Edgio (EGIOQ) 10-Q 25 Apr 17 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 20, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	LIMELIGHT NETWORKS, INC.
Entity Central Index Key	1,391,127
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		107,978,117

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 19,152	$ 21,734
Marketable securities	41,676	44,453
Accounts receivable, net	26,191	27,418
Income taxes receivable	99	125
Prepaid expenses and other current assets	3,989	4,865
Total current assets	91,107	98,595
Property and equipment, net	30,204	30,352
Marketable securities, less current portion	40	40
Deferred income taxes	1,193	1,105
Goodwill	76,702	76,243
Other assets	1,806	1,794
Total assets	201,052	208,129
Current liabilities:
Accounts payable	8,558	8,790
Deferred revenue	1,845	2,138
Income taxes payable	193	188
Provision for litigation	18,000	18,000
Other current liabilities	10,600	12,836
Total current liabilities	39,196	41,952
Deferred income taxes	154	152
Deferred revenue, less current portion	13	22
Provision for litigation, less current portion	22,500	27,000
Other long-term liabilities	1,238	1,435
Total liabilities	63,101	70,561
Commitments and contingencies
Stockholders’ equity:
Convertible preferred stock, $0.001 par value; 7,500 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value; 300,000 shares authorized; 107,979 and 107,059 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	108	107
Additional paid-in capital	493,567	490,819
Accumulated other comprehensive loss	(10,067)	(11,038)
Accumulated deficit	(345,657)	(342,320)
Total stockholders’ equity	137,951	137,568
Total liabilities and stockholders’ equity	$ 201,052	$ 208,129

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Convertible Preferred Stock, Par Value (in usd per share)	$ 0.001	$ 0.001
Convertible Preferred Stock, Shares Authorized	7,500,000	7,500,000
Convertible Preferred Stock, Shares Issued	0	0
Convertible Preferred Stock, Shares Outstanding	0	0
Common Stock, Par Value (in usd per share)	$ 0.001	$ 0.001
Common Stock, Shares Authorized	300,000,000	300,000,000
Common Stock, Shares Issued	107,979,000	107,059,000
Common Stock, Shares Outstanding	107,979,000	107,059,000

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenues		$ 44,735	$ 41,422
Cost of revenue:
Cost of services	[1]	19,007	20,110
Depreciation — network		4,557	4,668
Total cost of revenue		23,564	24,778
Gross profit		21,171	16,644
Operating expenses:
General and administrative		8,514	6,808
Sales and marketing		9,267	8,903
Research and development		6,220	6,325
Depreciation and amortization		589	623
Total operating expenses		24,590	22,659
Operating loss		(3,419)	(6,015)
Other income (expense):
Interest expense		(14)	(179)
Interest income		117	6
Other, net		87	400
Total other income		190	227
Loss before income taxes		(3,229)	(5,788)
Income tax expense		108	158
Net loss		$ (3,337)	$ (5,946)
Net loss per share, Basic and diluted:
Basic and diluted (in usd per share)		$ (0.03)	$ (0.06)
Weighted average shares used in per share calculation:
Basic and diluted weighted average outstanding shares of common stock (in shares)		107,363	102,693
[1]	Cost of services excludes amortization related to intangibles, including existing technologies, and customer relationships, which are included in depreciation and amortization.

Unaudited Consolidated Stateme5

Unaudited Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (3,337)	$ (5,946)
Other comprehensive income, net of tax:
Unrealized gain on investments	30	0
Foreign exchange translation gain	941	659
Other comprehensive gain, net of tax	971	659
Comprehensive loss	$ (2,366)	$ (5,287)

Unaudited Consolidated Stateme6

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating activities
Net loss	$ (3,337)	$ (5,946)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	5,146	5,291
Share-based compensation	3,075	3,496
Foreign currency remeasurement loss (gain)	289	(301)
Deferred income taxes	(50)	82
Gain on sale of property and equipment	(75)	0
Accounts receivable charges (recoveries)	249	(116)
Amortization of premium on marketable securities	83	19
Realized loss on sale of marketable securities	0	32
Changes in operating assets and liabilities:
Accounts receivable	978	(540)
Prepaid expenses and other current assets	914	3,583
Income taxes receivable	29	(13)
Other assets	(3)	342
Accounts payable and other current liabilities	(1,160)	(4,005)
Deferred revenue	(302)	473
Income taxes payable	(4)	(127)
Payments for provision for litigation	(4,500)	0
Other long term liabilities	(197)	900
Net cash provided by operating activities	1,135	3,170
Investing activities
Purchases of marketable securities	(4,526)	0
Sale and maturities of marketable securities	7,250	28,315
Change in restricted cash	0	(62,790)
Purchases of property and equipment	(5,745)	(1,421)
Proceeds from sale of property and equipment	58	0
Net cash used in investing activities	(2,963)	(35,896)
Financing activities
Principal payments on capital lease obligations	0	(159)
Payments of employee tax withholdings related to restricted stock vesting	(1,036)	(646)
Proceeds from line of credit	0	12,790
Proceeds from employee stock plans	111	43
Net cash (used in) provided by financing activities	(925)	12,028
Effect of exchange rate changes on cash and cash equivalents	171	159
Net decrease in cash and cash equivalents	(2,582)	(20,539)
Cash and cash equivalents, beginning of period	21,734	44,680
Cash and cash equivalents, end of period	19,152	24,141
Supplemental disclosure of cash flow information
Cash paid during the period for interest	4	154
Cash paid during the period for income taxes, net of refunds	124	224
Property and equipment acquired through capital leases	$ 0	$ 1,521

