of cash in money market accounts, which are classified as restricted cash in "Other assets" in our Consolidated Balance Sheets.

Cash Flows

The following table presents a summary of our cash flows:

	For the Six Months Ended June 30,
	2019			2018
	(in thousands)
Net cash provided by operating activities	$	6,717		$	2,402
Net cash (used in) provided by investing activities	(6,095		)	130,412
Net cash used in financing activities	(299		)	(126		)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(156		)	243
Net change in cash and cash equivalents and restricted cash	$	167		$	132,931

Our total depreciation and amortization expense was comprised of the following:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Purchased intangible asset amortization	$	—	$	—	$	—	$	85
Internally developed software amortization	1,407		3,044		2,666		5,876
Property and equipment depreciation	2,302		1,897		4,328		3,783
Total depreciation and amortization	$	3,709	$	4,941	$	6,994	$	9,744

Operating Activities

Net cash provided by operating activities increased $4.3 million for the six months ended June 30, 2019 compared to the six months ended June 30, 2018, primarily as a result of improved cash collections from customers during the current period compared to the prior period and lower cash payments made during the current period compared to the prior period related to operating costs previously accrued for; offset by a decrease in Adjusted EBITDA.

Investing Activities

Net cash provided by investing activities decreased $136.5 million for the six months ended June 30, 2019 compared to the six months ended June 30, 2018, primarily as a result of a decrease in cash inflows from the sale and maturity of our short-term investments during 2018, offset by a decrease in cash outflows related to the acquisition of property and equipment during the six months ended June 30, 2019.

23

Financing Activities

Net cash used in financing activities increased $0.2 million for the six months ended June 30, 2019 compared to the six months ended June 30, 2018, primarily as a result of a reduction in proceeds from the issuance of common stock and an increase in cash outflows from the repayment of finance lease obligations during the six months ended June 30, 2019, offset by a decrease in payments related to minimum tax withholdings on restricted stock unit releases.

Off-Balance Sheet Arrangements

As of June 30, 2019 we did not have any off balance sheet arrangements.

Contractual Obligations and Commitments

Our contractual obligations primarily consist of obligations under operating and finance leases for office space and certain equipment and non-cancelable service contracts.

The following table summarizes future payments of our contractual obligations as of June 30, 2019:

	Total			Less than 1 year			1- 3 years			4- 5 years			More than 5 years
	(in thousands)
Finance lease obligations	$	2,101		$	959		$	1,142		$	—		$	—
Operating lease obligations	37,103			7,977			17,663			4,742			6,721
Operating sublease income(2)	(6,741		)	(1,903		)	(3,980		)	(858		)	—
Service contracts	36,631			8,431			24,081			4,119			—
Restructuring and other related costs	918			325			491			102			—
Total(1)	$	70,012		$	15,789		$	39,397		$	8,105		$	6,721

⁽¹⁾ Excluded from the table is the income tax liability we recorded for the difference between the benefit recognized and measured and the tax position taken or expected to be taken on our tax returns. As of June 30, 2019, our liability for unrecognized tax benefits was $1.0 million. Reasonably reliable estimate of the amounts and periods of related future payments cannot be made at this time.

⁽²⁾ Subsequent to June 30, 2019, the Company entered into a sublease agreement with a third party for the San Francisco office space through the remaining term of the lease, November 30, 2023, with total sublease income of approximately $2.8 million.

The contractual commitment amounts in the table above are associated with agreements that are enforceable and legally binding, which specify significant terms, included payment terms, related services and the approximate timing of the transaction. Obligations under contracts that we may cancel without a significant penalty are not included in the above table.

Critical Accounting Policies and Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. ("GAAP") requires management to use judgment in the application of accounting policies, including making estimates and assumptions. The Company's significant accounting policies and estimates are described in "Management's Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Policies and Estimates" in our Annual Report on Form 10-K for the year ended December 31, 2018. These policies were followed in preparing the Consolidated Financial Statements for the three and six months ended June 30, 2019 and are consistent with the year ended December 31, 2018, except for the new accounting policies related to the adoption and application of Accounting Standards Codification Topic 842, Lease Accounting (“ASC 842") as of January 1, 2019.

Recent Accounting Pronouncements

For a discussion of recent accounting pronouncements, see Note 2 - "Summary of Significant Accounting Policies" to our Consolidated Financial Statements.

24

Non-GAAP Financial Measurements

ServiceSource believes net income (loss), as defined by GAAP, is the most appropriate financial measure of our operating performance; however, ServiceSource considers adjusted EBITDA to be a useful supplemental, non-GAAP financial measure of our operating performance. We believe adjusted EBITDA can assist investors in understanding and assessing our operating performance on a consistent basis, as it removes the impact of the Company's capital structure and other non-cash or non-recurring items from operating results and provides an additional tool to compare ServiceSource's financial results with other companies in the industry, many of which present similar non-GAAP financial measures.

EBITDA consists of net income (loss) plus provision for income tax (benefit) expense, interest and other expense, net and depreciation and amortization. Adjusted EBITDA consists of EBITDA plus non-cash stock-based compensation, amortization of contract acquisition costs related to the initial adoption of Accounting Standards Codification Topic 606, Revenue from Contracts with Customers ("ASC 606"), restructuring and other related costs and impairment loss on investment securities.

This non-GAAP measure should not be considered a substitute for, or superior to, financial measures calculated in accordance with GAAP.

The following table presents the calculation of Adjusted EBITDA reconciled from “Net loss”:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2019			2018			2019			2018
	(in thousands)
Net loss	$	(6,035	)	$	(8,887	)	$	(11,754	)	$	(20,539	)
Provision for income tax expense	108			414			120			427
Interest and other expense, net	58			2,776			548			5,622
Depreciation and amortization	3,709			4,941			6,994			9,744
EBITDA	(2,160		)	(756		)	(4,092		)	(4,746		)
Stock-based compensation	1,236			3,427			2,806			6,538
Amortization of contract acquisition asset costs - ASC 606 initial adoption	255			420			512			846
Restructuring and other related costs	148			156			1,206			209
Impairment loss on investment securities	—			—			—			1,958
Adjusted EBITDA	$	(521	)	$	3,247		$	432		$	4,805

Item 3. Quantitative and Qualitative Disclosures About Market Risk

There have been no significant changes in our market risk exposures associated with foreign currency risk, inflation risk and interest rate risk for the six months ended June 30, 2019, as compared with those discussed in our annual report on Form 10-K for the fiscal year ended December 31, 2018.

The effective interest rate on our Revolver was 6.50% as of June 30, 2019. As of June 30, 2019, we did not have any borrowings outstanding on the Revolver, therefore a 1% increase in the effective interest rate would not increase interest expense. We may incur additional expense in future periods if we borrow on the Revolver.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of the end of the period covered by this report (the “Evaluation Date”).

In designing and evaluating our disclosure controls and procedures, management recognizes that any disclosure controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply its judgment in evaluating the benefits of possible controls and procedures relative to their costs.

25

Based on management’s evaluation, our chief executive officer and chief financial officer concluded that our disclosure controls and procedures are designed to, and are effective to, provide assurance at a reasonable level that the information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosures.

Changes in Internal Control Over Financial Reporting

There has not been any change in our internal control over financial reporting during the quarter covered by this report that materially affected, or is reasonably likely to materially affect our internal control over financial reporting.

26

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

For a discussion of legal proceedings in which we are involved, see Note 7 - Commitments and Contingencies" to the Consolidated Financial Statements in Item 1.

Item 1A. Risk Factors

A summary of factors which could affect results and cause results to differ materially from those expressed in any forward-looking statements made by us, or on our behalf, see “Risk Factors” in Part 1, Item 1A of our annual report on Form 10-K for the year ended December 31, 2018. There have been no material changes in the nature of these factors since December 31, 2018.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

None.

Item 6. Exhibits

Exhibit Number	Description of Document
31.1*	Certification of Principal Executive Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of Principal Financial Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of Principal Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*	Certification of Principal Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	Interactive data files (XBRL) pursuant to Rule 405 of Regulation S-T: (i) the Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018, (ii) the Consolidated Statements of Operations for the three and six months ended June 30, 2019 and 2018, (iii) the Consolidated Statements of Comprehensive Loss for the three and six months ended June 30, 2019 and 2018, (iv) Consolidated Statements of Stockholders’ Equity for the three and six months ended June 30, 2019 and 2018, (v) the Consolidated Statements of Cash Flows for the six months ended June 30, 2019 and 2018 and (vi) the Notes to Consolidated Financial Statements.

* Filed or Furnished herewith.

27

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		SERVICESOURCE INTERNATIONAL, INC. (Registrant)
Date:	August 7, 2019	By:	/s/ RICHARD G. WALKER
			Richard G. Walker Chief Financial Officer (Principal Financial and Accounting Officer)

28

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO RULE 13A-14(A) AND RULE 15D-14(A)

OF THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Gary B. Moore, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ServiceSource International, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls over financial reporting.

Date:	August 7, 2019	By:	/s/ GARY B. MOORE
			Name: Gary B. Moore
			Title: Chief Executive Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO RULE 13A-14(A) AND RULE 15D-14(A)

OF THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Richard G. Walker, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ServiceSource International, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls over financial reporting.

