Tangoe Inactive 10-K16 Mar 152014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2014	Mar. 06, 2015	Jun. 30, 2014
Document and Entity Information
Entity Registrant Name	TANGOE INC
Entity Central Index Key	1182325
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$544,124,667
Entity Common Stock, Shares Outstanding		38,928,948
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$51,279	$43,182
Accounts receivable, less allowances of $283 and $588, respectively	56,948	43,273
Prepaid expenses and other current assets	5,901	4,537
Total current assets	114,128	90,992
COMPUTERS, FURNITURE AND EQUIPMENT-NET	5,217	4,317
OTHER ASSETS:
Intangible assets-net	28,753	36,637
Goodwill.	65,348	65,963
Security deposits and other non-current assets	1,566	935
TOTAL ASSETS	215,012	198,844
CURRENT LIABILITIES:
Accounts payable	10,733	9,570
Accrued expenses	8,283	8,871
Deferred revenue-current portion	10,858	9,063
Notes payable-current portion	1,400	1,831
Other current liabilities		160
Total current liabilities	31,274	29,495
OTHER LIABILITIES:
Deferred taxes and other non-current liabilities	4,372	3,598
Deferred revenue-less current portion	1,030	1,536
Notes payable-less current portion	166	203
Total liabilities	36,842	34,832
COMMITMENTS AND CONTINGENCIES (NOTE 15)
STOCKHOLDERS' EQUITY
Common stock, par value $0.0001 per share-150,000,000 shares authorized as of December 31, 2013 and 2014; 38,160,928 and 38,621,169 shares issued and outstanding as of December 31, 2013 and 2014, respectively	4	4
Additional paid-in capital	215,491	202,808
Warrants for common stock	10,610	10,610
Accumulated deficit	-45,859	-48,795
Accumulated other comprehensive loss	-2,076	-615
Total stockholders' equity	178,170	164,012
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$215,012	$198,844

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Condensed Consolidated Balance Sheets
Accounts receivable, allowances (in dollars)	$588	$283
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	38,621,169	38,160,928
Common stock, shares outstanding	38,621,169	38,160,928

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue:
Recurring technology and services	$189,467	$168,484	$137,979
Strategic consulting, software licenses and other	23,009	20,430	16,533
Total revenue	212,476	188,914	154,512
Cost of revenue:
Recurring technology and services	88,510	76,228	63,976
Strategic consulting, software licenses and other	8,954	8,750	6,627
Total cost of revenue	97,464	84,978	70,603
Gross profit	115,012	103,936	83,909
Operating expenses:
Sales and marketing	39,433	33,382	24,840
General and administrative	37,963	34,765	29,317
Research and development	22,633	19,570	16,696
Depreciation and amortization	9,779	10,452	8,666
Restructuring charge		654
Income from operations	5,204	5,113	4,390
Other income (expense), net
Interest expense	-103	-401	-943
Interest income	35	60	80
Other income (expense)	114	1,201	-9
Income before income tax provision	5,250	5,973	3,518
Income tax provision	2,314	1,011	480
Net income (loss)	$2,936	$4,962	$3,038
Income (loss) per common share:
Basic (in dollars per share)	$0.08	$0.13	$0.08
Diluted (in dollars per share)	$0.07	$0.12	$0.08
Weighted average number of common shares:
Basic (in shares)	38,642	37,706	36,492
Diluted (in shares)	41,157	40,472	39,870

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net income	$2,936	$4,962	$3,038
Foreign currency translation adjustment	-1,461	-797	223
Comprehensive income	$1,475	$4,165	$3,261

Condensed_Consolidated_Stateme2

Condensed Consolidated Statement of Changes in Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Warrant [Member]	Notes Receivable Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Warrant [Member]	Notes Receivable Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2011	$3	$142,905	$10,610	($93)	($56,795)	($41)	$96,589
Balance (in shares) at Dec. 31, 2011	33,152,592
Increase (Decrease) in Stockholders' Equity
Net income					3,038		3,038
Foreign currency translation adjustment						223	223
Securities issued in connection with acquisition		1,984					1,984
Securities issued in connection with acquisition (in shares)	165,775
Issuance of shares upon initial public/follow-on offering, net of issuance costs	1	37,728					37,729
Issuance of shares upon initial public/follow-on offering, net of issuance costs (in shares)	2,200,000
Issuance of shares from exercise of stock options		4,081					4,081
Issuance of shares from exercise of stock options (in shares)	1,859,557
Issuance of shares from exercise of stock warrants		93					93
Issuance of shares from exercise of stock warrants (in shares)	449,877
Issuance of shares in payment of board of director fees		21					21
Issuance of shares in payment of board of director fees (in shares)	1,021
Issuance of shares from executive stock grant		150					150
Issuance of shares from executive stock grant (in shares)	9,639
Repurchase of common stock		-4,396					-4,396
Repurchase of common stock (in shares)	-357,751
Repayment of notes receivable				93			93
Stock-based compensation		9,015					9,015
Balance at Dec. 31, 2012	4	191,581	10,610		-53,757	182	148,620
Balance (in shares) at Dec. 31, 2012	37,480,710
Increase (Decrease) in Stockholders' Equity
Net income					4,962		4,962
Foreign currency translation adjustment						-797	-797
Issuance of shares to employees and board of directors		761					761
Issuance of shares to employees and board of directors (in shares)	76,916
Issuance of shares from exercise of stock options		4,826					4,826
Issuance of shares from exercise of stock options (in shares)	1,015,817
Issuance of shares from exercise of stock warrants		35					35
Issuance of shares from exercise of stock warrants (in shares)	14,907
Issuance of shares from executive stock grant (in shares)	92,338
Repurchase of common stock		-6,893					-6,893
Repurchase of common stock (in shares)	-519,760
Stock-based compensation		12,498					12,498
Balance at Dec. 31, 2013	4	202,808	10,610		-48,795	-615	164,012
Balance (in shares) at Dec. 31, 2013	38,160,928
Increase (Decrease) in Stockholders' Equity
Net income					2,936		2,936
Foreign currency translation adjustment						-1,461	-1,461
Issuance of shares to employees and board of directors		4,479					4,479
Issuance of shares to employees and board of directors (in shares)	301,204
Issuance of shares from exercise of stock options		2,100					2,100
Issuance of shares from exercise of stock options (in shares)	453,275
Issuance of shares from exercise of stock warrants (in shares)	710
Issuance of shares from vesting of restricted stock units (in shares)	284,303
Repurchase of common stock		-7,915					-7,915
Repurchase of common stock (in shares)	-579,251
Stock-based compensation		14,019					14,019
Balance at Dec. 31, 2014	$4	$215,491	$10,610		($45,859)	($2,076)	$178,170
Balance (in shares) at Dec. 31, 2014	38,621,169

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net income	$2,936	$4,962	$3,038
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of debt discount	50	305	801
Amortization of leasehold interest	-99	-99	-99
Depreciation and amortization	9,779	10,452	8,666
Restructuring charge		654
Increase (decrease) in deferred rent liability	-36	-47	19
Amortization of marketing agreement intangible assets	493	305	174
Allowance for doubtful accounts	261	106	96
Deferred income taxes	989	400	183
Stock based compensation	18,498	13,259	9,165
Foreign exchange loss (gain)	39	-138	46
Decrease in fair value of contingent consideration		-1,041
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	-14,283	-5,089	-5,883
Prepaid expenses and other assets	-1,029	-407	170
Other assets	-450	191	-19
Accounts payable	1,595	32	1,310
Accrued expenses	-514	-2,409	885
Deferred revenue	1,317	-23	-1,864
Net cash provided by operating activities	19,546	21,413	16,688
Investing activities:
Purchases of computers, furniture and equipment	-3,569	-2,643	-1,820
Cash paid in connection with acquisitions, net of cash received	-881	-20,845	-38,410
Net cash used in investing activities	-4,450	-23,488	-40,230
Financing activities:
Repayment of debt	-858	-1,006	-9,676
Borrowing of debt	177		778
Proceeds from public offerings, net of issuance costs			37,729
Repurchase of common stock	-7,915	-8,590	-2,700
Proceeds from repayment of notes receivable			93
Proceeds from exercise of stock options and stock warrants	2,100	4,861	4,174
Net cash (used in) provided by financing activities	-6,496	-4,735	30,398
Effect of exchange rate on cash	-503	-219	-52
Net (decrease) increase in cash and cash equivalents	8,097	-7,029	6,804
Cash and cash equivalents, beginning of period	43,182	50,211	43,407
Cash and cash equivalents, end of period	$51,279	$43,182	$50,211