Nature of Business

Nature of Business	3 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Limelight operates a globally distributed, high-performance network and provides a suite of integrated services marketed under the Limelight Orchestrate Platform which include content delivery, video content management, website and web application acceleration, website and content security, and cloud storage services. We were incorporated in Delaware in 2003, and have operated in the Phoenix metropolitan area since 2001 and elsewhere throughout the United States since 2003. We began international operations in 2004.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. They do not include all of the information and footnotes required by U.S. generally accepted accounting principles (U.S. GAAP) for complete financial statements. Such interim financial information is unaudited but reflects all adjustments that are, in the opinion of management, necessary for the fair presentation of the interim periods presented and of a normal recurring nature. The results of operations presented in this quarterly report on Form 10-Q are not necessarily indicative of the results that may be expected for the year ending December 31, 2017, or for any future periods. This quarterly report on Form 10-Q should be read in conjunction with our audited financial statements and footnotes included in our annual report on Form 10-K for the fiscal year ended December 31, 2016. All information is presented in thousands, except per share amounts and where specifically noted. The consolidated financial statements include accounts of Limelight and our wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated. In addition, certain other reclassifications have been made to prior year amounts to conform to the current year presentation. Use of Estimates The preparation of the consolidated financial statements and related disclosures in conformity with U.S. GAAP requires management to make judgments, assumptions, and estimates that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results and outcomes may differ from those estimates. The results of operations presented in this quarterly report on Form 10-Q are not necessarily indicative of the results that may be expected for the year ending December 31, 2017, or for any other future periods. Recent Accounting Standards Adopted Accounting Standards In November 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2015-17, which requires entities to present deferred tax assets (DTAs) and deferred tax liabilities (DTLs) as noncurrent in a classified balance sheet. ASU 2015-17 simplifies the current guidance, which requires entities to separately present DTAs and DTLs as current and noncurrent in a classified balance sheet. ASU 2015-17 is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. We adopted this guidance effective January 1, 2017 on a retrospective basis. The impact of adoption of this ASU was that $88 of current DTAs in our consolidated balance sheet for the year ended December 31, 2016, has been reclassified to noncurrent DTAs. In March 2016, the FASB issued ASU 2016-09, which amends the existing accounting standards for share-based payments, including the accounting for income taxes and forfeitures, as well as the classifications on the statements of cash flows. We adopted this guidance effective January 1, 2017. Beginning January 1, 2017, stock-based compensation excess tax benefits or tax deficiencies are reflected in the Consolidated Statements of Operations as a component of the provision for taxes, whereas they previously were recognized as additional paid in capital in the stockholders’ deficit in the Consolidated Balance Sheets. We have elected to continue to estimate forfeitures expected to occur to determine stock-based compensation expense. Additionally, beginning with the three months ended March 31, 2017, and on a prospective basis, the Consolidated Statements of Cash Flows now requires excess tax benefits be presented as an operating activity rather than as a financing activity, while the payment of withholding taxes on the settlement of stock-based compensation awards continues to be presented as a financing activity. The implementation of this guidance did not have a material impact on the Consolidated Statements of Cash Flows for the three months ended March 31, 2017. During the three months ended March 31, 2017 there was no change to beginning retained earnings for previously unrecognized tax benefits. The increase of $5.2 million to the net operating loss carryforward deferred tax asset was fully offset by an increase to the valuation allowance. During the three months ended March 31, 2017 we did not record excess tax benefits on stock options and restricted stock units as a result of the adoption of ASU 2016-09 because such amounts are fully offset by our valuation allowance. Recently Issued Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under today’s guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price, allocating the transaction price to each separate performance obligation and accounting treatment of costs to obtain and fulfill contracts. In August 2015, the FASB issued ASU 2015-14, which defers the effective date of ASU 2014-09 for all entities by one year. Accordingly, public business entities should apply the guidance in ASU 2014-09 to annual reporting periods (including interim periods within those periods) beginning after December 15, 2017. Early adoption is permitted but not before annual periods beginning after December 15, 2016. While we do not plan to early adopt this ASU, we currently believe that once we do adopt this standard, we will use the modified retrospective approach. We are evaluating and continue to assess the potential impact on our accounting policies and internal control processes including system readiness. We have reviewed several contracts with our largest revenue generating customers and we currently believe the impact on our consolidated financial statements will not be significant as fees are generally earned on actual usage primarily on a month to month basis. We will continue to review additional customer contracts to assess the impact, including evaluating the treatment of upfront costs to obtain these contracts under the new guidance. We do not know and cannot reasonably estimate quantitative information related to the impact of the new standard on our financial statements at this time. In February 2016, the FASB issued ASU No. 2016-02, which establishes a right-of-use model that requires a lessee to record a right-of-use asset and a lease liability on the balance sheet for most leases. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. This guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within that reporting period. Early adoption is permitted and should be applied using a modified retrospective approach. We are in the process of evaluating the potential impacts of this new guidance on our consolidated financial statements and related disclosures. In August 2016, the FASB issued ASU No. 2016-15, which amends Accounting Standards Codification 230, to clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. The FASB issued ASU 2016-15 with the intent of reducing diversity in practice with respect to eight types of cash flows. This guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. We are in the process of evaluating the adoption and potential impact of this new guidance on our consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, which simplifies the accounting for goodwill impairment. The updated guidance eliminates Step 2 of the impairment test, which requires entities to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value, determined in Step 1. This guidance will become effective for us in fiscal years beginning after December 15, 2019, including interim periods within that reporting period. We will adopt this guidance using a prospective approach. Earlier adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We do not plan to early adopt this ASU, and we are currently evaluating the impact of this guidance on our consolidated financial statements.

Investments in Marketable Secur

Investments in Marketable Securities	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Investments in Marketable Securities	Investments in Marketable Securities The following is a summary of marketable securities (designated as available-for-sale) at March 31, 2017 : Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Certificate of deposits $ 40 $ — $ — $ 40 Commercial paper 3,989 — 3 3,986 Corporate notes and bonds 37,785 — 95 37,690 Total marketable securities $ 41,814 $ — $ 98 $ 41,716 The amortized cost and estimated fair value of marketable debt securities at March 31, 2017 , by maturity, are shown below: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Due in one year or less $ 27,145 $ — $ 58 $ 27,087 Due after one year and through five years 14,669 — 40 14,629 $ 41,814 $ — $ 98 $ 41,716 The following is a summary of marketable securities (designated as available-for-sale) at December 31, 2016 : Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Certificate of deposit $ 40 $ — $ — $ 40 Commercial paper 8,228 — 6 8,222 Corporate notes and bonds 36,353 — 122 36,231 Total marketable securities $ 44,621 $ — $ 128 $ 44,493 The amortized cost and estimated fair value of marketable debt securities at December 31, 2016 , by maturity, are shown below: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Due in one year or less $ 27,920 $ — $ 52 $ 27,868 Due after one year and through five years 16,701 — 76 16,625 $ 44,621 $ — $ 128 $ 44,493

Accounts Receivable, net

Accounts Receivable, net	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Accounts Receivable, net	Accounts Receivable, net Accounts receivable, net include: March 31, December 31, 2017 2016 Accounts receivable $ 27,045 $ 28,260 Less: credit allowance (240 ) (225 ) Less: allowance for doubtful accounts (614 ) (617 ) Total accounts receivable, net $ 26,191 $ 27,418

Prepaid Expenses and Other Curr

Prepaid Expenses and Other Current Assets	3 Months Ended
	Mar. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid Expenses and Other Current Assets	Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets include: March 31, December 31, 2017 2016 Prepaid bandwidth and backbone $ 468 $ 698 VAT receivable 1,070 1,296 Prepaid expenses and insurance 1,843 2,321 Vendor deposits and other 608 550 Total prepaid expenses and other current assets $ 3,989 $ 4,865

Property and Equipment, net

Property and Equipment, net	3 Months Ended
	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment, net	Property and Equipment, net Property and equipment, net include: March 31, December 31, 2017 2016 Network equipment $ 108,518 $ 108,416 Computer equipment and software 9,850 10,282 Furniture and fixtures 2,469 2,432 Leasehold improvements 5,315 5,127 Other equipment 182 182 Total property and equipment 126,334 126,439 Less: accumulated depreciation (96,130 ) (96,087 ) Total property and equipment, net $ 30,204 $ 30,352 Depreciation expense related to property and equipment classified in operating expense was $589 and $617 for the three months ended March 31, 2017 and 2016 , respectively.

Goodwill

Goodwill	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill We have recorded goodwill as a result of past business acquisitions. Goodwill is recorded when the purchase price paid for an acquisition exceeds the estimated fair value of the net identified tangible and intangible assets acquired. In each of our acquisitions, the objective of the acquisition was to expand our product offerings and customer base and to achieve synergies related to cross selling opportunities, all of which contributed to the recognition of goodwill. No interim indicators of impairment were identified as of March 31, 2017. Foreign currency translation adjustments increased the carrying amount of goodwill by $ 459 for the three months ended March 31, 2017 .