Date:	August 7, 2019	By:	/s/ RICHARD G. WALKER
			Name: Richard G. Walker
			Title: Chief Financial Officer (Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Based on my knowledge, I, Gary B. Moore, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of ServiceSource International, Inc. on Form 10-Q for the quarter ended June 30, 2019, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of ServiceSource International, Inc.

Date:	August 7, 2019	By:	/s/ GARY B. MOORE
			Name: Gary B. Moore
			Title: Chief Executive Officer (Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Based on my knowledge, I, Richard G. Walker, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of ServiceSource International, Inc. on Form 10-Q for the quarter ended June 30, 2019, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of ServiceSource International, Inc.

Date:	August 7, 2019	By:	/s/ RICHARD G. WALKER
			Name: Richard G. Walker
			Title: Chief Financial Officer (Principal Financial and Accounting Officer)

XML

Cover - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	001-35108
Entity Registrant Name	SERVICESOURCE INTERNATIONAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	81-0578975
Entity Address, Address Line One	707 17th Street,
Entity Address, Address Line Two	25th Floor
Entity Address, City or Town	Denver,
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80202
City Area Code	(720)
Local Phone Number	889-8500
Title of 12(b) Security	Common Stock, $0.0001 Par Value
Trading Symbol	SREV
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Small Business	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Common stock, shares outstanding		94,082,381
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001310114
Current Fiscal Year End Date	--12-31

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 25,652	$ 26,535
Accounts receivable, net	42,933	54,284
Prepaid expenses and other	6,704	5,653
Total current assets	75,289	86,472
Property and equipment, net	37,029	36,593
Contract acquisition costs	2,041	2,660
Right-of-use assets	33,190
Goodwill	6,334	6,334
Other assets	4,801	4,521
Total assets	158,684	136,580
Current liabilities:
Accounts payable	2,096	2,424
Accrued expenses	2,673	3,380
Accrued compensation and benefits	14,735	15,509
Operating lease liabilities	8,419
Other current liabilities	5,690	6,894
Total current liabilities	33,613	28,207
Operating lease liabilities, net of current portion	28,684
Other long-term liabilities	3,537	6,540
Total liabilities	65,834	34,747
Commitments and Contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value; 20,000 shares authorized and none issued and outstanding	0	0
Common stock; $0.0001 par value; 1,000,000 shares authorized; 94,210 shares issued and 94,089 shares outstanding as of June 30, 2019; 92,895 shares issued and 92,774 shares outstanding as of December 31, 2018	9	9
Treasury stock	(441)	(441)
Additional paid-in capital	372,201	369,246
Accumulated deficit	(279,137)	(267,383)
Accumulated other comprehensive income	218	402
Total stockholders’ equity	92,850	101,833
Total liabilities and stockholders’ equity	$ 158,684	$ 136,580

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	94,210,000	92,895,000
Common stock, shares outstanding (in shares)	94,089,000	92,774,000

XML

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net revenue	$ 52,358	$ 61,111	$ 107,869	$ 119,696
Cost of revenue	38,349	42,463	77,825	84,187
Gross profit	14,009	18,648	30,044	35,509
Operating expenses:
Sales and marketing	7,486	9,252	15,435	18,490
Research and development	1,274	1,780	2,537	3,296
General and administrative	10,970	13,157	21,952	26,046
Restructuring and other related costs	148	156	1,206
Restructuring charges				209
Total operating expenses	19,878	24,345	41,130	48,041
Loss from operations	(5,869)	(5,697)	(11,086)	(12,532)
Interest and other expense, net	(58)	(2,776)	(548)	(5,622)
Impairment loss on investment securities	0	0	0	(1,958)
Loss before income taxes	(5,927)	(8,473)	(11,634)	(20,112)
Provision for income tax expense	(108)	(414)	(120)	(427)
Net loss	$ (6,035)	$ (8,887)	$ (11,754)	$ (20,539)
Net loss per common share
Basic and diluted (in dollars per share)	$ (0.06)	$ (0.10)	$ (0.13)	$ (0.23)
Weighted-average common shares outstanding:
Basic and diluted (in shares)	93,712	91,323	93,315	90,843

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Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net loss	$ (6,035)	$ (8,887)	$ (11,754)	$ (20,539)
Other comprehensive (loss) income
Net change in available for sale debt securities	0	5	0	1,258
Foreign currency translation adjustments	(260)	(210)	(184)	64
Other comprehensive (loss) income	(260)	(205)	(184)	1,322
Comprehensive loss	(6,295)	(9,092)	(11,938)	(19,217)
Parent
Other comprehensive (loss) income
Unrealized gain (loss) on short-term investments	0	5	0	(700)
Reclassification adjustment for impairment loss included in net loss	$ 0	$ 0	$ 0	$ 1,958

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Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Shares/Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of ASC 606 - initial adoption	$ 3,709				$ 3,709
Stockholders' equity, adjusted balance	115,818	$ 8	$ (441)	$ 359,347	(242,498)	$ (598)
Beginning balance (in shares) at Dec. 31, 2017		90,380	(121)
Stockholders' equity, beginning balance at Dec. 31, 2017	112,109	$ 8	$ (441)	359,347	(246,207)	(598)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(11,652)				(11,652)
Other comprehensive income	1,527					1,527
Stock-based compensation	3,223			3,223
Issuance of common stock, restricted stock units (in shares)		84
Issuance of common stock, restricted stock units	0
Proceeds from the exercise of stock options and employee stock purchase plan (in shares)		119
Proceeds from the exercise of stock options and employee stock purchase plan	353			353
Net cash paid for payroll taxes on restricted stock unit releases	(53)			(53)
Ending balance (in shares) at Mar. 31, 2018		90,583	(121)
Stockholders' equity, ending balance at Mar. 31, 2018	109,216	$ 8	$ (441)	362,870	(254,150)	929
Beginning balance (in shares) at Dec. 31, 2017		90,380	(121)
Stockholders' equity, beginning balance at Dec. 31, 2017	112,109	$ 8	$ (441)	359,347	(246,207)	(598)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(20,539)
Ending balance (in shares) at Jun. 30, 2018		91,822	(121)
Stockholders' equity, ending balance at Jun. 30, 2018	103,379	$ 8	$ (441)	366,125	(263,037)	724
Beginning balance (in shares) at Mar. 31, 2018		90,583	(121)
Stockholders' equity, beginning balance at Mar. 31, 2018	109,216	$ 8	$ (441)	362,870	(254,150)	929
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(8,887)				(8,887)
Other comprehensive income	(205)					(205)
Stock-based compensation	3,525			3,525
Issuance of common stock, restricted stock units (in shares)		1,207
Issuance of common stock, restricted stock units	0
Proceeds from the exercise of stock options and employee stock purchase plan (in shares)		32
Proceeds from the exercise of stock options and employee stock purchase plan	94			94
Net cash paid for payroll taxes on restricted stock unit releases	(364)			(364)
Ending balance (in shares) at Jun. 30, 2018		91,822	(121)
Stockholders' equity, ending balance at Jun. 30, 2018	103,379	$ 8	$ (441)	366,125	(263,037)	724
Beginning balance (in shares) at Dec. 31, 2018		92,895	(121)
Stockholders' equity, beginning balance at Dec. 31, 2018	101,833	$ 9	$ (441)	369,246	(267,383)	402
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(5,719)				(5,719)
Other comprehensive income	76					76
Stock-based compensation	1,564			1,564
Issuance of common stock, restricted stock units (in shares)		229
Issuance of common stock, restricted stock units	0
Proceeds from the exercise of stock options and employee stock purchase plan (in shares)		139
Proceeds from the exercise of stock options and employee stock purchase plan	141			141
Ending balance (in shares) at Mar. 31, 2019		93,263	(121)
Stockholders' equity, ending balance at Mar. 31, 2019	97,895	$ 9	$ (441)	370,951	(273,102)	478
Beginning balance (in shares) at Dec. 31, 2018		92,895	(121)
Stockholders' equity, beginning balance at Dec. 31, 2018	101,833	$ 9	$ (441)	369,246	(267,383)	402
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(11,754)
Ending balance (in shares) at Jun. 30, 2019		94,210	(121)
Stockholders' equity, ending balance at Jun. 30, 2019	92,850	$ 9	$ (441)	372,201	(279,137)	218
Beginning balance (in shares) at Mar. 31, 2019		93,263	(121)
Stockholders' equity, beginning balance at Mar. 31, 2019	97,895	$ 9	$ (441)	370,951	(273,102)	478
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,035)				(6,035)
Other comprehensive income	(260)					(260)
Stock-based compensation	1,269			1,269
Issuance of common stock, restricted stock units (in shares)		947
Issuance of common stock, restricted stock units	0
Net cash paid for payroll taxes on restricted stock unit releases	(19)			(19)
Ending balance (in shares) at Jun. 30, 2019		94,210	(121)
Stockholders' equity, ending balance at Jun. 30, 2019	$ 92,850	$ 9	$ (441)	$ 372,201	$ (279,137)	$ 218