Organization_Description_of_Bu

Organization, Description of Business	12 Months Ended
Organization, Description of Business	Dec. 31, 2014
Organization, Description of Business
Organization, Description of Business
	1. Organization, Description of Business
	Nature of Operations
	Tangoe, Inc. (the "Company"), a Delaware corporation, was incorporated on February 9, 2000 as TelecomRFQ, Inc. During 2001, the Company changed its name to Tangoe, Inc. The Company provides connection lifecycle management software and related services to a wide range of global enterprises and service providers. Connection lifecycle management encompasses the entire spectrum of an enterprise's connection-based assets and services, such as voice and data services, mobile devices and usage, cloud software infastructure and services, machine to machine connections, enterprise social and information technology connections, including planning and sourcing, procurement and provisioning, inventory and usage management, mobile device management, or MDM, real-time telecommunication expense management, or rTEM, invoice processing and payment, expense allocation and accounting and asset decommissioning and disposal. The Company's on-demand Matrix Solution Suite is a suite of software designed to manage IT expenses and to optimize the complex processes and expenses associated with this connection lifecycle management. The Company's Matrix Solution Suite and related services have historically focused on enterprises' fixed and mobile connections and related assets, usage, expenses and analytics. The Company has and continues to enhance and expand its software and service offerings by developing and implementing additional capabilities, including capabilities designed to manage the entire range of an enterprise’s IT expenses, and to turn on, track, manage, secure and support various connections in an enterprise's connection lifecycle, such as cloud software and services, machine to machine, enterprise social and information technology connections. The Company refers to its Matrix Solution Suite and related service offerings as Matrix.
	Public Offerings
	In April 2012, the Company completed a public offering whereby it sold 2,200,000 shares of common stock at a price to the public of $18.50 per share. The Company received proceeds from this public offering of $37.7 million, net of underwriting discounts and commissions and other offering costs of $3.0 million.
	As part of this public offering, an additional 7,000,000 shares of common stock were sold by certain existing stockholders at a price to the public of $18.50 per share, including 1,200,000 shares sold by such stockholders upon the exercise of the underwriters' option to purchase additional shares. The Company did not receive any proceeds from the sale of such shares by the selling stockholders.
	The Company's common stock is traded on the NASDAQ Global Select Market.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2014
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies
	2. Summary of Significant Accounting Policies
	Consolidation and Basis of Preparation—The consolidated financial statements include the financial results of Tangoe, Inc. and its wholly owned subsidiaries Tangoe EU B.V., Tangoe (China) Co., Ltd., Tangoe-PL, Inc., Tangoe Canada, Inc., Tangoe Europe, Limited, Tangoe Deutschland GmbH (formerly oneTEM GmbH) acquired by the Company on April 18, 2013, Tangoe India Softek Services Private, Limited formed by the Company in August 2012, described further in Note 4, Tangoe PTY Ltd. (Australia), Tangoe do Brasil Servicos Tecnologicos LTDA (Brazil) and Tangoe (Singapore) Co., Pte. Ltd. formed on January 14, 2014. Intercompany balances and transactions have been eliminated in consolidation.
	Cash and Cash Equivalents—The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. Cash equivalents consist primarily of a variable interest rate account. As of December 31, 2014, the Company had no restrictions on its $51.3 million of cash and cash equivalents.
	Revenue Recognition—Recurring technology and services revenue consists of subscription-based fees, software subscription license fees, software maintenance fees and hosting fees related to the use of the Company's solution to manage its customers' communications expenses. Strategic consulting, software licenses and other revenues consist of fees for contract negotiations, bill audits, sale of mobile telecommunication accessories, professional services and perpetual software licenses. The Company recognizes revenue when persuasive evidence of an arrangement exists, pricing is fixed or determinable, collection is reasonably assured and delivery or performance of service has occurred.
	Recurring technology and services subscription-based fees, software subscription license fees, software maintenance fees and hosting fees are recognized ratably over the term of the period of service. The subscription-based services the Company provides include help desk, asset procurement and provisioning and carrier dispute resolution. The Company follows the provisions of Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 605-10-S99, Revenue Recognition, and ASC 605-25, Revenue Recognition with Multiple-Element Arrangements. When contracts contain multiple elements, the Company evaluates each element in the contract to determine whether it represents a separate unit of accounting. In order to account for deliverables in a multiple-deliverable arrangement as separate units of accounting, the deliverables must have stand-alone value upon delivery. When multiple deliverables included in an arrangement are separable into different units of accounting, the arrangement consideration is allocated to the identified separate units of accounting based on their relative selling price. Multiple-deliverable arrangements accounting guidance provides a hierarchy to use when determining the relative selling price for each unit of accounting. Vendor-specific objective evidence ("VSOE") of selling price, based on the price at which the item is regularly sold by the vendor on a stand-alone basis, is used if it exists. If VSOE of selling price is not available, third-party evidence ("TPE") of selling price is used to establish the selling price if it exists. If VSOE of selling price and TPE of selling price are not available, the best estimate of selling price ("BESP") is used. The Company determines the BESP for a product or service by considering multiple factors including, but not limited to, integration of project offerings, volume and location of telecommunication spend to be managed and discounting practices.
	The Company has determined that implementation fees associated with recurring technology and services engagements do not have stand-alone value and therefore do not represent a separate unit of accounting. As such, they are recognized over the estimated expected life of the customer relationship which the Company estimates to be equal to twice the contract life calculated on a per-customer basis and the Company recognizes implementation fees ratably over this period.
	Software license fees consist of fees paid for a perpetual license agreement for the Company's technology, which are recognized in accordance with ASC 985-605, Software Revenue Recognition. VSOE for maintenance and support is established by a stated renewal rate included in the license arrangement or rates charged in stand-alone sales of maintenance and support. If software maintenance fees are provided for in the license fee or at a discount pursuant to a license agreement, a portion of the license fee equal to the fair market value of these amounts is allocated to software maintenance revenue based on the value established by independent sales of such maintenance services to customers.
	Professional services related to the implementation of the Company's software products ("Consulting Services") are generally performed on a fixed fee basis under separate service arrangements. Consulting Services revenue is recognized as the services are performed by measuring progress towards completion based upon either costs or the achievement of certain milestones. The Company also provides contract negotiation and bill audit services ("Strategic Sourcing Services") on behalf of its customers, which are generally performed on a contingency fee basis, with the Company's fees being based on a percentage of the savings the Company achieves for the customer. Revenue from Strategic Sourcing Services engagements is recognized as savings are secured for the customer or as work is completed. The revenue is generally billed as a base fee and a contingency fee based upon the amount of savings secured multiplied by the contingency fee percentage to which the Company is entitled.
	In accordance with ASC 985-605, Income Statement Characterization of Reimbursements Received for Out-of-Pocket Expenses, the Company classifies reimbursed expenses as revenue and the related expense within cost of revenue in the accompanying consolidated statements of operations. For the years ended December 31, 2012, 2013 and 2014, reimbursed expenses of $0.2 million, $0.1 million and $0.1 million, respectively, were included in revenue.
	Software Development Costs—The Company expenses research and development costs as incurred. The Company has evaluated the establishment of technological feasibility of its products in accordance with ASC 350, Accounting for the Costs of Computer Software to be Sold, Leased or Otherwise Marketed. The Company has concluded that technological feasibility is not established until the development stage of the product is nearly complete. The time period during which costs could be capitalized from the point of reaching technological feasibility until the time of general release is very short and, consequently, the amounts that could be capitalized are not material to the Company's financial position or results of operations. Therefore, the Company charges all such costs to research and development in the period incurred.
	Computers, Furniture and Equipment—Computers, furniture and equipment are stated at historical cost. Depreciation of computers, furniture and equipment is provided for, commencing when the assets are placed in service, using the straight-line method over the estimated useful lives of the assets, which range from three to seven years. Leasehold improvements are amortized over the lease term, which is shorter than the useful lives.
	Deferred Rent—The Company has operating leases for various office spaces, some of which include a rent escalation clause. GAAP requires that rental expense be reflected on a straight-line basis over the life of the lease. This results in deferred rent on the consolidated balance sheet.
	Income Taxes—The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company's financial statements or tax returns. Deferred tax assets and liabilities are measured based on the difference between the financial statement carrying amounts and the respective tax basis of assets and liabilities and net operating loss carryforwards available for tax reporting purposes using the applicable tax rates for the years in which the differences are expected to reverse. A valuation allowance is recorded on deferred tax assets unless realization is determined to be more likely than not.
	Concentration of Credit Risk—Financial instruments that subject the Company to risk of loss consist principally of accounts receivable. For the years ended December 31, 2012, 2013 and 2014, no strategic alliance partner or individual end customer represented greater than 10% of total revenue. As of December 31, 2013 and 2014, no strategic alliance partner or individual end customer represented a greater than 10% concentration of total accounts receivable. The Company has balances with financial institutions in excess of the Federal Deposit Insurance Corporation limit. The Company believes that credit risks associated with these concentrations are limited, as the amounts are held by major financial institutions in the United States.
	Accounts Receivable and Allowance for Doubtful Accounts—Accounts receivable represent trade receivables from customers when the Company has invoiced for software solutions and/or services and the Company has not yet received payment. The Company presents accounts receivable net of an allowance for doubtful accounts for estimated losses resulting from the inability of customers to make required payments. The allowance for possible losses is estimated based upon a review of outstanding receivables, historical collection information and existing economic conditions. Accounts receivable are charged against the allowance (written-off) when substantially all collection efforts cease. Any change in the assumptions used in analyzing a specific account receivable might result in an additional allowance for doubtful accounts being recognized in the period in which the change occurs. Based on the information available, the Company's management believes that the allowance for doubtful accounts as of December 31, 2013 and 2014 is adequate. For certain transactions, the Company has met the requirements to recognize revenue in advance of physically invoicing the customer. In these instances, the Company records unbilled receivables for the amount that will be due from the customer upon invoicing. As of December 31, 2013 and 2014, unbilled receivables included on the accompanying consolidated balance sheets were $4.6 million and $11.2 million, respectively.
	Cash Held on Behalf of Customers—The Company's services for some customers include the payment of the customer's communications invoices directly to the carrier. Such payments are made from separate bank accounts set up on behalf of each such customer, which are funded by the customer shortly in advance of the Company making any disbursements. These accounts are used only for the payment of the customer's invoices and the Company does not fund these accounts, therefore the balances in these accounts are not included on the accompanying consolidated balance sheets. As of December 31, 2013 and 2014, the total funds held by the Company on behalf of its customers were $11.1 million and $15.5 million, respectively.
	Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reported period. Actual results could differ from those estimates.
	Income Per Share—Income per common share is calculated in accordance with the provisions of ASC 260, Earnings per Share. Under ASC 260, public companies are required to report both basic and diluted income per common share. Basic and diluted income per share is computed by dividing net income for the period by the weighted average number of shares of common stock outstanding during the period. The calculation of diluted income per share gives effect to potential common shares; however, potential common shares are excluded if their effect is antidilutive. Potential common shares are composed of shares of common stock issuable upon the exercise of outstanding stock options and warrants and on the vesting of restricted stock units.
	Business Combinations and Valuation of Intangible Assets—The Company accounts for business combinations in accordance with ASC 805, Business Combinations. ASC 805 requires business combinations to be accounted for using the purchase method of accounting and includes specific criteria for recording intangible assets separate from goodwill and promotes greater use of fair values in financial reporting. Results of operations of acquired businesses are included in the financial statements of the acquiring company from the date of acquisition. Net assets of the acquired company are recorded at their fair value at the date of acquisition.
	Impairment of Goodwill and Certain Other Long-Lived Assets—As required by ASC 350, Goodwill and Other Intangible Assets, the Company accounts for goodwill acquired in acquisition of a business based upon the excess fair value of consideration transferred over the fair value of net assets acquired in the business combination. Goodwill is tested for impairment on an annual basis as of December 31, and, when specific circumstances dictate, between annual tests. The Company has one reporting unit. When impaired, the carrying value of goodwill is written down to fair value. The goodwill impairment test involves evaluating qualitative information to determine if it is more than 50% likely that the fair value of a reporting unit is less than its carrying value in determining if the traditional two-step goodwill impairment test described below must be applied. The first step, identifying a potential impairment, compares the fair value of a reporting unit with its carrying amount, including goodwill. If the carrying value of the reporting unit exceeds its fair value, the second step would need to be conducted; otherwise, no further steps are necessary as no potential impairment exists. The second step, measuring the impairment loss, compares the implied fair value of the reporting unit goodwill with the carrying amount of that goodwill. Any excess of the reporting unit goodwill carrying value over the respective implied fair value is recognized as an impairment loss. There was no impairment of goodwill for the years ended December 31, 2013 and 2014.
	The Company accounts for the impairment of long-lived assets other than goodwill in accordance with ASC 360, Accounting for the Impairment or Disposal of Long-Lived Asset. In accordance with ASC 360, the Company accounts for long lived assets, including purchased-intangible assets, based upon the fair value of assets received. Purchased-intangible assets are amortized on a straight line, ranging from two to ten years. The Company performs a review of purchased-intangible assets whenever events or changes in circumstances indicate that the useful life is shorter than the Company originally estimated or that the carrying amount of assets may not be recoverable. If such facts and circumstances exist, the Company assesses the recoverability of purchased-intangible assets by comparing the future undiscounted cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Impairments, if any, are based on the excess of the carrying amount over the fair value of those assets. If the useful life of the asset is shorter than originally estimated, the Company accelerates the rate of amortization and amortizes the remaining carrying value over the new shorter useful life. There was no impairment of purchased-intangible assets identified for the years ended December 31, 2013 and 2014.
	Stock-Based Compensation—The Company follows ASC 718, Share-based Payment, for recording stock-based compensation. This statement requires recording stock-based awards at fair value. The Company also complies with the provisions of ASC 505, Accounting for Equity Instruments That Are Issued to Other Than Employees for Acquiring, or in Conjunction with Selling, Goods or Services, with respect to stock option grants to non-employees.
	Foreign Currency Translation—In 2014, the Company had wholly owned international subsidiaries in the Netherlands, China, Canada, the United Kingdom, India, Germany, Australia, Brazil and Singapore. For 2013 and 2014, the international operations were immaterial to the overall consolidated financial statements of the Company. Gains and losses on foreign currency translation of the financial statements of foreign operations whose functional currency is other than the U.S. dollar are included in accumulated other comprehensive income. Assets and liabilities of foreign operations are translated at year-end exchange rates and revenue and expense are translated at average rates in effect during the year. Foreign currency exchange gains and losses from transactions and balances denominated in a currency other than the functional currency are recorded in general and administrative expenses on the consolidated statement of operations.
	Comprehensive Income—Comprehensive income consists of net income and other comprehensive items. Other comprehensive items include foreign currency translation adjustments.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	12 Months Ended
Recent Accounting Pronouncements	Dec. 31, 2014
Recent Accounting Pronouncements
Recent Accounting Pronouncements
	3. Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"), which supersedes nearly all existing revenue recognition guidance under GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-09 defines a five step process to achieve this core principle and, in doing so, more judgments and estimates may be required within the revenue recognition process than are required under existing GAAP. The standard is effective for annual periods beginning after December 15, 2016, and interim periods therein, using either of the following transition methods: (i) a full retrospective approach reflecting the application of the standard in each prior reporting period with the option to elect certain practical expedients, or (ii) a retrospective approach with the cumulative effect of initially adopting ASU 2014-09 recognized at the date of adoption (which includes additional footnote disclosures). The Company is currently evaluating the impact of its pending adoption of ASU 2014-09 on its consolidated financial statements and has not yet determined the method by which it will adopt the standard in 2017.
	In June 2014, the FASB issued ASU No. 2014-12 (Topic 718)—Compensation—Stock Compensation ("ASU 2014-12") which provides guidance that a performance target that affects vesting of a share-based payment and that could be achieved after the requisite service period is a performance condition. As a result, the target is not reflected in the estimation of the award's grant date fair value. Compensation cost for such an award would be recognized over the required service period, if it is probable that the performance condition will be achieved. ASU 2014-12 is effective for all entities for annual periods beginning after December 15, 2015 and interim periods within those annual periods. ASU 2014-12 should be applied on a prospective basis to awards that are granted or modified on or after the effective date. The adoption of this standard is not expected to have an impact on the Company's consolidated financial statements.