Other Current Liabilities

Other Current Liabilities	3 Months Ended
	Mar. 31, 2017
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other Current Liabilities Other current liabilities include: March 31, December 31, 2017 2016 Accrued compensation and benefits $ 4,111 $ 5,061 Accrued cost of revenue 2,678 2,178 Deferred rent 773 730 Accrued legal fees 469 262 Other accrued expenses 2,569 4,605 Total other current liabilities $ 10,600 $ 12,836

Line of Credit

Line of Credit	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Line of Credit	Line of Credit In October 2016, we entered into a Loan Modification Agreement (the Modification) to the Loan and Security Agreement (the Credit Agreement) with Silicon Valley Bank (SVB) originally entered into in November 2015. Under the Modification, we have reduced the maximum principal commitment amount from $25,000 to $5,000 . Our borrowing capacity is the lesser of the commitment amount or 80% of eligible accounts receivable. The Modification extends the Credit Agreement one year. All outstanding borrowings owed under the Credit Agreement become due and payable no later than the final maturity date of November 2, 2018. As of March 31, 2017 and December 31, 2016, we had no outstanding borrowings, and we had availability under the Credit Agreement of $5,000 . As of March 31, 2017, borrowings under the Credit Agreement bear interest at our option of one, two, three or six-month LIBOR plus a margin of 2.75% or an Alternative Base Rate (ABR), which is defined as the higher of (a) Wall Street Journal prime rate or (b) Federal Funds Rate plus 0.50% , plus a margin of 0.50% or 1.50% depending on our minimum liquidity, as defined in the Credit Agreement. If we fall below a minimum liquidity of $17,500 , we are required to use the ABR interest rate. We incurred a commitment fee (issuance costs) of 0.45% upon entering into the Modification. In addition, there is an unused line fee of 0.375% under the Credit Agreement and 0.30% under the Modification. Commitment fees are included in prepaid expenses and other current assets and as amortized are charged to interest expense. During the three months ended March 31, 2017 and 2016, interest expense was $0 and $73 , respectively, and commitment fees expense and amortization was $14 and $26 , respectively. Any borrowings are secured by essentially all of our domestic personal property, with a negative pledge on intellectual property. SVB’s security interest in our foreign subsidiaries is limited to 65% of voting stock of each such foreign subsidiary. The Modification eliminated the financial covenants under the Credit Agreement. Under the Modification, we are required to maintain a minimum liquidity, defined as cash balance at SVB plus availability on the revolver, of $7,500 at all times, measured quarterly, with a minimum of $5,000 of the $7,500 in cash at SVB. We are also subject to certain customary limitations on our ability to, among other things, incur debt, grant liens, make acquisitions and other investments, make certain restricted payments such as dividends, dispose of assets, or undergo a change in control. As of March 31, 2017, we were in compliance with all covenants under the Credit Agreement.

Other Long Term Liabilities

Other Long Term Liabilities	3 Months Ended
	Mar. 31, 2017
Other Liabilities Disclosure [Abstract]
Other Long Term Liabilities	Other Long Term Liabilities Other long term liabilities include: March 31, December 31, 2017 2016 Deferred rent $ 998 $ 1,186 Income taxes payable 240 249 Total other long term liabilities $ 1,238 $ 1,435

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Matters Akamai ‘703 Litigation In June 2006, Akamai Technologies, Inc. (Akamai) and the Massachusetts Institute of Technology (MIT) filed a lawsuit against us in the United States District Court for the District of Massachusetts alleging that we were infringing multiple patents assigned to MIT and exclusively licensed by MIT to Akamai. In February 2008, a jury returned a verdict in this lawsuit, finding that we infringed four claims of U.S. Patent No. 6,108,703 (the ’703 patent) and awarded Akamai damages of approximately $45,500 , which included lost profits, reasonable royalties and price erosion damages for the period April 2005 through December 31, 2007. We litigated this matter vigorously for years, during which time the jury verdict was overturned in 2009, and then, after more than six years of appeals by both Akamai and us in the Federal Circuit and the Supreme Court of the United States, the jury verdict was ultimately reinstated. A series of motions and hearings followed the reinstatement, and on July 1, 2016, the District Court entered final judgment in the case. On August 1, 2016, we entered into a settlement and license agreement with Akamai with respect to the ‘703 and certain other related patents, which settled all asserted and unasserted claims with respect to the licensed patents. The terms of the agreement require us to pay $54,000 over twelve equal quarterly installments, which began on August 1, 2016. We took a charge in the quarter ended June 30, 2016 for the full, undiscounted amount of $54,000 . As of March 31, 2017, there remained $40,500 due to Akamai under the terms of the settlement and license agreement. Akamai and XO Litigation On November 30, 2015, we filed a lawsuit against Akamai and XO Communications in the District Court for the Eastern District of Virginia alleging the infringement of six of our patents covering a broad range of inventions that we believe are critical to the effective and efficient delivery of bytes by a content delivery network (the Akamai and XO Litigation). In April 2016, the District Court denied a request for transfer by Akamai and XO Communications. Akamai also filed counterclaims on April 29, 2016, alleging the infringement of five of its patents. We filed an answer to Akamai’s counterclaims, denying each of the allegations of infringement on May 23, 2016. The judge recently delayed the May 1, 2017 trial date pending the resolution of certain applications for inter partes review of multiple patents asserted by each party. We do not currently know when the judge will schedule a new trial date. At this time, we believe a loss is neither probable nor reasonably possible, and as such, no provision for this lawsuit has been recorded in the consolidated financial statements. We intend to vigorously protect our intellectual property rights in this matter and vigorously defend against each of the counterclaims. 2016 Akamai Litigation On February 16, 2016, Akamai filed a complaint against us in the District Court for the District of Massachusetts alleging infringement of three of its patents. In April 2016, Akamai amended its complaint by withdrawing one of the asserted patents. We filed our answer to the complaint, denying each of the allegations of infringement, and asserting two counterclaims alleging infringement of two of our patents. On December 28, 2016, Akamai filed a second complaint against us in the District Court for the District of Massachusetts alleging infringement of three additional patents. We are currently evaluating the allegations in the complaint and intend to file a responsive pleading at the appropriate time. At this time, we believe a loss is neither probable nor reasonably possible in either pending matter in the District of Massachusetts, and as such, no provision for these lawsuits have been recorded in the consolidated financial statements. We intend to vigorously defend against Akamai’s claims and vigorously protect our intellectual property rights in these matters. Legal and other expenses associated with litigation have been significant. We include these litigation expenses in general and administrative expenses as incurred, as reported in the consolidated statement of operations. Other Matters We are subject to various other legal proceedings and claims, either asserted or unasserted, arising in the ordinary course of business. While the outcome of these claims cannot be predicted with certainty, management does not believe the outcome of any of these matters will have a material adverse effect on our business, financial position, results of operations, or cash flows. Litigation relating to the content delivery services industry is not uncommon, and we are, and from time to time have been, subject to such litigation. No assurances can be given with respect to the extent or outcome of any such litigation in the future. Taxes We are subject to indirect taxation in various states and foreign jurisdictions. Laws and regulations that apply to communications and commerce conducted over the Internet are becoming more prevalent, both in the United States and internationally, and may impose additional burdens on us conducting business online or providing Internet-related services. Increased regulation could negatively affect our business directly, as well as the businesses of our customers, which could reduce their demand for our services. For example, tax authorities in various states and abroad may impose taxes on the Internet-related revenue we generate based on regulations currently being applied to similar but not directly comparable industries. There are many transactions and calculations where the ultimate tax determination is uncertain. In addition, domestic and international taxation laws are subject to change. In the future, we may come under audit, which could result in changes to our tax estimates. We believe we maintain adequate tax reserves that are not material in amount, to offset potential liabilities that may arise upon audit. Although we believe our tax estimates and associated reserves are reasonable, the final determination of tax audits and any related litigation could be materially different than the amounts established for tax contingencies. To the extent these estimates ultimately prove to be inaccurate, the associated reserves would be adjusted, resulting in the recording of a benefit or expense in the period in which a change in estimate or a final determination is made.