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net loss	$ (11,754)	$ (20,539)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	6,994	9,744
Amortization of debt discount and issuance costs	38	4,923
Amortization of contract acquisition costs	868	930
Amortization of premium on short-term investments	0	(1,197)
Amortization of right-of-use assets	4,725	0
Stock-based compensation	2,806	6,538
Restructuring and other related costs	1,166	482
Impairment loss on investment securities	0	1,958
Other	0	56
Accounts receivable, net	11,328	5,593
Prepaid expenses and other assets	(898)	(434)
Contract acquisition costs	(249)	(878)
Accounts payable	(263)	(2,515)
Accrued compensation and benefits	(1,934)	(1,647)
Operating lease liabilities	(4,767)
Accrued expenses	(797)	(1,811)
Other liabilities	(546)	1,199
Net cash provided by operating activities	6,717	2,402
Cash flows from investing activities:
Acquisition of property and equipment	(6,095)	(7,268)
Purchases of short-term investments	0	(480)
Sales of short-term investments	0	133,920
Maturities of short-term investments	0	4,240
Net cash (used in) provided by investing activities	(6,095)	130,412
Cash flows from financing activities:
Repayment on finance lease obligations	(421)	(156)
Proceeds from issuance of common stock	141	447
Payments related to minimum tax withholdings on restricted stock unit releases	(19)	(417)
Net cash used in financing activities	(299)	(126)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(156)	243
Net change in cash and cash equivalents and restricted cash	167	132,931
Cash and cash equivalents and restricted cash, beginning of period	27,779	52,633
Cash and cash equivalents and restricted cash, end of period	27,946	185,564
Supplemental disclosures of cash flow information:
Cash paid for interest	136	1,178
Supplemental disclosures of non-cash activities:
Acquisition of property and equipment accrued in accounts payable and accrued expenses	419	389
ASU 2014-09
Supplemental disclosures of non-cash activities:
Increase in contract acquisition costs and benefit to accumulated deficit related to adoption of ASC 606	0	3,346
Increase in prepaid expenses and other, other liabilities and benefit to accumulated deficit related to adoption of ASC 606	0	$ 363
ASU 2016-02
Supplemental disclosures of non-cash activities:
Increase in operating lease liabilities related to the adoption of ASC 842	41,760
Increase in right-of-use assets related to the adoption of ASC 842	39,183
Decrease in prepaids and other assets related to the adoption of ASC 842	(749)
Decrease in other liabilities related to the adoption of ASC 842	$ (3,308)

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The Company

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

The Company

The Company

ServiceSource International, Inc. is a global leader in outsourced, performance-based customer success and revenue growth solutions. Through our people, processes and technology, we grow and retain revenue on behalf of our clients — some of the world’s leading business-to-business companies — in more than 45 languages. Our solutions help our clients strengthen their customer relationships, drive improved customer adoption, expansion and retention and minimize churn. Our technology platform and best-practice business processes combined with our highly-trained, client-focused revenue delivery professionals and data from 20 years of operating experience enable us to provide our clients greater value for our customer success services than attained by our clients' in-house customer success teams.

“ServiceSource,” “the Company,” “we,” “us,” or “our”, as used herein, refer to ServiceSource International, Inc. and its wholly-owned subsidiaries, unless the context indicates otherwise.

The Company’s pay-for-performance model allows its clients to pay for the services through either flat-rate or variable commissions based on the revenue generated by the Company on their behalf. Fixed-fee arrangements are typically used in quick deployments to address discrete target areas of our clients’ needs. The Company also earns revenue through its professional services teams, who assist clients with data optimization. The Company’s corporate headquarters is located in Denver, Colorado. The Company has additional U.S. offices in California and Tennessee, and international offices in Bulgaria, Ireland, Japan, Malaysia, Philippines, Singapore and the United Kingdom.

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation

The accompanying interim unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and with the instructions to Form 10-Q and Article 10 of Regulation S-X for interim financial information. Accordingly, these financial statements do not include all the information required by GAAP for annual financial statements. The unaudited Consolidated Balance Sheet as of December 31, 2018 has been derived from the Company’s audited annual Consolidated Financial Statements included in our annual report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission on February 28, 2019. In the opinion of management, these Consolidated Financial Statements reflect all adjustments, including normal recurring adjustments, management considers necessary for a fair presentation of the Company’s financial position, operating results, and cash flows for the interim periods presented. These Consolidated Financial Statements and accompanying notes should be read in conjunction with our audited Consolidated Financial Statements and the notes thereto for the year ended December 31, 2018, included in our annual report on Form 10-K. Interim results are not necessarily indicative of results for the entire year.

Principles of Consolidation

The accompanying unaudited interim Consolidated Financial Statements include the accounts of ServiceSource International, Inc. and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of the Consolidated Financial Statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the reported amount of net revenue and expenses during the reporting period.

The Company’s significant accounting judgments and estimates include, but are not limited to: revenue recognition, the valuation and recognition of stock-based compensation, the recognition and measurement of current and deferred income tax assets and liabilities and uncertain tax positions, the provision for bad debts and impairment of goodwill and long-lived assets.

The Company bases its estimates and judgments on historical experience and on various assumptions that it believes are reasonable under the circumstances. However, future events are subject to change and estimates and judgments routinely require adjustment. Actual results and outcomes may differ from our estimates.

Reclassifications

Certain items on the Consolidated Statements of Cash Flows for the six months ended June 30, 2018 have been reclassified to conform to the current year presentation. These reclassifications did not affect the Company's Consolidated Balance Sheet as of December 31, 2018 or the Company's Consolidated Statements of Operations, Consolidated Statements of Comprehensive Loss or Consolidated Statements of Stockholders' Equity for the six months ended June 30, 2018.

New Accounting Standards Issued but Not yet Adopted

Financial Instruments - Credit Losses

In June 2016, the Financial Accounting Standard Board ("FASB") issued an Accounting Standard Update ("ASU") that amends the measurement of credit losses on financial instruments and requires measurement and recognition of expected versus incurred credit losses for financial assets held. In November 2018, the FASB issued an update to this ASU clarifying receivables arising from operating leases are accounted for using the lease guidance in Accounting Standards Codification Topic 842 Leases ("ASC 842"), and not as financial instruments. This ASU is effective for annual periods and interim periods for those annual periods beginning after December 15, 2019, with early adoption permitted. This standard will apply to the Company's trade receivables. Based on our current analysis the Company does not expect the adoption to have a material impact on its Consolidated Financial Statements as credit losses associated from trade receivables have historically been insignificant. The Company will adopt this standard effective January 1, 2020.

New Accounting Standards Adopted

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and will also require significant additional disclosures about the amount, timing, and uncertainty of cash flows from leases. Substantially all leases, including current operating leases, will be recognized by lessees on their balance sheet as a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. ASU 2016-02 initially required entities to adopt the standard using a modified retrospective transition method. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which provide transition practical expedients allowing companies to adopt the new standard with a cumulative effect adjustment as of the beginning of the year of adoption with prior year comparative financial information and disclosures remaining as previously reported. The Company adopted this standard effective January 1, 2019 and elected the package of practical expedients, accounting for leases with contractual terms less than 12 months as short-term leases and the transition relief option to apply legacy GAAP to periods prior to the standard’s effective date. Upon initial adoption of the standard, the Company recorded a $29.5 million right-of-use asset ("ROU") and a $32.1 million operating lease liability to the Consolidated Balance Sheets as of January 1, 2019.

Cloud Computing Implementation Costs

In August 2018, the FASB issued ASU 2016-13, Financial Instruments — Credit Losses (Topic 326) that provides guidance on the accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The accounting for the service element of a hosting arrangement that is a service contract is not affected by the new standard. This ASU is effective for annual periods and interim periods for those annual periods beginning after December 15, 2019, with early adoption permitted. The Company early adopted this standard effective January 1, 2019 and the effects of this standard were applied prospectively to eligible costs incurred on or after January 1, 2019. The adoption of this standard did not have a material impact on the Company’s Consolidated Financial Statements.

New Accounting Policies upon Adoption of ASC 842

Leases

At the inception of a contract, the Company determines whether the contract is or contains a lease. ROU assets represent the Company's right to use an underlying asset over the lease term and lease liabilities represent our remaining payment obligation under the lease. ROU assets and liabilities are recognized upon the lease commencement based on the present value of lease payments over the lease term. ROU assets are adjusted for any prepaid or accrued lease payments and unamortized lease incentives or initial direct costs. As most of the Company's leases do not provide an implicit rate, the Company uses an incremental borrowing rate, the variable interest rate on the revolving line of credit (the “Revolver”), and other information available at the lease commencement in determining the present value of lease payments. The Company's lease terms include options to extend or terminate the lease when it is reasonably certain it will exercise the option. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Lease expense and sublease income is recognized on a straight-line basis over the lease term.

The Company has lease agreements with lease and non-lease components, which are accounted for separately.  See “Note 6 — Leases” for additional information.

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Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The Company follows a three-tier fair value hierarchy, which is described in detail in the Company's Annual Report on Form 10-K for the year ended December 31, 2018. There were no transfers between levels during the six months ended June 30, 2019 and 2018.

Cash equivalents consist of highly liquid investments with original maturities of three months or less at the time of purchase.  Cash and cash equivalents are classified within Level 1.

Short-term investments consist of readily marketable debt securities with a remaining maturity of more than three months from the time of purchase. The Company liquidated its investment securities during the first half of 2018 to repay the $150.0 million convertible notes that matured August 1, 2018. Based on the Company’s decision to sell these investment securities, an other-than-temporary impairment occurred and a $2.0 million impairment loss was recorded in the Consolidated Statements of Operations for the six months ended June 30, 2018.