Business_Combinations

Business Combinations	12 Months Ended
Business Combinations	Dec. 31, 2014
Business Combinations
Business Combinations
	4. Business Combinations
	HCL Expense Management Services, Inc.
	In December 2010, the Company entered into an Asset Purchase Agreement (the "HCL-EMS APA") to acquire substantially all of the assets and certain liabilities of HCL Expense Management Services, Inc. ("HCL-EMS"). Pursuant to the terms of the HCL-EMS APA, the Company paid $3.0 million in cash at closing, which took place on January 25, 2011 ("HCL-EMS Closing Date"). In addition, the Company was obligated to pay deferred cash consideration following each of the first and second anniversaries of the HCL-EMS Closing Date, pursuant to an earn-out formula based upon specified revenues from specified customers acquired from HCL-EMS, subject to set-off rights of the Company with respect to indemnities given by HCL-EMS under the HCL-EMS APA. The Company valued this contingent consideration at $3.4 million. In May 2012, the Company and HCL-EMS agreed that the amount of the first year earn-out would be $1.9 million and the Company paid that amount to HCL-EMS. In April 2013, the Company and HCL-EMS agreed that the gross amount of the second year earn-out would be $1.9 million. In early August 2013, the Company paid $1.0 million of the second year earn-out to HCL-EMS, and retained the balance of the second year earn-out in the amount of $0.9 million pending resolution of an outstanding indemnity matter. In September 2014, the Company paid $0.4 million in satisfaction of the third-party claim that triggered the indemnity matter and the contingent consideration balance was reduced by this amount. In connection with this transaction, the Company has recorded on its consolidated statement of operations in 2011 and 2013 a restructuring charge related to terminating the use of the former HCL-EMS leased facility in Rutherford, New Jersey that is subject to a lease assumed by the Company in connection with the acquisition.
	HCL-EMS Purchase Price Allocation
	The allocation of the total purchase price of HCL-EMS' net tangible and identifiable intangible assets was based upon the estimated fair value of those assets as of the HCL-EMS Closing Date. The Company allocated the excess of purchase price over the identifiable intangible and net tangible assets to goodwill. The following table presents the breakdown between cash and contingent consideration and the allocation of the total purchase price (in thousands):

	Cash		$	3,000
	Fair value of contingent consideration			3,390

			$	6,390


	Allocation of Purchase Consideration:
	Accounts receivable		$	2,269
	Prepaid and other current assets			125
	Property and equipment			273
	Intangible assets			2,700
	Goodwill			2,243
	Deposits and non-current assets			170
	Accounts payable			(229	)
	Accrued expenses			(1,042	)
	Deferred revenue			(119	)

			$	6,390


	The goodwill related to the HCL-EMS acquisition is tax deductible. The Company estimated the fair value of intangible assets using the income, cost and market approaches to value the identifiable intangible assets, which are subject to amortization. The following table presents the Company's estimates of fair value of the intangible assets acquired:

	Description		Fair Value			Weighted
			(in thousands)			Average
						Useful Life
						(in years)
	Technology		$	840			4.0
	Customer relationships			1,860			9.0

	Total intangible assets		$	2,700


	Anomalous Networks, Inc.
	On January 10, 2012 (the "Anomalous Acquisition Date"), the Company entered into a Share Purchase Agreement (the "Anomalous Purchase Agreement") with Anomalous Networks Inc., a corporation incorporated under the laws of Canada ("Anomalous"), and the shareholders of Anomalous, under which the Company agreed to purchase all of the outstanding equity of Anomalous (the "Anomalous Share Purchase"). This acquisition reflects the Company's strategy to broaden its suite of offerings and to provide real-time telecommunication expense management capabilities. On the same day, the Anomalous Share Purchase was effected in accordance with the terms of the Anomalous Purchase Agreement with the Company acquiring all of the outstanding equity of Anomalous for aggregate consideration of (i) approximately $3,500,000 in cash paid at the closing, (ii) $979,000 in cash payable on the first anniversary of the closing, (iii) 165,775 unregistered shares of the Company's common stock and (iv) 132,617 unvested and unregistered shares of the Company's common stock with vesting based on achievement of revenue targets relating to sales of Anomalous products and services for periods through January 31, 2013. The Company paid the full $979,000 of deferred cash consideration in January 2013. In March 2013, the 132,617 unvested and unregistered shares of the Company's common stock were cancelled and retired because the revenue targets related to sales of Anomalous products and services were not achieved.
	Anomalous Purchase Price Allocation
	The allocation of the total purchase price of Anomalous' net tangible and identifiable intangible assets was based upon the estimated fair value of those assets as of January 10, 2012. In accordance with Accounting Standards Classification ("ASC") 805, Business Combinations, the Company valued the 165,775 of unregistered shares of common stock by using the closing price of the Company's common stock on the NASDAQ Global Market on the acquisition date and applying a 20% marketability discount to the fair value of the unregistered shares. The marketability discount was applied since the unregistered shares were subject to a lock-up period of one year. The Company allocated the excess of purchase price over the identifiable intangible and net tangible assets to goodwill. The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

	Purchase consideration:
	Cash		$	3,521
	Common stock			1,984
	Deferred cash consideration			1,495

			$	7,000


	Allocation of Purchase Consideration:
	Current assets		$	1,140
	Property and equipment			47
	Other assets			10
	Identifiable intangible assets			2,857
	Goodwill			4,477

	Total assets acquired			8,531
	Accounts payable and accrued expenses			(394	)
	Deferred taxes			(767	)
	Deferred revenue			(370	)

		$	7,000


The goodwill and identifiable intangible assets related to the Anomalous acquisition are not tax deductible. The Company estimated the fair value of intangible assets using the income, cost and market approaches to value the identifiable intangible assets, which are subject to amortization. The following table presents the Company's estimates of fair value of the identifiable intangible assets acquired (in thousands):

Description		Fair Value			Weighted
		(in thousands)			Average
					Useful Life
					(in years)
Technology		$	2,017			5.0
Non-compete covenants			553			2.0
Customer relationships			236			4.0
Tradenames			51			3.0

Total identifiable intangible assets		$	2,857


ttMobiles Limited
On February 21, 2012 (the "ttMobiles Acquisition Date"), the Company entered into a Share Purchase Agreement (the "ttMobiles Purchase Agreement"), with the holders of all of the issued share capital of ttMobiles Limited, a private limited company incorporated in England ("ttMobiles"), under which the Company agreed to purchase all of the issued share capital of ttMobiles (the "ttMobiles Share Purchase"). On the same day, the ttMobiles Share Purchase was effected in accordance with the terms of the ttMobiles Purchase Agreement, with the Company acquiring all of the outstanding equity of ttMobiles for aggregate consideration of (i) £4.0 million in cash paid at the closing, and (ii) £1.5 million in cash payable on the first anniversary of the closing (the "Deferred Consideration"). The Company paid the full £1.5 million of Deferred Consideration in February 2013.
ttMobiles Purchase Price Allocation
The allocation of the total purchase price of ttMobiles' net tangible and identifiable intangible assets was based upon the estimated fair value of those assets as of February 21, 2012. The Company allocated the excess of purchase price over the identifiable intangible and net tangible assets to goodwill. The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

Purchase consideration:
Cash		$	6,359
Deferred cash consideration			2,315

		$	8,674


Allocation of Purchase Consideration:
Current assets		$	2,469
Property and equipment			188
Identifiable intangible assets			4,288
Goodwill			3,557

Total assets acquired			10,502
Accounts payable and accrued expenses			(848	)
Deferred taxes			(954	)
Deferred revenue			(26	)

		$	8,674


The goodwill and identifiable intangible assets related to the ttMobiles acquisition are not tax deductible. The Company estimated the fair value of intangible assets using the income, cost and market approaches to value the identifiable intangible assets, which are subject to amortization. The following table presents the Company's estimates of fair value of the identifiable intangible assets acquired (in thousands):

Description		Fair Value			Weighted
		(in thousands)			Average
					Useful Life
					(in years)
Customer relationships		$	2,606			9.0
Technology			1,178			5.0
Tradenames			388			4.0
Non-compete covenants			116			2.0