Net Loss per Share

Net Loss per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Net Loss per Share	Net Loss per Share We calculate basic and diluted loss per weighted average share. We use the weighted-average number of shares of common stock outstanding during the period for the computation of basic earnings per share. Diluted earnings per share include the dilutive effect of all potentially dilutive common stock, including awards granted under our equity incentive compensation plans in the weighted-average number of shares of common stock outstanding. The following table sets forth the components used in the computation of basic and diluted net loss per share for the periods indicated: Three Months Ended March 31, 2017 2016 Net loss $ (3,337 ) $ (5,946 ) Basic and diluted weighted average outstanding shares of common stock 107,363 102,693 Basic and diluted net loss per share: $ (0.03 ) $ (0.06 ) For the three months ended March 31, 2017 and 2016 , the following potentially dilutive common stock, including awards granted under our equity incentive compensation plans, were excluded from the computation of diluted net loss per share because including them would have been anti-dilutive. Three Months Ended March 31, 2017 2016 Employee stock purchase plan 335 424 Stock options 282 134 Restricted stock units 1,878 524 2,495 1,082

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity Common Stock On March 14, 2017, our board of directors authorized a $25,000 share repurchase program. Under this program, we may repurchase shares periodically in the open market or through privately negotiated transactions, in accordance with applicable securities rules regarding issuer repurchases following the release of our financial results for the quarter ending March 31, 2017. Any shares repurchased under this program will be canceled and returned to authorized but unissued status. This new share repurchase program replaces the $9,500 remaining from the previously announced $15,000 share repurchase program. During the three months ended March 31, 2017 and 2016, respectively, we did not repurchase any shares under the previous repurchase program. Amended and Restated Equity Incentive Plan We established the 2007 Equity Incentive Plan, or the 2007 Plan, which allows for the grant of equity, including stock options and restricted stock unit awards. In June 2016, our stockholders approved the Amended and Restated Equity Incentive Plan, or the Restated 2007 Plan, which amended and restated the 2007 Plan. Approval of the Restated 2007 Plan replaced the terms and conditions of the 2007 Plan with the terms and conditions of the Restated 2007 Plan, and extended the term of the plan to April 2026. There was no increase in the aggregate amount of shares available for issuance. The total number of shares authorized for issuance under the Restated 2007 Plan was approximately 7,763 as of March 31, 2017. Employee Stock Purchase Plan In June 2013, our stockholders approved our 2013 Employee Stock Purchase Plan (ESPP). The ESPP allows participants to purchase our common stock at a 15% discount of the lower of the beginning or end of the offering period using the closing price on that day. During the three months ended March 31, 2017, we did not issue any shares under the ESPP. As of March 31, 2017, shares reserved for issuance to employees under this plan totaled 1,318 , and we held employee contributions of $688 (included in other current liabilities) for future purchases under the ESPP. Preferred Stock Our board of directors has authorized the issuance of up to 7,500 shares of preferred stock at March 31, 2017. The preferred stock may be issued in one or more series pursuant to a resolution or resolutions providing for such issuance duly adopted by the board of directors. As of March 31, 2017, the board of directors had not adopted any resolutions for the issuance of preferred stock.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Changes in the components of accumulated other comprehensive loss, net of tax, for the three months ended March 31, 2017 , was as follows: Unrealized Gains (Losses) on Foreign Available for Currency Sale Securities Total Balance, December 31, 2016 $ (10,910 ) $ (128 ) $ (11,038 ) Other comprehensive income before reclassifications 941 30 971 Amounts reclassified from accumulated other comprehensive loss — — — Net current period other comprehensive income 941 30 971 Balance, March 31, 2017 $ (9,969 ) $ (98 ) $ (10,067 )

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation The following table summarizes the components of share-based compensation expense included in our consolidated statement of operations: Three Months Ended March 31, 2017 2016 Share-based compensation expense by type: Stock options $ 950 $ 983 Restricted stock units 2,028 2,360 ESPP 97 153 Total share-based compensation expense $ 3,075 $ 3,496 Share-based compensation expense: Cost of services $ 359 $ 473 General and administrative expense 1,534 1,826 Sales and marketing expense 620 737 Research and development expense 562 460 Total share-based compensation expense $ 3,075 $ 3,496 Unrecognized share-based compensation expense totaled approximately $22,101 at March 31, 2017 , of which $6,947 related to stock options and $15,154 related to restricted stock units. We currently expect to recognize share-based compensation expense of $8,753 during the remainder of 2017, $8,331 in 2018 and the remainder thereafter based on scheduled vesting of the stock options and restricted stock units outstanding at March 31, 2017 .

Leases and Purchase Commitments

Leases and Purchase Commitments	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Leases and Purchase Commitments	Leases and Purchase Commitments Operating Leases We are committed to various non-cancellable operating leases for office space and office equipment which expire through 2022. Certain leases contain provisions for renewal options and rent escalations upon expiration of the initial lease terms. Approximate future minimum lease payments over the remaining lease periods as of March 31, 2017 , are as follows: Remainder of 2017 $ 2,652 2018 3,266 2019 1,524 2020 542 2021 359 Thereafter 55 Total minimum payments $ 8,398 Purchase Commitments We have long-term commitments for bandwidth usage and co-location with various networks and Internet service providers. The following summarizes minimum commitments as of March 31, 2017 : Remainder of 2017 $ 22,262 2018 16,456 2019 4,009 2020 102 2021 — Thereafter — Total minimum payments $ 42,829 Capital Leases As of March 31, 2017, and December 31, 2016, respectively, we had no outstanding capital lease obligations. The assets previously acquired under capital leases and related accumulated amortization is included in property and equipment, net in the consolidated balance sheets. The related amortization is included in depreciation - network (cost of revenue) and depreciation and amortization expense (operating expenses), depending on the nature of the asset, in the consolidated statements of operations. Interest expense related to capital leases was approximately $0 and $35 , respectively, for the three months ended March 31, 2017 and 2016.

Concentrations

Concentrations	3 Months Ended
	Mar. 31, 2017
Risks and Uncertainties [Abstract]
Concentrations	Concentrations During the three months ended March 31, 2017 , we had one customer, Amazon, who represented 10% or more of our total revenue. During the three months ended March 31, 2016, we had no customer who represented 10% or more of our total revenue. Revenue from customers located within the United States, our country of domicile, was $27,374 for the three months ended March 31, 2017 , compared to $22,410 for the three months ended March 31, 2016 . During the three months ended March 31, 2017 and 2016, respectively, we had three countries, based on customer location, the United States, Japan, and the United Kingdom that accounted for 10% or more of our total revenues.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income taxes for the interim periods presented have been included in the accompanying consolidated financial statements on the basis of an estimated annual effective tax rate. Based on an estimated annual effective tax rate and discrete items, income tax expense for the three months ended March 31, 2017 and 2016, was $108 and $158 , respectively. Income tax expense was different than the statutory income tax rate primarily due to us providing for a valuation allowance on deferred tax assets in certain jurisdictions, and the recording of state and foreign tax expense for the three month periods. We file income tax returns in jurisdictions with varying statutes of limitations. Tax years 2013 through 2015 remain subject to examination by federal tax authorities. Tax years 2012 through 2015 generally remain subject to examination by state tax authorities. As of March 31, 2017 , we are not under any federal or state examination for income taxes.