The Company recognized realized gains from the sale of available-for-sale securities of $0.03 million for the three and six months ended June 30, 2018 and losses from the sale of available-for-sale securities of $0.2 million for the three and six months ended June 30, 2018. Gains and losses on available-for-sale securities are recorded in "Interest and other expense, net" in the Consolidated Statements of Operations.

The Company had restricted cash in "Other assets" in the Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018 of $2.3 million and $1.2 million, respectively. Restricted cash is classified within Level 1.

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Other Current and Long-Term Liabilities

6 Months Ended

Jun. 30, 2019

Other Liabilities Disclosure [Abstract]

Other Current and Long-Term Liabilities

Other Current and Long-Term Liabilities

Other current liabilities were comprised of the following:

	June 30, 2019		December 31, 2018
	(in thousands)
Legal reserve	$	3,730	$	3,750
Finance lease obligations	959		954
Contract liability	549		873
Other liabilities	201		198
Employee stock purchase plan withholdings	251		384
Deferred rent	—		735
Total	$	5,690	$	6,894

Other long-term liabilities were comprised of the following:

	June 30, 2019		December 31, 2018
	(in thousands)
Asset retirement obligations	$	1,397	$	1,368
Finance lease obligations	1,142		1,510
Accrued restructuring costs	593		716
Deferred tax liability	289		268
Other accrued costs	116		105
Deferred rent	—		2,573
Total	$	3,537	$	6,540

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Debt

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Debt

Debt

Revolving Line of Credit

In July 2018, the Company entered into a $40.0 million senior secured Revolver that allows us to borrow against our domestic receivables as defined in the credit agreement. The Revolver matures July 2021 and bears interest at a variable rate per annum based on the greater of the prime rate, the Federal Funds rate plus 0.50% or the one-month LIBOR rate plus 1.00%, plus, in each case, a margin of 1.00% for base rate borrowings or 2.00% for Eurodollar borrowings. As of June 30, 2019, the Company did not have any borrowings outstanding on the Revolver and therefore has no future obligations.

The obligations under the credit agreement are secured by substantially all assets of the borrowers and certain of their subsidiaries, including pledges of equity in certain of the Company’s subsidiaries. The Revolver has covenants with which the Company was in compliance as of June 30, 2019 and December 31, 2018.

Deferred Debt Issuance Costs

Discounts and premiums to the principal amounts are included in the carrying value of debt and amortized to "Interest and other expense, net" over the remaining life of the underlying debt. Unamortized debt issuance costs related to the Revolver were $0.1 million and $0.2 million as of June 30, 2019 and December 31, 2018, respectively. The amortization of all premiums and discounts related to the convertible notes that matured August 2018 was $2.3 million and $4.5 million for the three and six months ended June 30, 2018, respectively.

Interest expense related to the amortization of debt issuance costs, interest expense associated with the Company's debt obligations and accretion of the Company's debt discount was $0.04 million and $3.1 million for the three months ended June 30, 2019 and 2018, respectively, and $0.1 million and $6.0 million for the six months ended June 30, 2019 and 2018, respectively.

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Leases

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Leases

Leases

The Company has operating leases for office space and finance leases for certain equipment under non-cancelable agreements with various expiration dates through April 2030. Certain office leases include the option to extend the term between three to seven years and certain office leases include the option to terminate the lease upon written notice within one to eight years after lease commencement. Leases with an initial term of 12 months or less are not recorded on the balance sheet.

In January 2018, the Company entered into a sublease with a third-party for the San Francisco office space through the remaining term of the lease of November 30, 2022. The Company recognizes rent expense and sublease income on a straight-line basis over the lease period and accrues for rent expense and sublease income incurred but not paid.

Rent expense for the three and six months ended June 30, 2018 was $3.1 million and $5.8 million, respectively. Rent income for the three and six months ended June 30, 2018 was $0.5 million and $0.6 million, respectively.

Supplemental income statement information related to leases was as follows:

	For the Three Months Ended June 30, 2019			For the Six Months Ended June 30, 2019
	(in thousands)
Operating lease cost	$	3,116		$	5,997
Finance lease cost:
Amortization of leased assets	171			322
Interest on lease liabilities	45			86
Total finance lease cost	216			408
Sublease income	(468		)	(936		)
Net lease cost	$	2,864		$	5,469

Supplemental balance sheet information related to leases was as follows:

	June 30, 2019
	(in thousands)
Operating leases:
Right-of-use assets	$	33,190
Operating lease liabilities	$	8,419
Operating lease liabilities, net of current portion	28,684
Total operating lease liabilities	$	37,103
Finance leases:
Property and equipment	$	3,479
Accumulated depreciation	(1,463		)
Property and equipment, net	$	2,016
Other current liabilities	$	959
Other long-term liabilities	1,142
Total finance lease liabilities	$	2,101

Lease term and discount rate information related to leases was as follows:

	June 30, 2019
Weighted-average remaining lease term (in years):
Operating lease	5.0
Finance lease	2.3
Weighted-average discount rate:
Operating lease	6.5	%
Finance lease	8.2	%

Maturities of lease liabilities were as follows as of June 30, 2019:

	Operating Leases			Operating Sublease			Finance Leases
	(in thousands)
Remainder of 2019	$	4,882		$	(942	)	$	555
2020	11,030			(1,932		)	1,040
2021	10,562			(1,989		)	633
2022	7,126			(1,878		)	64
2023	2,218			—			—
Thereafter	8,769			—			—
Total lease payments	44,587			(6,741		)	2,292
Less: interest	(6,828		)	—			(191		)
Less: tenant improvements reimbursement	(656		)	—			—
Total	$	37,103		$	(6,741	)	$	2,101

Subsequent to June 30, 2019, the Company entered into a sublease agreement with a third party for the San Francisco office space through the remaining term of the lease, November 30, 2023, with total sublease income of approximately $2.8 million.

Leases

Leases

The Company has operating leases for office space and finance leases for certain equipment under non-cancelable agreements with various expiration dates through April 2030. Certain office leases include the option to extend the term between three to seven years and certain office leases include the option to terminate the lease upon written notice within one to eight years after lease commencement. Leases with an initial term of 12 months or less are not recorded on the balance sheet.

In January 2018, the Company entered into a sublease with a third-party for the San Francisco office space through the remaining term of the lease of November 30, 2022. The Company recognizes rent expense and sublease income on a straight-line basis over the lease period and accrues for rent expense and sublease income incurred but not paid.

Rent expense for the three and six months ended June 30, 2018 was $3.1 million and $5.8 million, respectively. Rent income for the three and six months ended June 30, 2018 was $0.5 million and $0.6 million, respectively.

Supplemental income statement information related to leases was as follows:

	For the Three Months Ended June 30, 2019			For the Six Months Ended June 30, 2019
	(in thousands)
Operating lease cost	$	3,116		$	5,997
Finance lease cost:
Amortization of leased assets	171			322
Interest on lease liabilities	45			86
Total finance lease cost	216			408
Sublease income	(468		)	(936		)
Net lease cost	$	2,864		$	5,469

Supplemental balance sheet information related to leases was as follows:

	June 30, 2019
	(in thousands)
Operating leases:
Right-of-use assets	$	33,190
Operating lease liabilities	$	8,419
Operating lease liabilities, net of current portion	28,684
Total operating lease liabilities	$	37,103
Finance leases:
Property and equipment	$	3,479
Accumulated depreciation	(1,463		)
Property and equipment, net	$	2,016
Other current liabilities	$	959
Other long-term liabilities	1,142
Total finance lease liabilities	$	2,101

Lease term and discount rate information related to leases was as follows:

	June 30, 2019
Weighted-average remaining lease term (in years):
Operating lease	5.0
Finance lease	2.3
Weighted-average discount rate:
Operating lease	6.5	%
Finance lease	8.2	%

Maturities of lease liabilities were as follows as of June 30, 2019:

	Operating Leases			Operating Sublease			Finance Leases
	(in thousands)
Remainder of 2019	$	4,882		$	(942	)	$	555
2020	11,030			(1,932		)	1,040
2021	10,562			(1,989		)	633
2022	7,126			(1,878		)	64
2023	2,218			—			—
Thereafter	8,769			—			—
Total lease payments	44,587			(6,741		)	2,292
Less: interest	(6,828		)	—			(191		)
Less: tenant improvements reimbursement	(656		)	—			—
Total	$	37,103		$	(6,741	)	$	2,101

Subsequent to June 30, 2019, the Company entered into a sublease agreement with a third party for the San Francisco office space through the remaining term of the lease, November 30, 2023, with total sublease income of approximately $2.8 million.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Letter of Credit

In connection with two of our leased facilities, the Company is required to maintain two letters of credit totaling $2.3 million. The letters of credit are secured by $2.3 million of cash in money market accounts, which are classified as restricted cash in "Other assets" in our Consolidated Balance Sheets.