Total identifiable intangible assets		$	4,288


Symphony Teleca Services, Inc.
On August 8, 2012, the Company entered into an Asset Purchase Agreement (the "Symphony Purchase Agreement") with Symphony Teleca Services, Inc., a Delaware corporation ("Symphony"), under which the parties agreed to the purchase by the Company of Symphony's telecommunications expense management business (the "TEM Business") through an asset purchase (the "Symphony Acquisition"). As part of the Symphony Acquisition and also on August 8, 2012, a newly formed subsidiary of the Company, Tangoe India Softek Services Private Limited, an Indian private limited company ("Tangoe India"), entered into a Business Purchase Agreement (the "Indian Purchase Agreement") with Symphony Services Corporation (India) Private Limited ("Symphony India") with respect to the purchase of certain assets and hiring of employees of the acquired business located in India. On the same day, the Symphony Acquisition was effected in accordance with the terms of the Symphony Purchase Agreement. At the closing of the Symphony Acquisition, the Company acquired the TEM Business for net consideration of $40.2 million, subject to certain adjustments (the "Cash Purchase Price"), payable as described below, plus an earn-out payable in the amount of up to $4.0 million based on achievement of revenue targets for the acquired business for periods through June 30, 2013. No earn-out became payable because the revenue targets were not achieved. The Cash Purchase Price, after giving effect to certain adjustments, was payable as follows: (i) approximately $29.2 million in cash paid at the closing, (ii) approximately $4.4 million in cash payable on the six-month anniversary of the closing, which included $2.5 million related to the Indian Purchase Agreement, and (iii) approximately $6.4 million in cash payable on the one-year anniversary of the closing. As part of the Symphony Acquisition, the Company acquired a balance sheet for the TEM Business, which included net assets of approximately $5.4 million. The Company made the six-month anniversary payment of $4.4 million in February 2013. The full installment due on August 8, 2013 of approximately $6.4 million, and amounts that became payable under the earn-out, were subject to set-off rights of the Company with respect to indemnities given by Symphony under the Symphony Purchase Agreement. Among other things, these indemnity obligations related to representations and warranties given by Symphony under the Symphony Purchase Agreement and by Symphony India under the Indian Purchase Agreement. Certain of the indemnities were subject to limitations, including a threshold and deductible, certain caps and limited survival periods. The Company made a payment on the one-year anniversary of the closing in the amount of $4.9 million, consisting of the one-year anniversary payment of $6.4 million less $1.3 million withheld pending the resolution of certain indemnity matters, and less a net asset adjustment based on the final closing balance sheet of $0.2 million. In October 2013, the Company and Symphony resolved the indemnity matters and the Company paid the $1.3 million that it had previously deducted from the one-year anniversary payment. During a post-closing transition period that lasted through February 2013, Symphony and Symphony India provided to the Company certain transition services, pending completion of the opening of certain Tangoe India facilities, the procurement of certain Indian tax registrations and the subsequent transfer to Tangoe India of the Indian assets and employees being hired. These services included making available to the Company on a continuing basis the services previously provided by Symphony India to the TEM Business.
Symphony Purchase Price Allocation
The allocation of the total purchase price of Symphony's net tangible and identifiable intangible assets was based upon estimated fair values of those assets as of August 8, 2012. The Company allocated the excess of purchase price over the identifiable intangible and net tangible assets to goodwill. The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

Purchase consideration:
Cash		$	29,208
Deferred cash consideration			10,793

		$	40,001


Allocation of Purchase Consideration:
Current assets		$	5,628
Property and equipment			602
Identifiable intangible assets			13,790
Goodwill			20,936

Total assets acquired			40,956
Accounts payable and accrued expenses			(335	)
Deferred revenue			(620	)

		$	40,001


The goodwill and identifiable intangible assets related to the Symphony's acquisition are tax deductible. The Company estimated the fair value of intangible assets using the income, cost and market approaches to value the identifiable intangible assets, which are subject to amortization. The following table presents the Company's estimates of fair value of the intangible assets acquired (in thousands):

Description		Fair Value			Weighted Average
					Useful Life
					(in years)
Customer relationships		$	9,680			9.0
Technology			4,050			5.0
Tradename			60			3.0

Total identifiable intangible assets		$	13,790


oneTEM GmbH
On April 18, 2013 ("oneTEM Closing Date"), the Company entered into a Share Purchase Agreement (the "oneTEM Purchase Agreement"), with the holders of all of the issued share capital of oneTEM GmbH, a private limited company incorporated in Germany ("oneTEM"), under which the Company agreed to purchase all of the issued share capital of oneTEM (the "oneTEM Share Purchase"). On the oneTEM Closing Date, the oneTEM Share Purchase was effected in accordance with the terms of the oneTEM Purchase Agreement, with the Company acquiring all of the outstanding equity of oneTEM for aggregate consideration of (i) €0.9 million in cash paid at the closing and (ii) deferred consideration of €0.4 million in cash payable on the first anniversary of the closing. In addition, the Company is obligated to pay additional deferred cash consideration following the first four anniversaries of the oneTEM Closing Date, pursuant to an earn-out formula based upon the business, whose historic revenue had been one-time consulting revenue, beginning to generate annual recurring revenue from specified customers and then year-over-year increases in annual recurring revenue from those specified customers during the earn-out periods. The earn-out period begins with the first full month after the oneTEM Closing Date and continues for four consecutive 12-month periods. The Company valued this contingent consideration at €0.2 million. The purchase was subject to a net asset adjustment pursuant to which the purchase price would be increased or decreased to the extent the net asset position of oneTEM is more or less than a specified target. The deferred consideration is subject to set-off rights of the Company with respect to certain indemnities given by the former holders of the issued share capital of oneTEM under the oneTEM Purchase Agreement until the deferred consideration is paid in full. The Company included the operating results of oneTEM in its consolidated financial statements since the date of acquisition, including $0.6 million of strategic consulting, software licenses and other revenue.
oneTEM Purchase Price Allocation
The allocation of the total purchase price of oneTEM's net tangible and identifiable intangible assets was based upon management's preliminary estimate of the fair values of those assets taking into account all relevant information available. Actual amounts for each of the fair values of the assets acquired and liabilities assumed may vary. The Company allocated the excess of purchase price over the identifiable intangible and net tangible assets to goodwill. The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

Purchase consideration:
Cash		$	1,221
Deferred cash consideration			433
Fair value of contingent consideration			183

		$	1,837


Allocation of Purchase Consideration:
Current assets		$	565
Property and equipment			10
Identifiable intangible assets			870
Goodwill			655

Total assets acquired			2,100
Accounts payable and accrued expenses			(152	)
Taxes payable			(111	)

		$	1,837


The goodwill and identifiable intangible assets related to the oneTEM acquisition are not tax deductible. The Company estimated the fair value of intangible assets using the income, cost and market approaches to value the identifiable intangible assets, which are subject to amortization. The following table presents the Company's estimates of fair value of the identifiable intangible assets acquired (in thousands):

Description		Fair Value			Weighted Average
					Useful Life
					(in years)
Customer relationships		$	535			8.0
Covenants not to compete			298			2.0
Tradename			37			2.7

Total identifiable intangible assets		$	870

Unaudited_Pro_Forma_Results

Unaudited Pro Forma Results	12 Months Ended
Unaudited Pro Forma Results	Dec. 31, 2014
Unaudited Pro Forma Results
Unaudited Pro Forma Results
	5. Unaudited Pro Forma Results
	The following table presents the unaudited pro forma results of the Company for the years ended December 31, 2013 and 2014 as if the acquisition of oneTEM occurred at the beginning of 2013. These results are not intended to reflect the actual operations of the Company had the acquisition occurred at January 1, 2013.

		Years Ended
		December 31,
	(in thousands, except per share amounts)	2013		2014
	Revenue	$	189,165	$	212,476
	Operating income		5,011		5,204
	Net income		4,860		2,936
	Basic income per common share	$	0.13	$	0.08
	Diluted income per common share	$	0.12	$	0.07

Income_Loss_per_Share_Applicab

Income (Loss) per Share Applicable to Common Stockholders	12 Months Ended
Income (Loss) per Share Applicable to Common Stockholders	Dec. 31, 2014
Income per Share Applicable to Common Stockholders
Income (Loss) per Share Applicable to Common Stockholders
	6. Income per Share Applicable to Common Stockholders
	The following table sets forth the computations of income per share applicable to common stockholders for the years ended December 31, 2012, 2013 and 2014:

		For the Years Ended
		December 31,
	(in thousands, except per share amounts)	2012		2013		2014
	Basic and diluted net income per common share
	Net income	$	3,038	$	4,962	$	2,936


	Basic weighted-average common shares used to compute basic net income per share		36,492		37,706		38,642
	Outstanding stock options		3,230		2,623		2,328
	Outstanding restricted stock units		—		141		186
	Common stock warrants		15		2		1
	Anomalous unvested and unregistrer shares		133		—		—

	Diluted weighted-average common shares used to compute diluted net income per share		39,870		40,472		41,157


	Basic income per common share	$	0.08	$	0.13	$	0.08


	Diluted income per common share	$	0.08	$	0.12	$	0.07


	Diluted income per common share for the periods presented does not reflect the following potential common shares as the effect would be anti-dilutive either because the proceeds under the treasury stock method were in excess of the average fair market value for the period or because the Company had a net loss in the period.

	Outstanding stock options		3,624		3,547		3,276
	Outstanding restricted stock units		221		670		986
	Common stock warrants		10		9		9

Computers_Furniture_and_Equipm

Computers, Furniture and Equipment-Net	12 Months Ended
Computers, Furniture and Equipment-Net	Dec. 31, 2014
Computers, Furniture and Equipment-Net
Computers, Furniture and Equipment-Net
	7. Computers, Furniture and Equipment-Net
	Computers, furniture and equipment-net consists of:

		As of December 31,
	(in thousands)	2013			2014
	Computers and software	$	12,316		$	14,386
	Furniture and fixtures		1,194			1,345
	Leasehold improvements		1,380			1,595

			14,890			17,326
	Less: accumulated depreciation		(10,573	)		(12,109	)

	Computers, furniture and equipment-net	$	4,317		$	5,217


	Computers and software includes equipment under capital leases totaling approximately $2.5 million at December 31, 2013 and 2014. Accumulated depreciation on equipment under capital leases totaled approximately $2.4 million and $2.5 million as of December 31, 2013 and 2014, respectively. Depreciation and amortization expense associated with computers, furniture and equipment was $2.0 million, $2.3 million and $2.6 million for the years ended December 31, 2012, 2013 and 2014, respectively.

Restructuring_Charge

Restructuring Charge	12 Months Ended
Restructuring Charge	Dec. 31, 2013
Restructuring Charge
Restructuring Charge
	8. Restructuring Charge
	In September 2011, the Company recorded a restructuring charge as a result of the consolidation of office space in New Jersey. The consolidation of office space eliminated redundant office space acquired as part of the HCL-EMS acquisition in January 2011 and the Telwares acquisition in March 2011. The original charge reflected the fair value of the remaining rent payments for the office space the Company ceased using, net of estimated sublease income, plus real estate commissions and office relocation costs. During the year ended December 31, 2013, the Company recorded an adjustment of $0.1 million to the original restructuring charge as a result of the Company's inability to sublease the office space in the time period originally expected. Also, during the year ended December 31, 2013, the Company negotiated a lease termination agreement with the landlord of this New Jersey office space. The agreement terminated the remaining term of the lease effective June 30, 2013 for a termination fee of $0.9 million. The Company recorded an adjustment of $0.5 million to the restructuring charge as a result of the lease termination agreement. The liability related to the restructuring charge is included in other current liabilities on the Company's consolidated balance sheets. The following table summarizes the activity in the liabilities related to the restructuring charge for the years ended December 31, 2013 and 2014.