Segment Reporting and Geographi

Segment Reporting and Geographic Areas	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Segment Reporting and Geographic Areas	Segment Reporting and Geographic Areas Our chief operating decision maker (whom is our Chief Executive Officer) reviews the financial information presented on a consolidated basis for purposes of allocating resources and evaluating our financial performance. We operate in one industry segment — content delivery and related services and we operate in three geographic areas — Americas, Europe, Middle East, and Africa (EMEA), and Asia Pacific. Revenue by geography is based on the location of the customer from which the revenue is earned. The following table sets forth our revenue by geographic area: Three Months Ended March 31, 2017 2016 Americas $ 28,196 63.0 % $ 24,008 58.0 % EMEA 8,456 18.9 % 8,912 21.5 % Asia Pacific 8,083 18.1 % 8,502 20.5 % Total revenue $ 44,735 100.0 % $ 41,422 100.0 % The following table sets forth long-lived assets by geographic area in which the assets are located: March 31, December 31, 2017 2016 Americas $ 17,432 $ 18,665 International 12,772 11,687 Total long-lived assets $ 30,204 $ 30,352

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements As of March 31, 2017 , and December 31, 2016 , we held certain assets and liabilities that were required to be measured at fair value on a recurring basis. The following is a summary of fair value measurements at March 31, 2017 : Fair Value Measurements at Reporting Date Using Description Total Quoted Prices In Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds (2) $ 116 $ 116 $ — $ — Certificate of deposit (1) 40 — 40 — Commercial paper (1) 3,986 — 3,986 — Corporate notes and bonds (1) 37,690 — 37,690 — Total assets measured at fair value $ 41,832 $ 116 $ 41,716 $ — ____________ (1) Classified in marketable securities (2) Classified in cash and cash equivalents The following is a summary of fair value measurements at December 31, 2016 : Fair Value Measurements at Reporting Date Using Description Total Quoted Prices In Active Markets for Identical Assets Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds (2) $ 301 $ 301 $ — $ — Certificate of deposit (1) 40 — 40 — Commercial paper (1) 8,222 — 8,222 — Corporate notes and bonds (1) 36,231 — 36,231 — Total assets measured at fair value $ 44,794 $ 301 $ 44,493 $ — ____________ (1) Classified in marketable securities (2) Classified in cash and cash equivalents The carrying amount of cash equivalents approximates fair value because their maturity is less than three months. The carrying amount of short-term and long-term marketable securities approximates fair value as the securities are marked to market as of each balance sheet date with any unrealized gains and losses reported in stockholders’ equity. The carrying amount of accounts receivable, accounts payable and accrued liabilities approximates fair value due to the short-term maturity of the amounts.

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. They do not include all of the information and footnotes required by U.S. generally accepted accounting principles (U.S. GAAP) for complete financial statements. Such interim financial information is unaudited but reflects all adjustments that are, in the opinion of management, necessary for the fair presentation of the interim periods presented and of a normal recurring nature. The results of operations presented in this quarterly report on Form 10-Q are not necessarily indicative of the results that may be expected for the year ending December 31, 2017, or for any future periods. This quarterly report on Form 10-Q should be read in conjunction with our audited financial statements and footnotes included in our annual report on Form 10-K for the fiscal year ended December 31, 2016. All information is presented in thousands, except per share amounts and where specifically noted. The consolidated financial statements include accounts of Limelight and our wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated. In addition, certain other reclassifications have been made to prior year amounts to conform to the current year presentation.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements and related disclosures in conformity with U.S. GAAP requires management to make judgments, assumptions, and estimates that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results and outcomes may differ from those estimates. The results of operations presented in this quarterly report on Form 10-Q are not necessarily indicative of the results that may be expected for the year ending December 31, 2017, or for any other future periods.
Recent Accounting Standards	Recent Accounting Standards Adopted Accounting Standards In November 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2015-17, which requires entities to present deferred tax assets (DTAs) and deferred tax liabilities (DTLs) as noncurrent in a classified balance sheet. ASU 2015-17 simplifies the current guidance, which requires entities to separately present DTAs and DTLs as current and noncurrent in a classified balance sheet. ASU 2015-17 is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. We adopted this guidance effective January 1, 2017 on a retrospective basis. The impact of adoption of this ASU was that $88 of current DTAs in our consolidated balance sheet for the year ended December 31, 2016, has been reclassified to noncurrent DTAs. In March 2016, the FASB issued ASU 2016-09, which amends the existing accounting standards for share-based payments, including the accounting for income taxes and forfeitures, as well as the classifications on the statements of cash flows. We adopted this guidance effective January 1, 2017. Beginning January 1, 2017, stock-based compensation excess tax benefits or tax deficiencies are reflected in the Consolidated Statements of Operations as a component of the provision for taxes, whereas they previously were recognized as additional paid in capital in the stockholders’ deficit in the Consolidated Balance Sheets. We have elected to continue to estimate forfeitures expected to occur to determine stock-based compensation expense. Additionally, beginning with the three months ended March 31, 2017, and on a prospective basis, the Consolidated Statements of Cash Flows now requires excess tax benefits be presented as an operating activity rather than as a financing activity, while the payment of withholding taxes on the settlement of stock-based compensation awards continues to be presented as a financing activity. The implementation of this guidance did not have a material impact on the Consolidated Statements of Cash Flows for the three months ended March 31, 2017. During the three months ended March 31, 2017 there was no change to beginning retained earnings for previously unrecognized tax benefits. The increase of $5.2 million to the net operating loss carryforward deferred tax asset was fully offset by an increase to the valuation allowance. During the three months ended March 31, 2017 we did not record excess tax benefits on stock options and restricted stock units as a result of the adoption of ASU 2016-09 because such amounts are fully offset by our valuation allowance. Recently Issued Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under today’s guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price, allocating the transaction price to each separate performance obligation and accounting treatment of costs to obtain and fulfill contracts. In August 2015, the FASB issued ASU 2015-14, which defers the effective date of ASU 2014-09 for all entities by one year. Accordingly, public business entities should apply the guidance in ASU 2014-09 to annual reporting periods (including interim periods within those periods) beginning after December 15, 2017. Early adoption is permitted but not before annual periods beginning after December 15, 2016. While we do not plan to early adopt this ASU, we currently believe that once we do adopt this standard, we will use the modified retrospective approach. We are evaluating and continue to assess the potential impact on our accounting policies and internal control processes including system readiness. We have reviewed several contracts with our largest revenue generating customers and we currently believe the impact on our consolidated financial statements will not be significant as fees are generally earned on actual usage primarily on a month to month basis. We will continue to review additional customer contracts to assess the impact, including evaluating the treatment of upfront costs to obtain these contracts under the new guidance. We do not know and cannot reasonably estimate quantitative information related to the impact of the new standard on our financial statements at this time. In February 2016, the FASB issued ASU No. 2016-02, which establishes a right-of-use model that requires a lessee to record a right-of-use asset and a lease liability on the balance sheet for most leases. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. This guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within that reporting period. Early adoption is permitted and should be applied using a modified retrospective approach. We are in the process of evaluating the potential impacts of this new guidance on our consolidated financial statements and related disclosures. In August 2016, the FASB issued ASU No. 2016-15, which amends Accounting Standards Codification 230, to clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. The FASB issued ASU 2016-15 with the intent of reducing diversity in practice with respect to eight types of cash flows. This guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. We are in the process of evaluating the adoption and potential impact of this new guidance on our consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, which simplifies the accounting for goodwill impairment. The updated guidance eliminates Step 2 of the impairment test, which requires entities to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value, determined in Step 1. This guidance will become effective for us in fiscal years beginning after December 15, 2019, including interim periods within that reporting period. We will adopt this guidance using a prospective approach. Earlier adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We do not plan to early adopt this ASU, and we are currently evaluating the impact of this guidance on our consolidated financial statements.