Litigation

The Company is subject to various legal proceedings and claims arising in the ordinary course of our business, including the cases discussed below.  Although the results of litigation and claims cannot be predicted with certainty, the Company is currently not aware of any litigation or threats of litigation in which the final outcome could have a material adverse effect on our business, operating results, financial position or cash flows. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources and other factors. The Company records a contingent liability when it is probable that a loss has been incurred and the amount is reasonably estimable in accordance with accounting for contingencies. As of June 30, 2019 and December 31, 2018, the Company accrued a $3.7 million and $3.8 million, respectively, reserve relating to our potential liability for currently pending disputes, reflected in "Other current liabilities" in the Consolidated Balance Sheets.

On August 23, 2016, the United States District Court for the Middle District of Tennessee granted conditional class certification in a lawsuit originally filed on September 21, 2015 by three former senior sales representatives. The lawsuit, Sarah Patton, et al v. ServiceSource Delaware, Inc., asserts a claim under the Fair Labor Standards Act alleging that certain non-exempt employees in our Nashville location were not paid for all hours worked and were not properly paid for overtime hours worked.  The complaint also asserts claims under Tennessee state law for breach of contract and unjust enrichment; and, on September 28, 2018, the plaintiffs filed a motion to certify the state law breach of contract and unjust enrichment claims as a class action.  A settlement of all claims has been reached and the settlement amounts will be paid in phases. The Company anticipates settlement payments will be completed by the end of 2019.

Non-cancelable Service Contract Commitments

Future minimum payments under non-cancelable service contract commitments were as follows:

	June 30, 2019
	(in thousands)
Remainder of 2019	$	3,886
2020	9,091
2021	7,986
2022	7,431
2023	8,237
Thereafter	—
Total	$	36,631

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Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs

Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs

The following tables present the disaggregation of revenue from contracts with our clients:

Revenue by Performance Obligation

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Professional services	$	442	$	692	$	825	$	2,699
Selling services	51,916		60,419		107,044		116,997
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Revenue by Geography

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
APJ	$	9,345	$	9,255	$	18,019	$	16,849
EMEA	13,418		14,669		27,054		30,191
NALA	29,595		37,187		62,796		72,656
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Revenue by Contract Pricing

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Fixed consideration	$	18,828	$	20,683	$	38,557	$	38,425
Variable consideration	33,530		40,428		69,312		81,271
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Contract Balances

Once the Company obtains a client contract, the timing of satisfying performance obligations and the receipt of client consideration can be different and will give rise to contract assets and contract liabilities. As of June 30, 2019 and December 31, 2018, the contract asset balance totaled $0.1 million and $0.2 million, respectively, and the contract liability balance totaled $0.5 million and $0.9 million, respectively. Contract assets and contract liabilities are reflected in "Prepaid expenses and other", "Other assets" and "Other current liabilities" in the Consolidated Balance Sheets.

Transaction Price Allocated to Remaining Performance Obligations

The Company maintains contracts with fixed consideration that are generally with long-standing client relationships and typically renew annually. Assuming none of the Company’s current contracts with fixed consideration are renewed, we estimate receiving approximately $42.5 million in future selling services fixed consideration as of June 30, 2019. Professional services revenues from fixed consideration are based on proportional performance which is typically concluded within 90 days of contract execution. The Company typically bills professional services upfront upon obtaining a client contract. As of June 30, 2019, we estimate $0.2 million in professional services fixed consideration revenue to be recognized through the remainder of 2019.

Contract Acquisition Costs

Certain commissions paid to the Company's sales team upon obtaining a client contract are incremental and recoverable, and capitalized as contract acquisition costs. Under the transition guidance, the Company recorded a $3.3 million contract acquisition asset and corresponding offset to the opening accumulated deficit balance related to previously expensed sales commissions. The Company expensed $1.5 million of the $3.3 million of contract acquisition asset during 2018 and will expense the remainder of the asset over the next five years as follows: $0.4 million remaining in 2019, $0.6 million in 2020 and $0.3 million in 2021 and beyond. The Company recorded $0.2 million and $0.5 million, respectively, in amortization expense for the three and six months ended June 30, 2019 and $0.4 million and $0.8 million, respectively, of amortization for the three and six months ended June 30, 2018 related to amounts capitalized upon the adoption of ASC 606.

Subsequent to the adoption of ASC 606, the Company capitalized an additional $0.2 million and $1.1 million as of June 30, 2019 and December 31, 2018, respectively, of sales commissions as contract acquisition costs related to contracts obtained during the period. The Company recorded amortization expense of $0.3 million and $0.4 million, respectively, for the three and six months ended June 30, 2019 and $0.1 million for the three and six months ended June 30, 2018 related to the amounts capitalized. As of June 30, 2019, the weighted-average remaining amortization period related to these capitalized costs was approximately 2.4 years.

Impairment recognized on contract costs was insignificant for the three and six months ended June 30, 2019 and 2018.

Applying the practical expedient for amortization periods one year or less, the Company recognizes any incremental costs of obtaining contracts as expense when the cost is incurred. These costs are included in "Sales and marketing" in the Consolidated Statements of Operations.

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Stockholders' Equity

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Stockholders' Equity

Stockholders' Equity

Stock-Based Compensation Expense

The following table presents stock-based compensation expense as allocated within the Company's Consolidated Statements of Operations:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Cost of revenue	$	129	$	279	$	288	$	558
Sales and marketing	429		833		872		1,719
Research and development	18		58		12		122
General and administrative	660		2,257		1,634		4,139
Total stock-based compensation	$	1,236	$	3,427	$	2,806	$	6,538

The above table does not include capitalized stock-based compensation related to internal-use software of $0.03 million for the three and six months ended June 30, 2019 and $0.1 million and $0.2 million for the three and six months ended June 30, 2018, respectively.

Stock Awards Issued to Employees

The following table summarizes information related to stock options:

	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life (Years)	Intrinsic Value
	(in thousands)					(in thousands)
Outstanding as of December 31, 2018	7,516		$	3.34		$	—
Granted	182		$	1.03
Expired and/or forfeited	(3,589	)	$	4.17
Outstanding as of June 30, 2019	4,109		$	2.51	7.89	$	—
Exercisable as of June 30, 2019	1,232		$	5.17	4.46	$	—

The weighted-average fair value of options granted during the six months ended June 30, 2019 and 2018 was $0.51 and $1.84, respectively. As of June 30, 2019, there was $1.7 million of unrecognized compensation expense related to stock options granted under the 2011 Equity Incentive Plan (the "2011 Plan"), which is expected to be recognized over a weighted-average period of 2.7 years.

The following table summarizes information related to restricted stock units and performance-based restricted stock units:

	Units		Weighted-Average Grant Date Fair Value
	(in thousands)
Non-vested as of December 31, 2018	5,669		$	3.29
Granted	325		$	1.03
Vested(1)	(1,195	)	$	3.78
Forfeited	(995	)	$	3.79
Non-vested as of June 30, 2019	3,804		$	2.81

⁽¹⁾ 1,175 thousand shares of common stock were issued for restricted stock units vested and the remaining 20 thousand shares were withheld for taxes.

As of June 30, 2019, there was $8.6 million of unrecognized compensation expense related to non-vested restricted stock units and performance-based restricted stock units granted under the 2011 Plan, which is expected to be recognized over a weighted-average period of 2.4 years.

Potential shares of common stock that are not included in the determination of diluted net loss per share because they are anti-dilutive for the periods presented consist of stock options, unvested restricted stock and shares to be purchased under our 2011 Employee Stock Purchase Plan. The Company excluded from diluted earnings per share the weighted-average common share equivalents related to 7.6 million and 5.1 million shares for the three months ended June 30, 2019 and 2018, respectively, and 8.9 million and 5.7 million shares for the six months ended June 30, 2019 and 2018, respectively, because their effect would have been anti-dilutive.

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Income Taxes

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company is subject to taxation in the U.S. and various state and foreign jurisdictions. Earnings from non-U.S. activities are subject to local country income tax. The Company computes its quarterly income tax provision by using a forecasted annual effective tax rate and adjusts for any discrete items arising during the quarter. The primary difference between the effective tax rate and the federal statutory tax rate relates to the valuation allowances on the Company’s net operating losses and foreign tax rate differences. The "Provision for income tax expense" in the Consolidated Statements of Operations primarily consist of income and withholding taxes for foreign and state jurisdictions where the Company has profitable operations, as well as valuation allowance adjustments for certain U.S. tax jurisdictions. No tax benefit was provided for losses incurred in the U.S., Ireland and Singapore because those losses are offset by a full valuation allowance. The tax years 2011 through 2019 generally remain subject to examination by federal, state and foreign tax authorities.

The gross amount of the Company’s unrecognized tax benefits was $1.0 million and $0.9 million as of June 30, 2019 and December 31, 2018, respectively, none of which, if recognized, would affect the Company’s effective tax rate. The Company does not expect its unrecognized tax benefits to change significantly over the next 12 months. The Company recognizes interest and penalties accrued related to unrecognized tax benefits in income tax expense. During the three and six months ended June 30, 2019 and 2018, interest and penalties recognized were insignificant.

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Restructuring and Other Related Costs

6 Months Ended

Jun. 30, 2019

Restructuring and Related Activities [Abstract]

Restructuring and Other Related Costs

Restructuring and Other Related Costs

The Company has undergone restructuring efforts to better align its cost structure with business and market conditions. These restructuring efforts included severance and other employee costs, lease and other contract termination costs and asset impairments. Severance and other employee costs include severance payments, related employee benefits, stock-based compensation related to the accelerated vesting of certain equity awards and employee-related legal fees. Lease and other contract termination costs include charges related to lease consolidation and abandonment of spaces no longer utilized and the cancellation of certain contracts with outside vendors. Asset impairments include charges related to leasehold improvements and furniture in spaces vacated or no longer in use. The restructuring plans and future cash outlays are recorded in "Accrued expenses", "Accrued compensation and benefits" and "Other long-term liabilities" in our Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018.