	(in thousands)	Lease costs, net			Other Costs			Total
		of estimated
		sublease income
	Remaining liability at December 31, 2012	$	613		$	(8	)	$	605
	Cash payments		(1,111	)		—			(1,111	)
	Non-cash charges and other		4			8			12
	Restructuring charge		654			—			654

	Remaining liability at December 31, 2013	$	160		$	—		$	160

	Cash payments		(160	)		—			(160	)

	Remaining liability at December 31, 2014	$	0		$	—		$	0

	less: current portion								0

	Long-term portion							$	—

Intangible_Assets_and_Goodwill

Intangible Assets and Goodwill	12 Months Ended
Intangible Assets and Goodwill	Dec. 31, 2014
Intangible Assets and Goodwill
Intangible Assets and Goodwill
	9. Intangible Assets and Goodwill
	The following table presents the components of the Company's intangible assets as of December 31, 2013 and 2014:

		December 31,
								Weighted
								Average Useful
	(in thousands)	2013			2014			Life (in years)
	Patents	$	1,054		$	1,054		8
	Less: accumulated amortization		(897	)		(1,029	)
	Patents, net		157			25

	Technological know-how		15,033			14,802		6.1
	Less: accumulated amortization		(7,853	)		(10,245	)
	Technological know-how, net		7,180			4,557

	Customer relationships		37,935			37,758		8.7
	Less: accumulated amortization		(15,155	)		(19,208	)
	Customer relationships, net		22,780			18,550

	Covenants not to compete		1,144			1,094		2
	Less: accumulated amortization		(935	)		(1,049	)
	Covenants not to compete, net		209			45

	Strategic marketing agreement		6,203			6,203		10
	Less: accumulated amortization		(597	)		(1,090	)
	Strategic marketing agreement, net		5,606			5,113

	Tradenames		885			857		3.8
	Less: accumulated amortization		(427	)		(641	)
	Tradenames, net		458			216

	Trademarks		247			247		Indefinite

	Intangible assets, net	$	36,637		$	28,753


	In June 2012, the Company converted certain channel customers to direct customers by purchase of the customer contracts from Insight Direct USA Inc., which continues as a referral partner rather than a channel partner, in exchange for consideration of $1.25 million, which has been paid. The Company has included the purchase of these customer contracts in customer relationships.
	The related amortization expense of intangible assets for 2012, 2013 and 2014 was $6.7 million, $8.1 million and $7.2 million, respectively. The Company's estimate of future amortization expense for acquired intangible assets that exist at December 31, 2014 is as follows:

	(in thousands)
	2015		5,971
	2016		5,565
	2017		4,978
	2018		4,578
	2019		3,585
	Thereafter		3,829

	Total	$	28,506


	The following table presents the changes in the carrying amounts of goodwill for the years ended December 31, 2013 and 2014.

	(in thousands)	Carrying
	(in thousands)	Amount
	Balance at December 31, 2012	$	65,825
	oneTEM		655
	Foreign exchange translation effect		(517	)

	Balance at December 31, 2013	$	65,963
	Foreign exchange translation effect		(615	)

	Balance at December 31, 2014	$	65,348

Debt

Debt	12 Months Ended
Debt	Dec. 31, 2014
Debt
Debt
	10. Debt
	As of December 31, 2013 and 2014, borrowings outstanding included the following:

		December 31,
	(in thousands)	2013			2014
	HCL-EMS contingent consideration. Payable as described below.	$	891		$	541
	Deferred oneTEM purchase price, net of unamortized discount of $87 and $37 at December 31, 2013 and 2014, respectively. Payable as described below.		684			235
	Capital lease and other obligations		459			790

	Total notes payable	$	2,034		$	1,566
	Less current portion	$	(1,831	)	$	(1,400	)

	Notes payable, less current portion	$	203		$	166


	Line of Credit
	The Company has a line of credit of up to $8.0 million based upon 80% of the Company's eligible accounts receivable with JP Morgan Chase Bank, N.A., which line of credit the Company has not utilized following its initial public offering in August 2011. The line of credit bears interest at the London Inter-Bank Offered Rate plus a 2.0% spread. The line of credit matures in September 2015. As of December 31, 2013 and 2014, there were no balances outstanding on the line of credit. The line of credit has a financial covenant relative to minimum cash balance requirements and is secured by all of the Company's tangible and intangible property.
	Contingent HCL-EMS Consideration
	As described in Note 4, the purchase consideration for the acquisition of HCL-EMS included deferred cash consideration. The deferred cash consideration included contingent cash payments following each of the first and second anniversaries of the HCL-EMS Closing Date, pursuant to an earn-out formula based upon specified revenues from specified customers acquired from HCL-EMS, subject to set-off rights of the Company with respect to indemnities given by HCL-EMS under the HCL-EMS APA. No interest accrued on the deferred cash consideration; however, the Company recorded imputed interest in the amount of $0.6 million based on the Company's weighted average cost of debt as of the date of the acquisition. The obligation to pay the deferred cash consideration is unsecured. In 2012, the Company and HCL-EMS agreed that the gross amount of the first year earn-out would be $1.9 million and the Company paid that amount to HCL-EMS. In April 2013, the Company and HCL-EMS agreed that the gross amount of the second year earn-out would be $1.9 million. In August 2013, the Company paid $1.0 million of the second year earn-out to HCL-EMS, and retained the balance of the second year earn-out in the amount of $0.9 million pending resolution of an outstanding indemnity matter. In September 2014, the Company paid $0.4 million in satisfaction of the third-party claim that triggered the indemnity matter and the contingent consideration balance was reduced by this amount.
	Deferred oneTEM Purchase Price
	As described in Note 4, the purchase consideration for the acquisition of oneTEM includes deferred cash consideration and contingent earn-out cash consideration. The deferred cash consideration consists of a payment of €0.4 million in cash payable on the first year anniversary of the closing of the oneTEM acquisition. The contingent earn-out cash consideration is payable pursuant to an earn-out formula based upon the business, whose historic revenue had been one-time consulting revenue, beginning to generate annual recurring revenue from specified customers and then year-over-year increases in annual recurring revenue from those specified customers during the earn-out periods. The earn-out period begins with the first full month after the oneTEM Closing Date and continues for four consecutive 12-month periods. The Company valued this contingent earn-out cash consideration at €0.2 million. No interest accrues on the deferred cash consideration or contingent earn-out consideration; however, the Company recorded imputed interest in the amount of €0.1 million based on weighted average cost of capital as of the date of the acquisition. The deferred consideration was and the contingent earn-out cash consideration is subject to set-off rights of the Company with respect to certain indemnities given by the former holders of the issued share capital of oneTEM under the oneTEM Purchase Agreement. In April, 2014, the Company paid the full €0.4 million of deferred consideration which was payable on the first anniversary of the oneTEM Closing Date. This payment did not include any amounts related to the earn-out and no amounts became payable under the earn-out terms for the 12-month period from May 2013 to April 2014.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 31, 2014
Stockholders' Equity
Stockholders' Equity
	11. Stockholders' Equity
	Common Stock—As of December 31, 2013 and 2014, the number of authorized shares of common stock, par value $0.0001 per share, was 150,000,000, of which 38,160,928 and 38,621,169 were issued and outstanding, respectively.
	During the year ended December 31, 2012, the Company issued 165,775 unregistered shares of its common stock and 132,617 unvested and unregistered shares of its common stock as part of the Anomalous purchase consideration, as described in Note 4. During the year ended December 31, 2013, the Company cancelled and retired the 132,617 unvested and unregistered shares of its common stock.
	During the year ended December 31, 2013, the Company issued 17,941 and 58,975 shares of its common stock to certain of its employees and members of its board of directors, respectively, under the Company's 2011 Stock Incentive Plan (the "2011 Plan"). During the year ended December 31, 2014, the Company issued 230,681 and 70,523 shares of its common stock to certain of its employees and members of its board of directors, respectively, under the provisions of the 2011 Plan. For the years ended December 31, 2013 and 2014, the Company recorded stock-based compensation expense of $0.8 million and $4.5 million, respectively, related to common stock issuances to certain of its employees and members of its board of directors.
	At the June 5, 2014 annual meeting of the Company's stockholders, an amendment to the Company's 2011 Stock Incentive Plan (the "2011 Plan") to reserve an additional 950,000 shares of common stock for issuance under the 2011 Plan was approved by a majority of the Company's stockholders. The Company's board of directors had previously approved such amendment.
	In November 2012, the Company's Board of Directors authorized a share repurchase program under which the Company may repurchase up to $20 million of its outstanding common stock on the open market or in privately negotiated transactions. During 2012, the Company repurchased 357,751 shares of common stock at an average price per share, including broker commissions, of $12.29, for an aggregate purchase price of $4.4 million. Of the 357,751 shares purchased in 2012, all were repurchased pursuant to trades entered into in 2012, with trades for 216,551 shares settling and such shares being retired in December 2012, and trades for the remaining 141,200 shares settling and such shares being retired in January 2013 as a result of the three trading day settlement convention. During the year ended December 31, 2013, the Company repurchased 519,760 shares of common stock at an average price per share, including broker commissions, of $13.26, for an aggregate purchase price of $6.9 million. In November 2014, the Company's board of directors authorized another share repurchase program under which the Company may repurchase up to $30 million of its outstanding common stock on the open market or in privately negotiated transactions. The $30 million includes $2.3 million of unused funds from the original $20 million share repurchase program announced in 2012. During the year ended December 31, 2014, the Company repurchased 579,251 shares of common stock at an average price per share, including broker commissions, of $13.66, for an aggregate purchase price of $7.9 million.
	Preferred Stock—As of December 31, 2013 and 2014, the number of authorized shares of preferred stock, par value $0.0001 per share, was 5,000,000, of which 0 were issued and outstanding.
	Common Stock Warrants—During the year ended December 31, 2013, warrant holders exercised warrants to purchase a total of 14,907 shares of common stock. The Company received proceeds of $34,747 related to these warrant exercises. During the year ended December 31, 2014, a warrant holder exercised a warrant to purchase a total of 710 shares of common stock. The Company received proceeds of $1,850 related to this warrant exercise.
	On March 22, 2011, the Company issued a warrant to purchase up to 1,282,789 shares of its common stock to Dell Products, L.P. ("Dell") in connection with the entry of the Company and Dell into a 49-month strategic relationship agreement. Under the terms of the warrant, the 1,282,789 shares of common stock may become exercisable upon the achievement of certain annual recurring revenue thresholds over the 49-month period. The warrant is exercisable at $5.987 per share. As of December 31, 2014, none of the shares that may become exercisable under this warrant were probable of being earned and becoming vested and accordingly no value was ascribed to this warrant. On a quarterly basis the Company reviews the actual annual recurring revenue related to the Dell strategic relationship agreement to determine if it is probable that Dell will reach any of the annual recurring revenue thresholds that would result in warrant shares being earned and becoming vested, and to the extent the Company deems it probable that any warrant shares will be earned and become vested, the Company will record the fair value of those shares to intangible assets and non-current liabilities using a Black-Scholes valuation model and mark to market each period thereafter until such time as the warrant shares are actually earned and vest.
	A summary of warrants to purchase common stock issued and exercised during the years ended December 31, 2012, 2013 and 2014 is presented below:

			Common
			Stock
			Warrants
	Outstanding at December 31, 2011			589,941
	Exercised			(449,877	)
	Issued			10,000
	Cancelled			(124,447	)

	Outstanding at December 31, 2012			25,617
	Exercised			(14,907	)

	Outstanding at December 31, 2013			10,710
	Exercised			(710	)

	Outstanding at December 31, 2014			10,000


	Weighted average exercise price		$	14.02


	Stock Options—As of December 31, 2013, the Company had five stock-based compensation plans, the Employee Stock Option/Stock Issuance Plan (the "Employee Plan"), the Executive Stock Option/Stock Issuance Plan (the "Executive Plan"), the 2005 Stock Incentive Plan (the "2005 Plan"), the Traq Amended and Restated 1999 Stock Plan (the "1999 Plan") and the 2011 Stock Incentive Plan (the "2011 Plan"). The 2011 Plan provides for the grant of incentive stock options, nonstatutory stock options, restricted stock awards and other stock-based awards.
	Under the provisions of the Employee Plan, the Executive Plan, the 2005 Plan, the 1999 Plan and the 2011 Plan (the "Plans"), the exercise price of each option is determined by the Company's board of directors or by a committee appointed by the board of directors. Under the 2011 Plan, the exercise price of all stock options must not be less than the fair market value of a share of common stock on the date of grant. The period over which options vest and become exercisable, as well as the term of the options, is determined by the board of directors or the committee appointed by the board of directors. The options generally vest over four years and expire 10 years after the date of the grant. During the year ended December 31, 2013, the Company's board of directors granted stock options to purchase an aggregate of 463,475 shares of common stock under the 2011 Plan to employees and non-employees, at a weighted average exercise price of $14.25 per share. During the year ended December 31, 2014, the Company's board of directors did not grant any stock options.
	For the years ended December 31, 2013 and 2014, the Company recorded stock-based compensation expense of $8.2 million and $6.6 million, respectively, related to stock options.
	As of December 31, 2014, there was $6.3 million of total unrecognized stock-based compensation cost, net of estimated forfeitures, related to stock options. This amount will be amortized on a straight-line basis over the requisite service period related to the stock option grants
	A summary of the status of stock options issued pursuant to the Plans during the years ended December 31, 2012, 2013 and 2014 is presented below:

	Options		Number of			Weighted			Weighted
			Shares			Average			Average
						Exercise Price			Contractual
									Life (years)
	Outstanding at December 31, 2011			6,670,335		$	3.6			7.3
	Granted			2,326,500		$	15.83
	Forfeited			(282,909	)	$	8.67
	Exercised			(1,859,557	)	$	2.19

	Outstanding at December 31, 2012			6,854,369		$	7.92			7.5
	Granted			463,475		$	14.25
	Forfeited			(135,626	)	$	13.15
	Exercised			(1,015,817	)	$	4.75

	Outstanding at December 31, 2013			6,166,401		$	8.81			6.9
	Granted			—		$	—
	Forfeited			(109,234	)	$	14.43
	Exercised			(453,275	)	$	4.62

	Outstanding at December 31, 2014			5,603,892		$	9.04			5.9
	Exercisable at end of the period			4,762,752			8.05			5.6
	Exercisable at end of the period			4,762,752		$	8.05			5.6


	Available for future grants at December 31, 2014			1,068,405


The intrinsic values of options outstanding, vested and exercised during the years ended December 31, 2012, 2013 and 2014 were as follows:

		2012						2013					2014
		Number of			Intrinsic			Number of			Intrinsic		Number of		Intrinsic
		Options			Value			Options			Value		Options		Value
Outstanding			6,854,369		$	35,977,101			6,166,401		$	57,358,729		5,603,892	$	28,536,126
Vested			3,226,280		$	27,902,361			4,086,272		$	46,133,626		4,762,752	$	28,205,096
Exercised			1,859,557		$	29,851,276			1,015,817		$	14,932,262		453,275	$	5,451,897
During the year ended December 31, 2013, employees of the Company exercised options to purchase a total of 1,015,817 shares of common stock at exercise prices ranging from $0.25 to $20.39 per share. Proceeds from the stock option exercises totaled $4.8 million.
During the year ended December 31, 2014, employees of the Company exercised options to purchase a total of 453,275 shares of common stock at exercise prices ranging from $0.25 to $17.74 per share. Proceeds from the stock option exercises totaled $2.1 million.
Restricted Stock Units—During the year ended December 31, 2014, the Company issued 879,122 restricted stock units to certain employees under the provisions of the 2011 Plan, of which 135,912 were performance-based restricted stock units, and 284,303 restricted stock units vested resulting in an equal number of shares of common stock being issued. These grants of restricted stock units had an aggregate fair value of $16.1 million. The value of a restricted stock unit award is determined based on the closing price of the Company's stock price at the date of grant. A restricted stock unit award entitles the holder to receive shares of the Company's common stock as the award vests. The restricted stock units vest over periods that range from one to three years. Stock-based compensation expense is amortized on a straight-line basis over the vesting period.
During the year ended December 31, 2013, the Company issued 684,084 restricted stock units to certain employees under the provisions of the 2011 Plan. These grants of restricted stock units had an aggregate fair value of $10.2 million. The value of a restricted stock unit award is determined based on the closing price of the Company's stock price at the date of grant. A restricted stock unit award entitles the holder to receive shares of the Company's common stock as the award vests. The restricted stock units vest over periods that range from one to three years. Stock-based compensation expense is amortized on a straight-line basis over the vesting period.
For the years ended December 31, 2013 and 2014, the Company recorded stock-based compensation expenses of $4.2 million and $7.4 million, respectively, related to restricted stock unit awards.
As of December 31, 2014, there was $14.0 million of total unrecognized stock-based compensation cost, net of estimated forfeitures, related to unvested restricted stock units. This amount will be amortized on a straight-line basis over the requisite service period related to the restricted unit grants.
A summary of the status of restricted stock units issued pursuant to the 2011 Plan during the years ended December 31, 2012, 2013 and 2014 is presented below:

Restricted Stock Units		Number of Shares			Weighted
					Average Fair
					Value
Outstanding at December 31, 2011			—		$	—
Granted			223,814		$	17.3
Forfeited			(2,500	)	$	20.35

Outstanding at December 31, 2012			221,314		$	17.27
Granted			684,084		$	14.89
Vested			(92,338	)	$	17.05
Forfeited			(4,267	)	$	15.7

Outstanding at December 31, 2013			808,793		$	15.29
Granted			879,122		$	18.36
Vested			(284,303	)	$	15.99
Forfeited			(231,107	)	$	15.26

Outstanding at December 31, 2014			1,172,505		$	17.36


In accordance with Accounting Standards Classification ("ASC") 718, Share Based Payment ("ASC 718"), total compensation expense for stock-based compensation awards was $9.2 million, $13.3 million and $18.5 million for the years ended December 31, 2012, 2013 and 2014, respectively, which is included on the accompanying consolidated statements of operations as follows (in thousands):

		For the Years Ended
		December 31,
		2012			2013			2014
Cost of goods sold		$	1,347		$	2,108		$	3,873
Sales and marketing expenses			2,133			3,941			5,065
General and administrative expenses			5,105			6,220			6,802
Research and development			580			990			2,758

Total stock-based employee compensation		$	9,165		$	13,259		$	18,498


Stock-based compensation expense for the equity awards outstanding as of December 31, 2014 will be recognized over the following periods as follows (in thousands):

Years Ending December 31,
2015		$	13,148
2016			6,610
2017			950

		$	20,708


Stock-based compensation costs are generally based on the fair value calculated from the Black-Scholes valuation model on the date of grant for stock options. The Black-Scholes valuation model requires the Company to estimate key assumptions such as expected volatility, expected terms, risk-free interest rates and dividend yields. The Company determined the assumptions in the Black-Scholes valuation model as follows: expected volatility is a combination of the Company's competitors' historical volatility; expected term is calculated using the "simplified" method prescribed in ASC 718; and the risk-free rate is based on the U.S. Treasury yield on 5- and 7-year instruments in effect at the time of grant. A dividend yield is not used, as the Company has never paid cash dividends and does not currently intend to pay cash dividends. The Company periodically reviews the assumptions and modifies the assumptions accordingly.
As part of the requirements of ASC 718, the Company is required to estimate potential forfeitures of stock grants and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock-based compensation expense to be recognized in future periods. The fair values of stock grants are amortized as compensation expense on a straight-line basis over the vesting period of the grants. Compensation expense recognized is shown in the operating activities section of the statement of cash flows.
The Company did not grant any stock options during 2014. The fair value of the stock options granted during 2012 and 2013 was determined at the date of grant using the Black-Scholes valuation model with the following assumptions:

		2012		2013
Expected dividend yield		0%		0%
Risk-free interest rate		0.79% to 1.16%		1.04% to 1.86%
Expected term (in years)		5.5 - 6.1 years		5.7 - 6.1 years
Expected volatility		58.09% - 59.92%		56.34% - 56.84%
Based on the above assumptions, the weighted-average fair value per share of stock options granted during the years ended December 31, 2012 and 2013 was approximately $8.50 and $7.55, respectively.

Income_Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2014
Income Taxes
Income Taxes
	12. Income Taxes
	The components of income before income taxes for the years ended December 31, 2012, 2013, and 2014 are as follows (in thousands):

			2012			2013			2014
	Domestic		$	3,959		$	8,237		$	2,212
	Foreign			(441	)		(2,264	)		3,038

	Income before income tax provision		$	3,518		$	5,973		$	5,250

	The provision for income tax expense for the years ended December 31, 2012, 2013 and 2014 consists of the following components (in thousands):

			2012			2013			2014
	Current tax provision:
	State		$	330		$	119		$	548
	Foreign			(33	)		492			777

	Total current expense			297			611			1,325

	Deferred tax provision:
	Federal		$	458		$	737		$	737
	State			40			273			126
	Foreign			(315	)		(610	)		126

	Total deferred expense			183			400			989

	Total income tax provision		$	480		$	1,011		$	2,314


	Income taxes related to the Company's income from operations differ from the amount computed using the federal statutory income tax rate as follows (in thousands):

			Years Ended December 31,
			2012			2013			2014
	Tax provision computed at the federal statutory rate		$	1,231		$	2,090		$	1,837
	Foreign tax rate differential			(127	)		(3	)		(580	)
	Tax (benefit)/provision related to exercised stock options/warrants			(9,996	)		(1,423	)		704
	Research and development tax credits			(205	)		51			(320	)
	Adjustment to prior year deferred and other			(1,439	)		227			282
	Change in valuation allowance			10,302			(1,008	)		(828	)
	Taxable goodwill			499			737			737
	State income taxes			215			340			482

	Provision for income taxes		$	480		$	1,011		$	2,314


	The provision for income taxes differs from the expected tax provision computed by applying the U.S. federal statutory rate to the income before income taxes because the Company has historically maintained a full valuation allowance on its deferred tax assets, as described more fully below, as well as differences in the tax-deductibility of certain items for income tax purposes as compared to the amounts that have been or will be expensed in the Company's consolidated statement of operations, including certain stock warrant and stock option exercises, foreign taxes and rate differentials, taxable goodwill and state income taxes.
	As of December 31, 2013 and 2014, the Company's deferred tax assets (liabilities) were as follows (in thousands):

			2013			2014
	Deferred tax assets:
	Net operating losses		$	19,675		$	15,882
	Unused research and development credits			3,450			3,414
	Deferred revenue			885			586
	Stock-based compensation			4,235			5,741
	Accrued expenses			570			827
	Deferred rent			149			70
	Fixed Assets			276			181
	Acquisition-related expenses			68			68
	Allowance for doubtful accounts			79			189
	Alternative Minimum Tax credit available			34			34
	Other			166			219
	Less: valuation allowance			(25,930	)		(25,647	)

			$	3,657		$	1,564
Deferred tax liabilities:
Intangible assets			(6,727	)		(5,434	)
Other			(22	)		(207	)

Net deferred tax liability		$	(3,092	)	$	(4,077	)