Investments in Marketable Sec28

Investments in Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Summary of Marketable Securities (designated as available-for-sale)	The following is a summary of marketable securities (designated as available-for-sale) at March 31, 2017 : Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Certificate of deposits $ 40 $ — $ — $ 40 Commercial paper 3,989 — 3 3,986 Corporate notes and bonds 37,785 — 95 37,690 Total marketable securities $ 41,814 $ — $ 98 $ 41,716 The following is a summary of marketable securities (designated as available-for-sale) at December 31, 2016 : Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Certificate of deposit $ 40 $ — $ — $ 40 Commercial paper 8,228 — 6 8,222 Corporate notes and bonds 36,353 — 122 36,231 Total marketable securities $ 44,621 $ — $ 128 $ 44,493
Amortized Cost and Estimated Fair Value of Marketable Securities (designated as available-for-sale) by maturity	The amortized cost and estimated fair value of marketable debt securities at March 31, 2017 , by maturity, are shown below: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Due in one year or less $ 27,145 $ — $ 58 $ 27,087 Due after one year and through five years 14,669 — 40 14,629 $ 41,814 $ — $ 98 $ 41,716 The amortized cost and estimated fair value of marketable debt securities at December 31, 2016 , by maturity, are shown below: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Due in one year or less $ 27,920 $ — $ 52 $ 27,868 Due after one year and through five years 16,701 — 76 16,625 $ 44,621 $ — $ 128 $ 44,493

Accounts Receivable, net (Table

Accounts Receivable, net (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Summary of Accounts Receivable, net	Accounts receivable, net include: March 31, December 31, 2017 2016 Accounts receivable $ 27,045 $ 28,260 Less: credit allowance (240 ) (225 ) Less: allowance for doubtful accounts (614 ) (617 ) Total accounts receivable, net $ 26,191 $ 27,418

Prepaid Expenses and Other Cu30

Prepaid Expenses and Other Current Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets include: March 31, December 31, 2017 2016 Prepaid bandwidth and backbone $ 468 $ 698 VAT receivable 1,070 1,296 Prepaid expenses and insurance 1,843 2,321 Vendor deposits and other 608 550 Total prepaid expenses and other current assets $ 3,989 $ 4,865

Property and Equipment, net (Ta

Property and Equipment, net (Tables)	3 Months Ended
	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment, net	Property and equipment, net include: March 31, December 31, 2017 2016 Network equipment $ 108,518 $ 108,416 Computer equipment and software 9,850 10,282 Furniture and fixtures 2,469 2,432 Leasehold improvements 5,315 5,127 Other equipment 182 182 Total property and equipment 126,334 126,439 Less: accumulated depreciation (96,130 ) (96,087 ) Total property and equipment, net $ 30,204 $ 30,352

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2017
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other current liabilities include: March 31, December 31, 2017 2016 Accrued compensation and benefits $ 4,111 $ 5,061 Accrued cost of revenue 2,678 2,178 Deferred rent 773 730 Accrued legal fees 469 262 Other accrued expenses 2,569 4,605 Total other current liabilities $ 10,600 $ 12,836

Other Long Term Liabilities (Ta

Other Long Term Liabilities (Tables)	3 Months Ended
	Mar. 31, 2017
Other Liabilities Disclosure [Abstract]
Other Long Term Liabilities	Other long term liabilities include: March 31, December 31, 2017 2016 Deferred rent $ 998 $ 1,186 Income taxes payable 240 249 Total other long term liabilities $ 1,238 $ 1,435

Net Loss per Share (Tables)

Net Loss per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Income (Loss) Per Share	The following table sets forth the components used in the computation of basic and diluted net loss per share for the periods indicated: Three Months Ended March 31, 2017 2016 Net loss $ (3,337 ) $ (5,946 ) Basic and diluted weighted average outstanding shares of common stock 107,363 102,693 Basic and diluted net loss per share: $ (0.03 ) $ (0.06 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	For the three months ended March 31, 2017 and 2016 , the following potentially dilutive common stock, including awards granted under our equity incentive compensation plans, were excluded from the computation of diluted net loss per share because including them would have been anti-dilutive. Three Months Ended March 31, 2017 2016 Employee stock purchase plan 335 424 Stock options 282 134 Restricted stock units 1,878 524 2,495 1,082

Accumulated Other Comprehensi35

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss	Changes in the components of accumulated other comprehensive loss, net of tax, for the three months ended March 31, 2017 , was as follows: Unrealized Gains (Losses) on Foreign Available for Currency Sale Securities Total Balance, December 31, 2016 $ (10,910 ) $ (128 ) $ (11,038 ) Other comprehensive income before reclassifications 941 30 971 Amounts reclassified from accumulated other comprehensive loss — — — Net current period other comprehensive income 941 30 971 Balance, March 31, 2017 $ (9,969 ) $ (98 ) $ (10,067 )

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Components of Share-based Compensation Expense	The following table summarizes the components of share-based compensation expense included in our consolidated statement of operations: Three Months Ended March 31, 2017 2016 Share-based compensation expense by type: Stock options $ 950 $ 983 Restricted stock units 2,028 2,360 ESPP 97 153 Total share-based compensation expense $ 3,075 $ 3,496 Share-based compensation expense: Cost of services $ 359 $ 473 General and administrative expense 1,534 1,826 Sales and marketing expense 620 737 Research and development expense 562 460 Total share-based compensation expense $ 3,075 $ 3,496

Leases and Purchase Commitmen37

Leases and Purchase Commitments (Tables)	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Future Minimum Lease Payments Over Remaining Lease Periods	Approximate future minimum lease payments over the remaining lease periods as of March 31, 2017 , are as follows: Remainder of 2017 $ 2,652 2018 3,266 2019 1,524 2020 542 2021 359 Thereafter 55 Total minimum payments $ 8,398
Minimum Purchase Commitments	The following summarizes minimum commitments as of March 31, 2017 : Remainder of 2017 $ 22,262 2018 16,456 2019 4,009 2020 102 2021 — Thereafter — Total minimum payments $ 42,829

Segment Reporting and Geograp38

Segment Reporting and Geographic Areas (Tables)	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Revenue Earned by Geographic Area	The following table sets forth our revenue by geographic area: Three Months Ended March 31, 2017 2016 Americas $ 28,196 63.0 % $ 24,008 58.0 % EMEA 8,456 18.9 % 8,912 21.5 % Asia Pacific 8,083 18.1 % 8,502 20.5 % Total revenue $ 44,735 100.0 % $ 41,422 100.0 %
Long-lived Assets by Geographical Area	The following table sets forth long-lived assets by geographic area in which the assets are located: March 31, December 31, 2017 2016 Americas $ 17,432 $ 18,665 International 12,772 11,687 Total long-lived assets $ 30,204 $ 30,352

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Summary of Money Market Funds, Marketable Securities, Other Investment-related Assets and Current Liabilities	The following is a summary of fair value measurements at March 31, 2017 : Fair Value Measurements at Reporting Date Using Description Total Quoted Prices In Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds (2) $ 116 $ 116 $ — $ — Certificate of deposit (1) 40 — 40 — Commercial paper (1) 3,986 — 3,986 — Corporate notes and bonds (1) 37,690 — 37,690 — Total assets measured at fair value $ 41,832 $ 116 $ 41,716 $ — ____________ (1) Classified in marketable securities (2) Classified in cash and cash equivalents The following is a summary of fair value measurements at December 31, 2016 : Fair Value Measurements at Reporting Date Using Description Total Quoted Prices In Active Markets for Identical Assets Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds (2) $ 301 $ 301 $ — $ — Certificate of deposit (1) 40 — 40 — Commercial paper (1) 8,222 — 8,222 — Corporate notes and bonds (1) 36,231 — 36,231 — Total assets measured at fair value $ 44,794 $ 301 $ 44,493 $ — ____________ (1) Classified in marketable securities (2) Classified in cash and cash equivalents

Summary of Significant Accoun40

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in net operating loss carryforward deferred tax asset	$ 5,200
Increase in deferred tax asset valuation allowance	$ 5,200
ASU 2015-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Current deferred tax assets		$ 0
Noncurrent deferred tax assets		$ 88