In February 2019, the Company announced a restructuring effort to better align its cost structure with current business and market conditions, resulting in a headcount reduction. The Company recognized charges related to this restructuring effort of $0.1 million and $1.2 million for the three and six months ended June 30, 2019, respectively, and expects to incur additional costs through September 2019.

The following table presents a reconciliation of the beginning and ending fair value liability balance related to the February 2019 restructuring effort:

	Severance and Other Employee Costs
	(in thousands)
Balance as of January 1, 2019	$	—
Restructuring and other related costs	1,167
Cash paid	(1,117		)
Balance as of June 30, 2019	$	50

In May 2017, the Company announced a restructuring effort to better align its cost structure with current business and market conditions, including a headcount reduction and the reduction of office space in four locations. The Company recognized charges related to this restructuring effort of $0.04 million for the three and six months ended June 30, 2019 and $0.2 million for the three and six months ended June 30, 2018. The Company does not expect to incur additional restructuring charges related to the May 2017 restructuring as of June 30, 2019.

The following table presents a reconciliation of the beginning and ending fair value liability balance related to the May 2017 restructuring effort:

	Severance and Other Employee Costs			Lease and Other Contract Termination Costs			Asset Impairments			Total
	(in thousands)
Balance as of January 1, 2017	$	—		$	—		$	—		$	—
Restructuring and other related costs	3,483			2,939			886			7,308
Cash paid	(3,060		)	(1,185		)	—			(4,245		)
Change in estimates and non-cash charges	—			—			(886		)	(886		)
Acceleration of stock-based compensation expense in additional paid-in capital	(352		)	—			—			(352		)
Balance as of December 31, 2017	71			1,754			—			1,825
Restructuring and other related costs	120			89			—			209
Cash paid	(188		)	(1,133		)	—			(1,321		)
Change in estimates and non-cash charges	(3		)	252			—			249
Balance as of December 31, 2018	—			962			—			962
Restructuring and other related costs	—			39						39
Cash paid	—			(93		)	—			(93		)
Change in estimates and non-cash charges	—			(40		)	—			(40		)
Balance as of June 30, 2019	$	—		$	868		$	—		$	868

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying interim unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and with the instructions to Form 10-Q and Article 10 of Regulation S-X for interim financial information. Accordingly, these financial statements do not include all the information required by GAAP for annual financial statements. The unaudited Consolidated Balance Sheet as of December 31, 2018 has been derived from the Company’s audited annual Consolidated Financial Statements included in our annual report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission on February 28, 2019. In the opinion of management, these Consolidated Financial Statements reflect all adjustments, including normal recurring adjustments, management considers necessary for a fair presentation of the Company’s financial position, operating results, and cash flows for the interim periods presented. These Consolidated Financial Statements and accompanying notes should be read in conjunction with our audited Consolidated Financial Statements and the notes thereto for the year ended December 31, 2018, included in our annual report on Form 10-K. Interim results are not necessarily indicative of results for the entire year.

Principles of Consolidation

Principles of Consolidation

The accompanying unaudited interim Consolidated Financial Statements include the accounts of ServiceSource International, Inc. and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

Use of Estimates

The preparation of the Consolidated Financial Statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the reported amount of net revenue and expenses during the reporting period.

The Company’s significant accounting judgments and estimates include, but are not limited to: revenue recognition, the valuation and recognition of stock-based compensation, the recognition and measurement of current and deferred income tax assets and liabilities and uncertain tax positions, the provision for bad debts and impairment of goodwill and long-lived assets.

The Company bases its estimates and judgments on historical experience and on various assumptions that it believes are reasonable under the circumstances. However, future events are subject to change and estimates and judgments routinely require adjustment. Actual results and outcomes may differ from our estimates.

Reclassifications

Reclassifications

Certain items on the Consolidated Statements of Cash Flows for the six months ended June 30, 2018 have been reclassified to conform to the current year presentation. These reclassifications did not affect the Company's Consolidated Balance Sheet as of December 31, 2018 or the Company's Consolidated Statements of Operations, Consolidated Statements of Comprehensive Loss or Consolidated Statements of Stockholders' Equity for the six months ended June 30, 2018.

New Accounting Standards Issued but Not yet Adopted and New Accounting Standards Adopted

New Accounting Standards Issued but Not yet Adopted

Financial Instruments - Credit Losses

In June 2016, the Financial Accounting Standard Board ("FASB") issued an Accounting Standard Update ("ASU") that amends the measurement of credit losses on financial instruments and requires measurement and recognition of expected versus incurred credit losses for financial assets held. In November 2018, the FASB issued an update to this ASU clarifying receivables arising from operating leases are accounted for using the lease guidance in Accounting Standards Codification Topic 842 Leases ("ASC 842"), and not as financial instruments. This ASU is effective for annual periods and interim periods for those annual periods beginning after December 15, 2019, with early adoption permitted. This standard will apply to the Company's trade receivables. Based on our current analysis the Company does not expect the adoption to have a material impact on its Consolidated Financial Statements as credit losses associated from trade receivables have historically been insignificant. The Company will adopt this standard effective January 1, 2020.

New Accounting Standards Adopted

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and will also require significant additional disclosures about the amount, timing, and uncertainty of cash flows from leases. Substantially all leases, including current operating leases, will be recognized by lessees on their balance sheet as a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. ASU 2016-02 initially required entities to adopt the standard using a modified retrospective transition method. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which provide transition practical expedients allowing companies to adopt the new standard with a cumulative effect adjustment as of the beginning of the year of adoption with prior year comparative financial information and disclosures remaining as previously reported. The Company adopted this standard effective January 1, 2019 and elected the package of practical expedients, accounting for leases with contractual terms less than 12 months as short-term leases and the transition relief option to apply legacy GAAP to periods prior to the standard’s effective date. Upon initial adoption of the standard, the Company recorded a $29.5 million right-of-use asset ("ROU") and a $32.1 million operating lease liability to the Consolidated Balance Sheets as of January 1, 2019.

Cloud Computing Implementation Costs

In August 2018, the FASB issued ASU 2016-13, Financial Instruments — Credit Losses (Topic 326) that provides guidance on the accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The accounting for the service element of a hosting arrangement that is a service contract is not affected by the new standard. This ASU is effective for annual periods and interim periods for those annual periods beginning after December 15, 2019, with early adoption permitted. The Company early adopted this standard effective January 1, 2019 and the effects of this standard were applied prospectively to eligible costs incurred on or after January 1, 2019. The adoption of this standard did not have a material impact on the Company’s Consolidated Financial Statements.

Leases

Leases

At the inception of a contract, the Company determines whether the contract is or contains a lease. ROU assets represent the Company's right to use an underlying asset over the lease term and lease liabilities represent our remaining payment obligation under the lease. ROU assets and liabilities are recognized upon the lease commencement based on the present value of lease payments over the lease term. ROU assets are adjusted for any prepaid or accrued lease payments and unamortized lease incentives or initial direct costs. As most of the Company's leases do not provide an implicit rate, the Company uses an incremental borrowing rate, the variable interest rate on the revolving line of credit (the “Revolver”), and other information available at the lease commencement in determining the present value of lease payments. The Company's lease terms include options to extend or terminate the lease when it is reasonably certain it will exercise the option. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Lease expense and sublease income is recognized on a straight-line basis over the lease term.

The Company has lease agreements with lease and non-lease components, which are accounted for separately.

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Other Current and Long-Term Liabilities (Tables)

6 Months Ended

Jun. 30, 2019

Other Liabilities Disclosure [Abstract]

Schedule of Other Current Liabilities

Other current liabilities were comprised of the following:

	June 30, 2019		December 31, 2018
	(in thousands)
Legal reserve	$	3,730	$	3,750
Finance lease obligations	959		954
Contract liability	549		873
Other liabilities	201		198
Employee stock purchase plan withholdings	251		384
Deferred rent	—		735
Total	$	5,690	$	6,894

Schedule of Other Long-Term Liabilities

Other long-term liabilities were comprised of the following:

	June 30, 2019		December 31, 2018
	(in thousands)
Asset retirement obligations	$	1,397	$	1,368
Finance lease obligations	1,142		1,510
Accrued restructuring costs	593		716
Deferred tax liability	289		268
Other accrued costs	116		105
Deferred rent	—		2,573
Total	$	3,537	$	6,540

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Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Summary of supplemental income statement information and other information

Supplemental income statement information related to leases was as follows:

	For the Three Months Ended June 30, 2019			For the Six Months Ended June 30, 2019
	(in thousands)
Operating lease cost	$	3,116		$	5,997
Finance lease cost:
Amortization of leased assets	171			322
Interest on lease liabilities	45			86
Total finance lease cost	216			408
Sublease income	(468		)	(936		)
Net lease cost	$	2,864		$	5,469

Lease term and discount rate information related to leases was as follows:

	June 30, 2019
Weighted-average remaining lease term (in years):
Operating lease	5.0
Finance lease	2.3
Weighted-average discount rate:
Operating lease	6.5	%
Finance lease	8.2	%

Summary of supplemental balance sheet information

Supplemental balance sheet information related to leases was as follows:

	June 30, 2019
	(in thousands)
Operating leases:
Right-of-use assets	$	33,190
Operating lease liabilities	$	8,419
Operating lease liabilities, net of current portion	28,684
Total operating lease liabilities	$	37,103
Finance leases:
Property and equipment	$	3,479
Accumulated depreciation	(1,463		)
Property and equipment, net	$	2,016
Other current liabilities	$	959
Other long-term liabilities	1,142
Total finance lease liabilities	$	2,101

Summary of maturities of lease liabilities

Maturities of lease liabilities were as follows as of June 30, 2019:

	Operating Leases			Operating Sublease			Finance Leases
	(in thousands)
Remainder of 2019	$	4,882		$	(942	)	$	555
2020	11,030			(1,932		)	1,040
2021	10,562			(1,989		)	633
2022	7,126			(1,878		)	64
2023	2,218			—			—
Thereafter	8,769			—			—
Total lease payments	44,587			(6,741		)	2,292
Less: interest	(6,828		)	—			(191		)
Less: tenant improvements reimbursement	(656		)	—			—
Total	$	37,103		$	(6,741	)	$	2,101

Summary of maturities of lease liabilities

Maturities of lease liabilities were as follows as of June 30, 2019:

	Operating Leases			Operating Sublease			Finance Leases
	(in thousands)
Remainder of 2019	$	4,882		$	(942	)	$	555
2020	11,030			(1,932		)	1,040
2021	10,562			(1,989		)	633
2022	7,126			(1,878		)	64
2023	2,218			—			—
Thereafter	8,769			—			—
Total lease payments	44,587			(6,741		)	2,292
Less: interest	(6,828		)	—			(191		)
Less: tenant improvements reimbursement	(656		)	—			—
Total	$	37,103		$	(6,741	)	$	2,101

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Payments Under Non-cancelable Service Contract Commitments

Future minimum payments under non-cancelable service contract commitments were as follows:

	June 30, 2019
	(in thousands)
Remainder of 2019	$	3,886
2020	9,091
2021	7,986
2022	7,431
2023	8,237
Thereafter	—
Total	$	36,631

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Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue From Contracts with Clients

The following tables present the disaggregation of revenue from contracts with our clients:

Revenue by Performance Obligation

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Professional services	$	442	$	692	$	825	$	2,699
Selling services	51,916		60,419		107,044		116,997
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Revenue by Geography

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
APJ	$	9,345	$	9,255	$	18,019	$	16,849
EMEA	13,418		14,669		27,054		30,191
NALA	29,595		37,187		62,796		72,656
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

Revenue by Contract Pricing

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Fixed consideration	$	18,828	$	20,683	$	38,557	$	38,425
Variable consideration	33,530		40,428		69,312		81,271
Total revenue	$	52,358	$	61,111	$	107,869	$	119,696

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Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Summary of Stock-Based Compensation Expense

The following table presents stock-based compensation expense as allocated within the Company's Consolidated Statements of Operations:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Cost of revenue	$	129	$	279	$	288	$	558
Sales and marketing	429		833		872		1,719
Research and development	18		58		12		122
General and administrative	660		2,257		1,634		4,139
Total stock-based compensation	$	1,236	$	3,427	$	2,806	$	6,538

Summary of Option and Restricted Stock Activity

The following table summarizes information related to stock options:

	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life (Years)	Intrinsic Value
	(in thousands)					(in thousands)
Outstanding as of December 31, 2018	7,516		$	3.34		$	—
Granted	182		$	1.03
Expired and/or forfeited	(3,589	)	$	4.17
Outstanding as of June 30, 2019	4,109		$	2.51	7.89	$	—
Exercisable as of June 30, 2019	1,232		$	5.17	4.46	$	—

Summary of Additional Information Concerning Vested RSUs and PSUs

The following table summarizes information related to restricted stock units and performance-based restricted stock units:

	Units		Weighted-Average Grant Date Fair Value
	(in thousands)
Non-vested as of December 31, 2018	5,669		$	3.29
Granted	325		$	1.03
Vested(1)	(1,195	)	$	3.78
Forfeited	(995	)	$	3.79
Non-vested as of June 30, 2019	3,804		$	2.81

⁽¹⁾ 1,175 thousand shares of common stock were issued for restricted stock units vested and the remaining 20 thousand shares were withheld for taxes.

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Restructuring and Other Related Costs (Tables)

6 Months Ended

Jun. 30, 2019

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Other Reserve Activities

The following table presents a reconciliation of the beginning and ending fair value liability balance related to the May 2017 restructuring effort:

	Severance and Other Employee Costs			Lease and Other Contract Termination Costs			Asset Impairments			Total
	(in thousands)
Balance as of January 1, 2017	$	—		$	—		$	—		$	—
Restructuring and other related costs	3,483			2,939			886			7,308
Cash paid	(3,060		)	(1,185		)	—			(4,245		)
Change in estimates and non-cash charges	—			—			(886		)	(886		)
Acceleration of stock-based compensation expense in additional paid-in capital	(352		)	—			—			(352		)
Balance as of December 31, 2017	71			1,754			—			1,825
Restructuring and other related costs	120			89			—			209
Cash paid	(188		)	(1,133		)	—			(1,321		)
Change in estimates and non-cash charges	(3		)	252			—			249
Balance as of December 31, 2018	—			962			—			962
Restructuring and other related costs	—			39						39
Cash paid	—			(93		)	—			(93		)
Change in estimates and non-cash charges	—			(40		)	—			(40		)
Balance as of June 30, 2019	$	—		$	868		$	—		$	868

The following table presents a reconciliation of the beginning and ending fair value liability balance related to the February 2019 restructuring effort:

	Severance and Other Employee Costs
	(in thousands)
Balance as of January 1, 2019	$	—
Restructuring and other related costs	1,167
Cash paid	(1,117		)
Balance as of June 30, 2019	$	50

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The Company (Details)	6 Months Ended
	Jun. 30, 2019 language
Accounting Policies [Abstract]
Number of languages (more than)	45
Years of operating experience	20 years

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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 33,190
Operating lease liability	$ (37,103)
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets		$ 29,500
Operating lease liability		$ (32,100)

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Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Aug. 01, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other-than-temporary impairment loss recorded in earnings		$ 0	$ 0	$ 0	$ 1,958
Realized gains			30		30
Realized losses			$ 200		$ 200
Other Assets | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash		$ 2,300		$ 2,300		$ 1,200
Senior Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repayments of convertible debt	$ 150,000

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Other Current and Long-Term Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Legal reserve	$ 3,730	$ 3,750
Finance lease obligations	959
Finance lease obligations		954
Contract liability	549	873
Other liabilities	201	198
Employee stock purchase plan withholdings	251	384
Deferred rent		735
Total	$ 5,690	$ 6,894

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Other Current and Long-Term Liabilities - Schedule of Long-Term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Asset retirement obligations	$ 1,397	$ 1,368
Finance lease obligations	1,142
Finance lease obligations		1,510
Accrued restructuring costs	593	716
Deferred tax liability	289	268
Other accrued costs	116	105
Deferred rent		2,573
Total	$ 3,537	$ 6,540

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Debt - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Deferred loan costs		$ 100,000		$ 100,000		$ 200,000
Amortization of premiums and discounts			$ 2,300,000		$ 4,500,000
Interest expense		$ 40,000.00	$ 3,100,000	$ 100,000	$ 6,000,000.0
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 40,000,000.0
Federal Funds rate | Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Basis spread of interest rate	0.50%
LIBOR | Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Basis spread of interest rate	1.00%
Base rate | Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Basis spread of interest rate	1.00%
Eurodollar | Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Basis spread of interest rate	2.00%

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Leases - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Aug. 07, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Lessee, Lease, Description [Line Items]
Rent expense			$ 3,100		$ 5,800
Sublease income		$ (468)	$ (500)	$ (936)	$ (600)
Minimum
Lessee, Lease, Description [Line Items]
Option to extend, term (in years)		3 years		3 years
Option to terminate, term (in years)				1 year
Maximum
Lessee, Lease, Description [Line Items]
Option to extend, term (in years)		7 years		7 years
Option to terminate, term (in years)				8 years
Subsequent Event | San Francisco
Lessee, Lease, Description [Line Items]
Sublease income	$ (2,800)

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Leases - Supplemental Income Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Leases [Abstract]
Operating lease cost	$ 3,116		$ 5,997
Finance lease cost:
Amortization of leased assets	171		322
Interest on lease liabilities	45		86
Total finance lease cost	216		408
Sublease income	(468)	$ (500)	(936)	$ (600)
Net lease cost	$ 2,864		$ 5,469

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Leases - Supplemental Balance Sheet Information (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating leases:
Right-of-use assets	$ 33,190
Operating lease liabilities	8,419
Operating lease liabilities, net of current portion	28,684
Total operating lease liabilities	37,103
Finance leases:
Property and equipment	3,479
Accumulated depreciation	(1,463)
Property and equipment, net	2,016
Other current liabilities	959
Other long-term liabilities	1,142
Total finance lease liabilities	$ 2,101