The Company recorded no federal income tax provision in 2013 and 2014 due to the utilization of net operating loss carryforwards in both years. State income taxes have resulted primarily from taxes on capital, taxes on gross receipts and minimum taxes imposed by the various states in which the Company operates.
Prior to 2013, there were no foreign income taxes due to taxable losses incurred by the foreign entities. During the years ended December 31, 2013 and 2014, the Company recognized a current foreign tax expense attributable to overall taxable income produced by several foreign entities.
The Company recorded a deferred income tax provision of $0.2 million, $0.4 million and $1.0 million in the years ended December 31, 2012, 2013 and 2014, respectively, related to the different book and tax treatment for goodwill and other intangible assets. For tax purposes, certain goodwill and intangible assets are subject to different amortization allowances than for book purposes. The deferred tax liability of approximately $3.1 million and $4.1 million at December 31, 2013 and 2014, respectively, is included in the Company's consolidated balance sheets within other long-term liabilities.
The Company has provided a valuation allowance for the full amount of its deferred tax assets at December 31, 2013 and 2014, as it is not more likely than not that any future benefit from deductible temporary differences and net operating loss and tax credit carryforwards will be realized. In reaching this determination, the Company weighed both positive and negative evidence with regards to its position. Positive evidence that may support the release of the valuation allowance, such as three consecutive years of book income, was determined to be outweighed by negative evidence in support of maintaining the allowance, including a three-year cumulative tax loss, net operating losses since inception, and an overall inconsistent income pattern. Although the weight of positive evidence related to cumulative income is increasing, the Company has determined it does not yet have sufficient positive evidence to support a reversal of the valuation allowance at this time. However, continued improvement in operating results along with continued expectations of sustainable profitability could lead to a reversal of a significant portion of the Company's valuation allowance. The decrease in the valuation allowance of $0.2 million for the year ended December 31, 2014, as compared to the year ended December 31, 2013, is primarily attributable to the utilization net operating loss carryforwards partially offset by increases related to stock-based compensation deferred tax assets.
As of December 31, 2014, the Company has federal net operating loss carryforwards of approximately $30.5 million, which, if unused, expire from 2022 to 2032. In addition to this amount, the Company has approximately $44.7 million of federal income tax loss carryforwards resulting from tax deductions related to stock options awarded to employees. Pursuant to ASC 718-740-25-10, the tax benefits of these deductions will be realized only at the point at which the deductions reduce income taxes payable. The Company also has federal research and development credit carryforwards of approximately $3.8 million at December 31, 2014, which are available to offset future federal tax liabilities.
Sections 382 and 383 of the Internal Revenue Code, and similar state regulations, contain provisions that may limit the net operating loss carryforwards available to be used to offset income in any given year upon the occurrence of certain events, including changes in the ownership interests of significant stockholders. In the event of a cumulative change in ownership in excess of 50% over a three-year period, the amount of the net operating loss carryforwards that the Company may utilize in any one year may be limited. The Company has completed several financings since its inception, which, when combined with the purchasing stockholders' subsequent disposition, have resulted in a change in control as defined by Section 382, or could result in a change in control in the future. In addition, the net operating loss carryforwards assumed from the acquisition of ProfitLine are subject to the provisions of Section 382. In aggregate, approximately $50.0 million of the Company's $75.2 million net operating loss carryforwards are available to offset future taxable income as of December 31, 2014, and the remaining $25.2 million will become available in prescribed increments in each future year through December 31, 2031.
The Company files income tax returns in the U.S. federal jurisdiction, various state jurisdictions and various foreign jurisdictions. The Company's income tax returns are open to examination by federal, state and foreign tax authorities, generally for the years ended December 31, 2011 and later, with certain state jurisdictions open for audit for earlier years. The Company has no amount recorded for any unrecognized tax benefits as of December 31, 2013 and 2014, nor did the Company record any amount for the implementation of ASC 740. The Company's policy is to record estimated interest and penalty related to the underpayment of income taxes or unrecognized tax benefits as a component of its income tax provision. During the years ended 2012, 2013 and 2014, the Company did not recognize any interest or penalties in its statements of operations and there are no accruals for interest or penalties at December 31, 2013 or 2014.
Pursuant to ASC 740-30-25, provision has not been made for U.S. or additional foreign taxes on undistributed earnings of foreign subsidiaries as the Company maintains that those earnings are deemed indefinitely reinvested. The Company plans to utilize undistributed earnings to finance expansion and operating requirements of subsidiaries outside of the United States. As of December 31, 2014, the Company has undistributed foreign earnings of approximately $5.5 million. Such earnings will be reinvested but could become subject to additional tax if they were remitted as dividends or were loaned to the Company or U.S. affiliates, or if the Company should sell or dispose of its stock in the foreign subsidiaries. It is not practical to determine the deferred tax liability, if any, that might be payable on foreign earnings because if the Company were to repatriate these earnings, the Company believes there would be various methods available to it, each with different U.S. tax consequences.

Fair_Value_Measurement

Fair Value Measurement	12 Months Ended
Fair Value Measurement	Dec. 31, 2014
Fair Value Measurement
Fair Value Measurement
	13. Fair Value Measurement
	The Company records certain financial assets and liabilities at fair value on a recurring basis. The Company determines fair values based on that price it would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date and in the principal or most advantageous market for that asset or liability.
	The prescribed fair value hierarchy and related valuation methodologies are as follows:
	Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.
	Level 2—Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, directly or indirectly, such as a quoted price for similar assets or liabilities in active markets.
	Level 3—Inputs are unobservable and are only used to measure fair value when observable inputs are not available. The inputs reflect the entity's own assumptions and are based on the best information available. This allows for the fair value of an asset or liability to be measured when no active market for that asset or liability exists.
	The following table discloses the assets and liabilities measured at fair value on a recurring basis as of December 31, 2013 and 2014 and the basis for that measurement:

		Fair Value Measurement
		at December 31, 2013
	(in thousands)	Total			Level 1		Level 2			Level 3
	Money market	$	18,345		$	18,345	$	—		$	—
	Contingent HCL-EMS acquisition consideration		891			—		—			891
	Contingent oneTEM acquisition consideration		206			—		—			206

		$	19,442		$	18,345	$	—		$	1,097




		Fair Value Measurement
		at December 31, 2014
	(in thousands)	Total			Level 1		Level 2			Level 3
	Money market	$	18,372		$	18,372	$	—		$	—
	Contingent HCL-EMS acquisition consideration		541			—		—			541
	Contingent oneTEM acquisition consideration		235			—		—			235

		$	19,148		$	18,372	$	—		$	776


	The changes in the fair value of the Level 3 liability are as follows:

		Contingent acquisition consideration
		Years Ended December 31,
		2013					2014
	(in thousands)	HCL-EMS			oneTEM		HCL-EMS			oneTEM
	Balance, Beginning of Period	$	2,046		$	—	$	891		$	206
	Initial earn-out consideration		—			181		—			—
	Cash payments		(1,000	)		—		(350	)		—
	Imputed interest		12			25		—			29
	Second year earn-out adjustment		(167	)		—		—			—

	Balance, End of Period	$	891		$	206	$	541		$	235


	The Company's investment in overnight money market institutional funds, which amounted to $18.3 million and $18.4 million at December 31, 2013 and 2014, respectively, is included in cash and cash equivalents on the accompanying consolidated balance sheets and is classified as a Level 1 input.
	The acquisition of HCL-EMS includes a contingent consideration agreement that requires additional consideration to be paid by the Company following each of the first and second anniversaries of the HCL-EMS Closing Date, pursuant to an earn-out formula ranging from 7.5% to 15% of specified revenues from specified customers acquired, subject to set-off rights of the Company with respect to indemnities given by HCL-EMS under the HCL-EMS APA. The fair value of the contingent consideration recognized was $3.4 million which was estimated by applying the income approach. The remaining balance of $0.5 million represents the balance retained by the Company pending resolution of an outstanding indemnity matter, after reduction for the $0.4 million payment mentioned below. The key assumptions include (a) a discount rate of 10.5% and (b) probability adjusted levels of revenue between approximately $12.6 million and $13.9 million. As of December 31, 2014, there were no changes in the recognized amounts from December 31, 2013, except for a $0.4 million payment to the third party in satisfaction of the claim that triggered the indemnity matter.
	The acquisition of oneTEM includes a contingent earn-out cash consideration agreement that requires additional consideration to be paid by the Company following each of the first four anniversaries of the oneTEM Closing Date. Historically, the oneTEM business had generated one-time consulting revenue. Under the earn-out formula, the earn-out consideration is equal to 9% of annual recurring revenue that the business begins to generate from specified customers in the first year and then 9% of year-over-year increases in annual recurring revenue growth from those specified customers during the earn-out periods. The earn-out period begins with the first full month after the oneTEM Closing Date and continues for four consecutive 12-month periods. The contingent earn-out cash consideration is subject to set-off rights of the Company with respect to indemnities given by the former holders of the issued share capital of oneTEM under the oneTEM Purchase Agreement. The fair value of the contingent earn-out cash consideration recognized was $0.2 million, which was estimated by applying the income approach. The key assumptions include (a) a discount rate of 15% and (b) probability adjusted levels of initial and then increased annual recurring revenue between approximately $0.2 million and $0.3 million. As of December 31, 2014, there were no changes in the recognized amounts from December 31, 2013, except for the accretion of imputed interest.
	The carrying amounts of the Company's other non-cash financial instruments including accounts receivable and accounts payable approximate their fair values due to the relatively short-term nature of these instruments.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	12 Months Ended
Supplemental Cash Flow Information	Dec. 31, 2014
Supplemental Cash Flow Information:
Supplemental Cash Flow Information:
	14. Supplemental Cash Flow Information
	Information about other cash flow activities during the years ended December 31, 2012, 2013 and 2014 are as follows:

	(in thousands)	2012		2013		2014
	SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
	Cash paid for:
	Interest	$	127	$	86	$	31
	Income tax payments	$	284	$	388	$	585
	NON-CASH TRANSACTIONS:
	NON-CASH TRANSACTIONS:
	Deferred purchase price in connection with Anomalous acquisition	$	950	$	—	$	—
	Deferred purchase price in connection with ttMobiles acquisition	$	2,315	$	—	$	—
	Deferred purchase price in connection with Symphony acquisition	$	10,942	$	—	$	—
	Deferred purchase price in connection with oneTEM acquisition	$	—	$	616	$	—
	Issuance of common stock in payment of board of directors fees	$	21	$	—	$	—
	Repurchase of common stock settled in January 2013	$	1,696	$	—	$	—

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2014
Commitments and Contingencies
Commitments and Contingencies
	15. Commitments and Contingencies
	During the normal course of business, the Company becomes involved in various routine legal proceedings including issues pertaining to patent and trademark infringement, customer disputes, employee matters and acquisition-related post-closing disputes. The Company does not believe that the outcome of these matters will have a material adverse effect on its financial condition.
	The Company has entered into non-cancellable operating leases for the rental of office space in various locations which expire between 2015 and 2023. Some of the leases provide for lower payments in the beginning of the term which gradually escalate during the term of the lease. The Company recognizes rent expense on a straight-line basis over the lease term, which gives rise to a deferred rent liability on the balance sheet. The Company also has entered into agreements with third-party hosting facilities, which expire between 2016 and 2017.
	The Company is also obligated under several leases covering computer equipment and software, which the Company has classified as financed lease obligations. In March 2014, the Company signed a new lease for additional gross rental office space in Bangalore, India. In May 2014, the Company signed a new lease for additional gross rental office space in Dresden, Germany. In July 2014, the Company signed a lease addendum for additional gross rental office space in Abingdon, UK. In August 2014, the Company signed a new lease for additional gross rental office space in Waltham, MA., replacing the lease that expired in December 2014. In December 2014, the Company signed a lease addendum for additional gross rental office space in China and signed a lease addendum to reduce its gross rental office space in Montreal, Canada. All future minimum rental payments for these addendums have been included in the schedule below. Additionally, the Company has entered into several operating leases for various office equipment items, which expire between March 2015 and September 2018.
	As of December 31, 2014, the Company's obligation for future minimum rental payments related to these leases is as follows:

	(in thousands)	Operating Leases		Financed Lease
	(in thousands)	Operating Leases		Obligations
	2015	$	6,441	$	814
	2016		4,831		—
	2017		2,810		—
	2018		1,709		—
	2019		1,138		—
	thereafter		360		—

	Total future minimum lease obligations	$	17,289	$	814


	Less: amount representing interest				(24	)

	Present value of minimum lease obligations			$	790


	Rent expense, included in general and administrative expense, was approximately $5.0 million, $5.6 million and $6.0 million for the years ended December 31, 2012, 2013 and 2014, respectively.