Investments in Marketable Sec41

Investments in Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Summary of marketable securities (designated as available-for-sale)
Amortized Cost	$ 41,814	$ 44,621
Gross Unrealized Gains	0	0
Gross Unrealized Losses	98	128
Estimated Fair Value	41,716	44,493
Certificate of deposit
Summary of marketable securities (designated as available-for-sale)
Amortized Cost	40	40
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	40	40
Commercial paper
Summary of marketable securities (designated as available-for-sale)
Amortized Cost	3,989	8,228
Gross Unrealized Gains	0	0
Gross Unrealized Losses	3	6
Estimated Fair Value	3,986	8,222
Corporate notes and bonds
Summary of marketable securities (designated as available-for-sale)
Amortized Cost	37,785	36,353
Gross Unrealized Gains	0	0
Gross Unrealized Losses	95	122
Estimated Fair Value	$ 37,690	$ 36,231

Investments in Marketable Sec42

Investments in Marketable Securities (Details 1) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Amortized cost and estimated fair value of marketable securities (designated as available-for-sale) by maturity
Amortized Cost	$ 41,814	$ 44,621
Gross Unrealized Gains	0	0
Gross Unrealized Losses	98	128
Estimated Fair Value	41,716	44,493
Debt securities
Amortized cost and estimated fair value of marketable securities (designated as available-for-sale) by maturity
Amortized Cost, Due in one year or less	27,145	27,920
Gross Unrealized Gains, Due in one year or less	0	0
Gross Unrealized Losses, Due in one year or less	58	52
Estimated Fair Value, Due in one year or less	27,087	27,868
Amortized Cost, Due after one year and through five years	14,669	16,701
Gross Unrealized Gains, Due after one year and through five years	0	0
Gross Unrealized Losses, Due after one year and through five years	40	76
Estimated Fair Value, Due after one year and through five years	14,629	16,625
Amortized Cost	41,814	44,621
Gross Unrealized Gains	0	0
Gross Unrealized Losses	98	128
Estimated Fair Value	$ 41,716	$ 44,493

Accounts Receivable, net (Detai

Accounts Receivable, net (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Summary of Accounts Receivable, net
Accounts receivable	$ 27,045	$ 28,260
Less: credit allowance	(240)	(225)
Less: allowance for doubtful accounts	(614)	(617)
Total accounts receivable, net	$ 26,191	$ 27,418

Prepaid Expenses and Other Cu44

Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid bandwidth and backbone	$ 468	$ 698
VAT receivable	1,070	1,296
Prepaid expenses and insurance	1,843	2,321
Vendor deposits and other	608	550
Total prepaid expenses and other current assets	$ 3,989	$ 4,865

Property and Equipment, net (De

Property and Equipment, net (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property and equipment, net
Property and equipment, gross	$ 126,334	$ 126,439
Less: accumulated depreciation	(96,130)	(96,087)
Total property and equipment, net	30,204	30,352
Network equipment
Property and equipment, net
Property and equipment, gross	108,518	108,416
Computer equipment and software
Property and equipment, net
Property and equipment, gross	9,850	10,282
Furniture and fixtures
Property and equipment, net
Property and equipment, gross	2,469	2,432
Leasehold improvements
Property and equipment, net
Property and equipment, gross	5,315	5,127
Other equipment
Property and equipment, net
Property and equipment, gross	$ 182	$ 182

Property and Equipment, net (46

Property and Equipment, net (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Property, Plant and Equipment [Abstract]
Operating expense depreciation	$ 589	$ 617

Goodwill (Details Textual)

Goodwill (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Foreign currency translation adjustment	$ 459

Other Current Liabilities (Deta

Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Accrued compensation and benefits	$ 4,111	$ 5,061
Accrued cost of revenue	2,678	2,178
Deferred rent	773	730
Accrued legal fees	469	262
Other accrued expenses	2,569	4,605
Total other current liabilities	$ 10,600	$ 12,836

Line of Credit (Details)

Line of Credit (Details) - Revolving Credit Facility - Credit Agreement - USD ($)	Nov. 02, 2015	Oct. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Line of Credit Facility [Line Items]
Maximum borrowing amount	$ 25,000,000	$ 5,000,000
Borrowing capacity limit, percent of accounts receivable		80.00%
Proceeds from line of credit			$ 0		$ 0
Current borrowing capacity			5,000,000		$ 5,000,000
Minimum liquidity benchmark	$ 17,500,000
Commitment fee percentage paid at closing	0.45%
Unused line fee percentage	0.375%	0.30%
Interest expense, line of credit			0	$ 73,000
Commitment fees amortization			14,000	$ 26,000
Voting stock percentage in foreign subsidiaries	65.00%
Line of credit facility, covenant compliance, minimum cash and revolver availability			7,500,000
Line of credit facility, covenant compliance, minimum cash at lender			$ 5,000,000
LIBOR
Line of Credit Facility [Line Items]
Variable rate	2.75%
Alternative Base Rate
Line of Credit Facility [Line Items]
Variable rate	0.50%
Variable rate minimum	0.50%
Variable rate maximum	1.50%

Other Long Term Liabilities (De

Other Long Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Deferred rent	$ 998	$ 1,186
Income taxes payable	240	249
Total other long term liabilities	$ 1,238	$ 1,435

Contingencies (Details)

Contingencies (Details) $ in Thousands	Aug. 01, 2016USD ($)installment_payment	Aug. 13, 2015	Apr. 30, 2016Patentcounterclaim	Feb. 29, 2008USD ($)Claim	Mar. 31, 2017USD ($)	Apr. 29, 2016Patent	Feb. 16, 2016Patent	Nov. 30, 2015Patent
Akamai '703 Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of claims Company infringed | Claim				4
Aggregate of lost profits, reasonable royalties and price erosion damages | $				$ 45,500
Duration of appeals in the courts		6 years
Akamai '703 Litigation | Settled Litigation
Loss Contingencies [Line Items]
Provision for litigation | $	$ 54,000
Number of quarterly installment payments for litigation settlement | installment_payment	12
Litigation reserve, remaining amount due | $					$ 40,500
Akamai and XO Communications Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of company patents infringed								6
Akamai Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of patents Company was infringing						5
2016 Akamai Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of company patents infringed			2
Number of patents Company was infringing							3
Number of patents company infringed, withdrawn			1
Number of counterclaims | counterclaim			2

Net Loss per Share (Details)

Net Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Net loss	$ (3,337)	$ (5,946)
Basic and diluted weighted average outstanding shares of common stock (in shares)	107,363	102,693
Basic and diluted (in usd per share)	$ (0.03)	$ (0.06)

Net Loss per Share Dilutive Com

Net Loss per Share Dilutive Common Stock (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Excluded outstanding options and restricted stock units (in shares)	2,495	1,082
Employee stock purchase plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Excluded outstanding options and restricted stock units (in shares)	335	424
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Excluded outstanding options and restricted stock units (in shares)	282	134
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Excluded outstanding options and restricted stock units (in shares)	1,878	524

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 14, 2017	Dec. 31, 2016	Feb. 12, 2014
Equity, Class of Treasury Stock [Line Items]
Issuance of preferred stock authorized (in shares)	7,500,000		7,500,000
Employee Stock Purchase Plan
Equity, Class of Treasury Stock [Line Items]
Discount from market price for employees	15.00%
Common Stock reserved for future options and restricted stock awards (in shares)	1,318,000
Employee funds held by company for future purchase of shares	$ 688,000
2007 Equity Incentive Plan
Equity, Class of Treasury Stock [Line Items]
Shares authorized for issuance under Restated 2007 Plan (in shares)	7,763,000
2017 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase amount authorized		$ 25,000,000
2012 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase amount authorized				$ 15,000,000
Remaining authorized repurchase amount		$ 9,500,000