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Leases - Lease Term and Discount Rate (Details)	Jun. 30, 2019
Weighted-average remaining lease term (in years):
Operating lease	5 years
Finance lease	2 years 3 months 18 days
Weighted-average discount rate:
Operating lease	6.50%
Finance lease	8.20%

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Leases - Maturity of Lease Liabilities (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Leases
Remainder of 2019	$ 4,882
2020	11,030
2021	10,562
2022	7,126
2023	2,218
Thereafter	8,769
Total lease payments	44,587
Less: interest	(6,828)
Less: tenant improvements reimbursement	(656)
Total	37,103
Operating Sublease
Remainder of 2019	(942)
2020	(1,932)
2021	(1,989)
2022	(1,878)
2023	0
Thereafter	0
Total	(6,741)
Finance Leases
Remainder of 2019	555
2020	1,040
2021	633
2022	64
2023	0
Thereafter	0
Total lease payments	2,292
Less: interest	(191)
Less: tenant improvements reimbursement	0
Total	$ 2,101

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Commitments and Contingencies - Narrative (Details) $ in Thousands		6 Months Ended
	Aug. 23, 2016 plaintiff	Jun. 30, 2019 USD ($) facility debt_instrument	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Operating Leased Assets [Line Items]
Number of leased facilities | facility		2
Number of letters of credit | debt_instrument		2
Restricted cash		$ 167	$ 132,931
Loss contingency accrual		3,730		$ 3,750
Sarah Patton, et al v. ServiceSource Delaware, Inc | Pending Litigation
Operating Leased Assets [Line Items]
Number of plaintiffs | plaintiff	3
Money market mutual funds | Letter of Credit
Operating Leased Assets [Line Items]
Letters of credit		2,300
Restricted cash		$ 2,300

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Commitments and Contingencies - Future Minimum Payments Under Non-cancelable Service Contract Commitments (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Non-cancelable Service Contract Commitments
Remainder of 2019	$ 3,886
2020	9,091
2021	7,986
2022	7,431
2023	8,237
Thereafter	0
Total	$ 36,631

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Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 52,358	$ 61,111	$ 107,869	$ 119,696
Fixed consideration
Disaggregation of Revenue [Line Items]
Revenue	18,828	20,683	38,557	38,425
Variable consideration
Disaggregation of Revenue [Line Items]
Revenue	33,530	40,428	69,312	81,271
APJ
Disaggregation of Revenue [Line Items]
Revenue	9,345	9,255	18,019	16,849
EMEA
Disaggregation of Revenue [Line Items]
Revenue	13,418	14,669	27,054	30,191
NALA
Disaggregation of Revenue [Line Items]
Revenue	29,595	37,187	62,796	72,656
Professional services
Disaggregation of Revenue [Line Items]
Revenue	442	692	825	2,699
Selling services
Disaggregation of Revenue [Line Items]
Revenue	$ 51,916	$ 60,419	$ 107,044	$ 116,997

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Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract asset	$ 100,000		$ 100,000		$ 200,000
Contract liability	549,000		549,000		873,000
Amortization expense for the remainder of 2019			400,000
Amortization expense for 2020			600,000
Amortization expense for 2021 and beyond			300,000
Additional contract costs capitalized			$ 200,000		1,100,000
Amortization term			2 years 4 months 24 days
Impairment of contract costs	0	$ 0	$ 0	$ 0
ASU 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract acquisition costs					3,300,000
Amortization of contract acquisition costs	200,000	400,000	500,000	800,000	$ 1,500,000
Selling services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Remaining performance obligation	42,500,000		42,500,000
After Adoption of New Revenue Guidance
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Amortization of contract acquisition costs	$ 300,000	$ 100,000	$ 400,000	$ 100,000

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Revenues, Contract Asset and Liability Balances and Contract Acquisition Costs - Performance Obligations (Details) - Selling services $ in Millions	Jun. 30, 2019 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 42.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 0.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, expected timing of satisfaction	6 months

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Stockholders' Equity - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 1,236	$ 3,427	$ 2,806	$ 6,538
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	129	279	288	558
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	429	833	872	1,719
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	18	58	12	122
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 660	$ 2,257	$ 1,634	$ 4,139

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Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized stock-based compensation related to internal-use software	$ 30	$ 100	$ 30	$ 200
Antidilutive shares excluded from diluted earnings per share calculation (in shares)	7.6	5.1	8.9	5.7
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of options granted (in dollars per share)			$ 0.51	$ 1.84
Employee Stock Option | The 2011 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, stock options	$ 1,700		$ 1,700
Unrecognized compensation expense, weighted-average period recognized			2 years 8 months 12 days
RSUs and PSUs | The 2011 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, weighted-average period recognized			2 years 4 months 24 days
Unrecognized compensation expense, RSUs and PSUs	$ 8,600		$ 8,600

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Stockholders' Equity - Option Activity (Details) - Employee Stock Option $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($) $ / shares shares
Options Outstanding, Number of Shares
Outstanding, beginning balance (in shares) | shares	7,516
Granted (in shares) | shares	182
Expired and/or forfeited (in shares) | shares	(3,589)
Outstanding, ending balance (in shares) | shares	4,109
Options exercisable (in shares) | shares	1,232
Options Outstanding, Options, Weighted Average Exercise Price
Outstanding, weighted average exercise price per share, beginning balance (in dollars per share) | $ / shares	$ 3.34
Granted, weighted average exercise price per share (in dollars per share) | $ / shares	1.03
Expired and/or Forfeited, weighted average exercise price per share (in dollars per share) | $ / shares	4.17
Outstanding, weighted average exercise price per share, ending balance (in dollars per share) | $ / shares	2.51
Options exercisable, weighted average option price per share (in dollars per share) | $ / shares	$ 5.17
Outstanding, weighted average remaining contractual life	7 years 10 months 20 days
Options exercisable, weighted average remaining contractual life	4 years 5 months 15 days
Outstanding, intrinsic value | $	$ 0
Options exercisable, intrinsic value | $	$ 0

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Stockholders' Equity - Restricted Stock Unit Activity (Details) - RSUs and PSUs shares in Thousands	6 Months Ended
	Jun. 30, 2019 $ / shares shares
Shares
Unvested, beginning balance (in shares)	5,669
Granted (in shares)	325
Vested (in shares)	(1,195)
Forfeited (in shares)	(995)
Unvested, ending balance (in shares)	3,804
Weighted-Average Grant Date Fair Value
Unvested, weighted average grant date fair value, beginning balance (in dollars per share) | $ / shares	$ 3.29
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	1.03
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	3.78
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	3.79
Unvested, weighted average grant date fair value, ending balance (in dollars per share) | $ / shares	$ 2.81
Common stock, shares issued (in shares)	1,175
Shares withheld for taxes (in shares)	20

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Income Taxes (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 1.0	$ 0.9

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Restructuring and Other Related Costs - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2017 location	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges					$ 209
February 2019 Restructuring Effort
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 100		$ 1,200
May 2017 Restructuring Effort
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 40	$ 200	$ 39	$ 200	$ 209	$ 7,308
Number of locations where reduction of headcount and office spaces took place (location) | location	4

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Restructuring and Other Related Costs - Restructuring and Other Reserve Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Restructuring and other related costs				$ 209
February 2019 Restructuring Effort
Restructuring Reserve [Roll Forward]
Restructuring and other related costs	$ 100		$ 1,200
February 2019 Restructuring Effort | Severance and Other Employee Costs
Restructuring Reserve [Roll Forward]
Beginning Balance			0
Restructuring and other related costs			1,167
Cash paid			(1,117)
Ending Balance	50		50		$ 0
May 2017 Restructuring Effort
Restructuring Reserve [Roll Forward]
Beginning Balance			962	1,825	1,825	$ 0
Restructuring and other related costs	40	$ 200	39	200	209	7,308
Cash paid			(93)		(1,321)	(4,245)
Change in estimates and non-cash charges			(40)		249	(886)
Acceleration of stock-based compensation expense in additional paid-in capital						(352)
Ending Balance	868		868		962	1,825
May 2017 Restructuring Effort | Severance and Other Employee Costs
Restructuring Reserve [Roll Forward]
Beginning Balance			0	71	71	0
Restructuring and other related costs			0		120	3,483
Cash paid			0		(188)	(3,060)
Change in estimates and non-cash charges			0		(3)	0
Acceleration of stock-based compensation expense in additional paid-in capital						(352)
Ending Balance	0		0		0	71
May 2017 Restructuring Effort | Lease and Other Contract Termination Costs
Restructuring Reserve [Roll Forward]
Beginning Balance			962	1,754	1,754	0
Restructuring and other related costs			39		89	2,939
Cash paid			(93)		(1,133)	(1,185)
Change in estimates and non-cash charges			(40)		252	0
Acceleration of stock-based compensation expense in additional paid-in capital						0
Ending Balance	868		868		962	1,754
May 2017 Restructuring Effort | Asset Impairments
Restructuring Reserve [Roll Forward]
Beginning Balance			0	$ 0	0	0
Restructuring and other related costs					0	886
Cash paid			0		0	0
Change in estimates and non-cash charges			0		0	(886)
Acceleration of stock-based compensation expense in additional paid-in capital						0
Ending Balance	$ 0		$ 0		$ 0	$ 0