Accumulated Other Comprehensi55

Accumulated Other Comprehensive Loss (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance	$ 137,568
Accumulated other comprehensive income, ending balance	137,951
Foreign Currency
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance	(10,910)
Other comprehensive income before reclassifications	941
Amounts reclassified from accumulated other comprehensive loss	0
Net current period other comprehensive income	941
Accumulated other comprehensive income, ending balance	(9,969)
Unrealized Gains (Losses) on Available for Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance	(128)
Other comprehensive income before reclassifications	30
Amounts reclassified from accumulated other comprehensive loss	0
Net current period other comprehensive income	30
Accumulated other comprehensive income, ending balance	(98)
AOCI
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance	(11,038)
Other comprehensive income before reclassifications	971
Amounts reclassified from accumulated other comprehensive loss	0
Net current period other comprehensive income	971
Accumulated other comprehensive income, ending balance	$ (10,067)

Share-Based Compensation (Detai

Share-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Components of share-based compensation expense
Share-based compensation	$ 3,075	$ 3,496
Cost of services
Components of share-based compensation expense
Share-based compensation	359	473
General and administrative expense
Components of share-based compensation expense
Share-based compensation	1,534	1,826
Sales and marketing expense
Components of share-based compensation expense
Share-based compensation	620	737
Research and development expense
Components of share-based compensation expense
Share-based compensation	562	460
Stock options
Components of share-based compensation expense
Share-based compensation	950	983
Restricted stock units
Components of share-based compensation expense
Share-based compensation	2,028	2,360
ESPP
Components of share-based compensation expense
Share-based compensation	$ 97	$ 153

Share-Based Compensation (Det57

Share-Based Compensation (Details Textual) $ in Thousands	Mar. 31, 2017USD ($)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized share-based compensation expense total	$ 22,101
Share-based compensation expense, remainder of 2016	8,753
Share-based compensation expense, 2017	8,331
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized share-based compensation expense total	6,947
Restricted stock units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized share-based compensation expense total	$ 15,154

Leases and Purchase Commitmen58

Leases and Purchase Commitments (Details) $ in Thousands	Mar. 31, 2017USD ($)
Future minimum lease payments over remaining lease periods
Remainder of 2017	$ 2,652
2,018	3,266
2,019	1,524
2,020	542
2,021	359
Thereafter	55
Total minimum payments	$ 8,398

Leases and Purchase Commitmen59

Leases and Purchase Commitments (Details 1) $ in Thousands	Mar. 31, 2017USD ($)
Minimum purchase commitments
Remainder of 2017	$ 22,262
2,018	16,456
2,019	4,009
2,020	102
2,021	0
Thereafter	0
Total minimum payments	$ 42,829

Leases and Purchase Commitmen60

Leases and Purchase Commitments (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Leases Capital [Abstract]
Outstanding balance for capital leases	$ 0		$ 0
Interest expense related to capital leases	$ 0	$ 35,000

Concentrations (Details)

Concentrations (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)customercountry	Mar. 31, 2016USD ($)customercountry
Concentration Risk [Line Items]
Number of customers who represented 10% or more of total revenue | customer	1	0
Revenues	$ 44,735	$ 41,422
Geographic concentration | Total revenue
Concentration Risk [Line Items]
Number of countries accounting for 10% or more of revenue | country	3	3
United States | Geographic concentration | Total revenue
Concentration Risk [Line Items]
Revenues	$ 27,374	$ 22,410

Income Taxes (Details Textual)

Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 108	$ 158

Segment Reporting and Geograp63

Segment Reporting and Geographic Areas (Details Textual)	3 Months Ended
	Mar. 31, 2017SegmentLocation
Segment Reporting [Abstract]
Number of industry segment | Segment	1
Number of geographic areas | Location	3

Segment Reporting and Geograp64

Segment Reporting and Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue earned by geographic area
Revenues	$ 44,735	$ 41,422
Americas
Revenue earned by geographic area
Revenues	28,196	24,008
EMEA
Revenue earned by geographic area
Revenues	8,456	8,912
Asia Pacific
Revenue earned by geographic area
Revenues	$ 8,083	$ 8,502
Geographic concentration
Revenue earned by geographic area
Percent of revenue	100.00%	100.00%
Geographic concentration | Americas
Revenue earned by geographic area
Percent of revenue	63.00%	58.00%
Geographic concentration | EMEA
Revenue earned by geographic area
Percent of revenue	18.90%	21.50%
Geographic concentration | Asia Pacific
Revenue earned by geographic area
Percent of revenue	18.10%	20.50%

Segment Reporting and Geograp65

Segment Reporting and Geographic Areas (Details 1) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Long-lived assets by geographical area
Long-lived assets	$ 30,204	$ 30,352
Americas
Long-lived assets by geographical area
Long-lived assets	17,432	18,665
International
Long-lived assets by geographical area
Long-lived assets	$ 12,772	$ 11,687

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands		Mar. 31, 2017		Dec. 31, 2016
Commercial paper
Assets:
Total assets measured at fair value	[1]	$ 3,986
Corporate notes and bonds
Assets:
Total assets measured at fair value	[1]	37,690
Quoted Prices In Active Markets for Identical Assets (Level 1) | Commercial paper
Assets:
Total assets measured at fair value	[1]	0
Quoted Prices In Active Markets for Identical Assets (Level 1) | Corporate notes and bonds
Assets:
Total assets measured at fair value	[1]	0
Significant Other Observable Inputs (Level 2) | Commercial paper
Assets:
Total assets measured at fair value	[1]	3,986
Significant Other Observable Inputs (Level 2) | Corporate notes and bonds
Assets:
Total assets measured at fair value	[1]	37,690
Significant Unobservable Inputs (Level 3) | Commercial paper
Assets:
Total assets measured at fair value	[1]	0
Significant Unobservable Inputs (Level 3) | Corporate notes and bonds
Assets:
Total assets measured at fair value	[1]	0
Recurring basis
Assets:
Total assets measured at fair value		41,832		$ 44,794
Recurring basis | Money market funds
Assets:
Total assets measured at fair value		116	[2]	301	[3]
Recurring basis | Certificate of deposit
Assets:
Total assets measured at fair value		40	[1]	40	[4]
Recurring basis | Commercial paper
Assets:
Total assets measured at fair value	[4]			8,222
Recurring basis | Corporate notes and bonds
Assets:
Total assets measured at fair value	[4]			36,231
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1)
Assets:
Total assets measured at fair value		116		301
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Money market funds
Assets:
Total assets measured at fair value		116	[2]	301	[3]
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Certificate of deposit
Assets:
Total assets measured at fair value		0	[1]	0	[4]
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Commercial paper
Assets:
Total assets measured at fair value	[4]			0
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Corporate notes and bonds
Assets:
Total assets measured at fair value	[4]			0
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Total assets measured at fair value		41,716		44,493
Recurring basis | Significant Other Observable Inputs (Level 2) | Money market funds
Assets:
Total assets measured at fair value		0	[2]	0	[3]
Recurring basis | Significant Other Observable Inputs (Level 2) | Certificate of deposit
Assets:
Total assets measured at fair value		40	[1]	40	[4]
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial paper
Assets:
Total assets measured at fair value	[4]			8,222
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate notes and bonds
Assets:
Total assets measured at fair value	[4]			36,231
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Total assets measured at fair value		0		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Money market funds
Assets:
Total assets measured at fair value		0	[2]	0	[3]
Recurring basis | Significant Unobservable Inputs (Level 3) | Certificate of deposit
Assets:
Total assets measured at fair value		$ 0	[1]	0	[4]
Recurring basis | Significant Unobservable Inputs (Level 3) | Commercial paper
Assets:
Total assets measured at fair value	[4]			0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate notes and bonds
Assets:
Total assets measured at fair value	[4]			$ 0
[1]	Classified in marketable securities
[2]	Classified in cash and cash equivalents
[3]	Classified in cash and cash equivalents
[4]	Classified in marketable securities

Fair Value Measurements (Deta67

Fair Value Measurements (Details Textual)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Cash equivalent maturity period	3 months