401k_Savings_Plans

401(k) Savings Plans	12 Months Ended
401(k) Savings Plans	Dec. 31, 2014
401(k) Savings Plans
401(k) Savings Plans
	16. 401(k) Savings Plans
	Effective January 2004, the Company adopted a defined contribution 401(k) savings plan (the "Plan") for substantially all of its employees. The Company's contributions to the Plan are discretionary. The Company matched a range of 5% to 10% of employees' contributions in 2012, 2013 and 2014. The cost of contributions made by the Company to the plan was $169,000, $195,000 and $263,000 for the years ended December 31, 2012, 2013 and 2014, respectively.

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts	12 Months Ended
Valuation and Qualifying Accounts	Dec. 31, 2014
Valuation and Qualifying Accounts
Valuation and Qualifying Accounts	17. Valuation and Qualifying Accounts

	(in thousands)	Balance at		Additions		Deductions,			Balance at
		Beginning of		Charged to		Write-offs and			End of Year
		Year		Costs and		Adjustments
				Expenses
	Allowance for doubtful accounts:
	Year ended December 31, 2012	$	102		96		—		$	198


	Year ended December 31, 2013	$	198		106		21		$	283


	Year ended December 31, 2014	$	283		261		(44	)	$	588

Summarized_Unaudited_Quarterly

Summarized Unaudited Quarterly Results	12 Months Ended
Summarized Unaudited Quarterly Results	Dec. 31, 2014
Summarized Unaudited Quarterly Results
Summarized Unaudited Quarterly Results
	18. Summarized Unaudited Quarterly Results
	The following table sets forth certain unaudited quarterly financial information for fiscal 2013 and 2014. This data should be read together with the Company's consolidated financial statements and the related notes included elsewhere in this Annual Report on Form 10-K. The Company has prepared the unaudited information on a basis consistent with its audited financial statements and has included all adjustments of a normal and recurring nature, which, in the opinion of management, are considered necessary to fairly present the Company's revenue and operating expenses for the quarters presented. The Company's historical operating results for any quarter are not necessarily indicative of results for any future period.

		For the three months ended
		March 31,		June 30,		September 30,		December 31,		March 31,			June 30,			September 30,		December 31,
		2013		2013		2013		2013		2014			2014			2014		2014
	Revenue	$	44,860	$	46,407	$	47,620	$	50,027	$	50,394		$	52,674		$	54,481	$	54,927
	Cost of revenue		20,816		20,836		21,346		21,980		23,732			24,207			25,454		24,071

	Gross profit		24,044		25,571		26,274		28,047		26,662			28,467			29,027		30,856
	Total operating expenses		23,108		24,725		24,950		26,040		26,469			28,292			27,526		27,521

	Income from operations		936		846		1,324		2,007		193			175			1,501		3,335
	Other income (expense), net		420		119		253		68		(15	)		(30	)		69		22

	Income before income taxes		1,356		965		1,577		2,075		178			145			1,570		3,357
	Income tax provision		231		415		22		343		445			548			635		686

	Net income (loss)	$	1,125	$	550	$	1,555	$	1,732	$	(267	)	$	(403	)	$	935	$	2,671


	Income (loss) per common share
	Basic	$	0.03	$	0.01	$	0.04	$	0.05	$	(0.01	)	$	(0.01	)	$	0.02	$	0.07
	Diluted	$	0.03	$	0.01	$	0.04	$	0.04	$	(0.01	)	$	(0.01	)	$	0.02	$	0.07
	The sum of the quarterly income per common share amounts does not tie to the full year income per common share amount due to rounding.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Summary of Significant Accounting Policies
Consolidation and Basis of Preparation	Consolidation and Basis of Preparation—The consolidated financial statements include the financial results of Tangoe, Inc. and its wholly owned subsidiaries Tangoe EU B.V., Tangoe (China) Co., Ltd., Tangoe-PL, Inc., Tangoe Canada, Inc., Tangoe Europe, Limited, Tangoe Deutschland GmbH (formerly oneTEM GmbH) acquired by the Company on April 18, 2013, Tangoe India Softek Services Private, Limited formed by the Company in August 2012, described further in Note 4, Tangoe PTY Ltd. (Australia), Tangoe do Brasil Servicos Tecnologicos LTDA (Brazil) and Tangoe (Singapore) Co., Pte. Ltd. formed on January 14, 2014. Intercompany balances and transactions have been eliminated in consolidation.

Cash and Cash Equivalents	Cash and Cash Equivalents—The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. Cash equivalents consist primarily of a variable interest rate account. As of December 31, 2014, the Company had no restrictions on its $51.3 million of cash and cash equivalents.

Revenue Recognition	Revenue Recognition—Recurring technology and services revenue consists of subscription-based fees, software subscription license fees, software maintenance fees and hosting fees related to the use of the Company's solution to manage its customers' communications expenses. Strategic consulting, software licenses and other revenues consist of fees for contract negotiations, bill audits, sale of mobile telecommunication accessories, professional services and perpetual software licenses. The Company recognizes revenue when persuasive evidence of an arrangement exists, pricing is fixed or determinable, collection is reasonably assured and delivery or performance of service has occurred.
	Recurring technology and services subscription-based fees, software subscription license fees, software maintenance fees and hosting fees are recognized ratably over the term of the period of service. The subscription-based services the Company provides include help desk, asset procurement and provisioning and carrier dispute resolution. The Company follows the provisions of Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 605-10-S99, Revenue Recognition, and ASC 605-25, Revenue Recognition with Multiple-Element Arrangements. When contracts contain multiple elements, the Company evaluates each element in the contract to determine whether it represents a separate unit of accounting. In order to account for deliverables in a multiple-deliverable arrangement as separate units of accounting, the deliverables must have stand-alone value upon delivery. When multiple deliverables included in an arrangement are separable into different units of accounting, the arrangement consideration is allocated to the identified separate units of accounting based on their relative selling price. Multiple-deliverable arrangements accounting guidance provides a hierarchy to use when determining the relative selling price for each unit of accounting. Vendor-specific objective evidence ("VSOE") of selling price, based on the price at which the item is regularly sold by the vendor on a stand-alone basis, is used if it exists. If VSOE of selling price is not available, third-party evidence ("TPE") of selling price is used to establish the selling price if it exists. If VSOE of selling price and TPE of selling price are not available, the best estimate of selling price ("BESP") is used. The Company determines the BESP for a product or service by considering multiple factors including, but not limited to, integration of project offerings, volume and location of telecommunication spend to be managed and discounting practices.
	The Company has determined that implementation fees associated with recurring technology and services engagements do not have stand-alone value and therefore do not represent a separate unit of accounting. As such, they are recognized over the estimated expected life of the customer relationship which the Company estimates to be equal to twice the contract life calculated on a per-customer basis and the Company recognizes implementation fees ratably over this period.
	Software license fees consist of fees paid for a perpetual license agreement for the Company's technology, which are recognized in accordance with ASC 985-605, Software Revenue Recognition. VSOE for maintenance and support is established by a stated renewal rate included in the license arrangement or rates charged in stand-alone sales of maintenance and support. If software maintenance fees are provided for in the license fee or at a discount pursuant to a license agreement, a portion of the license fee equal to the fair market value of these amounts is allocated to software maintenance revenue based on the value established by independent sales of such maintenance services to customers.
	Professional services related to the implementation of the Company's software products ("Consulting Services") are generally performed on a fixed fee basis under separate service arrangements. Consulting Services revenue is recognized as the services are performed by measuring progress towards completion based upon either costs or the achievement of certain milestones. The Company also provides contract negotiation and bill audit services ("Strategic Sourcing Services") on behalf of its customers, which are generally performed on a contingency fee basis, with the Company's fees being based on a percentage of the savings the Company achieves for the customer. Revenue from Strategic Sourcing Services engagements is recognized as savings are secured for the customer or as work is completed. The revenue is generally billed as a base fee and a contingency fee based upon the amount of savings secured multiplied by the contingency fee percentage to which the Company is entitled.
	In accordance with ASC 985-605, Income Statement Characterization of Reimbursements Received for Out-of-Pocket Expenses, the Company classifies reimbursed expenses as revenue and the related expense within cost of revenue in the accompanying consolidated statements of operations. For the years ended December 31, 2012, 2013 and 2014, reimbursed expenses of $0.2 million, $0.1 million and $0.1 million, respectively, were included in revenue.

Software Development Costs	Software Development Costs—The Company expenses research and development costs as incurred. The Company has evaluated the establishment of technological feasibility of its products in accordance with ASC 350, Accounting for the Costs of Computer Software to be Sold, Leased or Otherwise Marketed. The Company has concluded that technological feasibility is not established until the development stage of the product is nearly complete. The time period during which costs could be capitalized from the point of reaching technological feasibility until the time of general release is very short and, consequently, the amounts that could be capitalized are not material to the Company's financial position or results of operations. Therefore, the Company charges all such costs to research and development in the period incurred.

Computers, Furniture and Equipment	Computers, Furniture and Equipment—Computers, furniture and equipment are stated at historical cost. Depreciation of computers, furniture and equipment is provided for, commencing when the assets are placed in service, using the straight-line method over the estimated useful lives of the assets, which range from three to seven years. Leasehold improvements are amortized over the lease term, which is shorter than the useful lives.

Deferred Rent	Deferred Rent—The Company has operating leases for various office spaces, some of which include a rent escalation clause. GAAP requires that rental expense be reflected on a straight-line basis over the life of the lease. This results in deferred rent on the consolidated balance sheet.

Income Taxes	Income Taxes—The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company's financial statements or tax returns. Deferred tax assets and liabilities are measured based on the difference between the financial statement carrying amounts and the respective tax basis of assets and liabilities and net operating loss carryforwards available for tax reporting purposes using the applicable tax rates for the years in which the differences are expected to reverse. A valuation allowance is recorded on deferred tax assets unless realization is determined to be more likely than not.

Concentration of Credit Risk	Concentration of Credit Risk—Financial instruments that subject the Company to risk of loss consist principally of accounts receivable. For the years ended December 31, 2012, 2013 and 2014, no strategic alliance partner or individual end customer represented greater than 10% of total revenue. As of December 31, 2013 and 2014, no strategic alliance partner or individual end customer represented a greater than 10% concentration of total accounts receivable. The Company has balances with financial institutions in excess of the Federal Deposit Insurance Corporation limit. The Company believes that credit risks associated with these concentrations are limited, as the amounts are held by major financial institutions in the United States.

Accounts Receivable and Allowance for Doubtful Accounts	Accounts Receivable and Allowance for Doubtful Accounts—Accounts receivable represent trade receivables from customers when the Company has invoiced for software solutions and/or services and the Company has not yet received payment. The Company presents accounts receivable net of an allowance for doubtful accounts for estimated losses resulting from the inability of customers to make required payments. The allowance for possible losses is estimated based upon a review of outstanding receivables, historical collection information and existing economic conditions. Accounts receivable are charged against the allowance (written-off) when substantially all collection efforts cease. Any change in the assumptions used in analyzing a specific account receivable might result in an additional allowance for doubtful accounts being recognized in the period in which the change occurs. Based on the information available, the Company's management believes that the allowance for doubtful accounts as of December 31, 2013 and 2014 is adequate. For certain transactions, the Company has met the requirements to recognize revenue in advance of physically invoicing the customer. In these instances, the Company records unbilled receivables for the amount that will be due from the customer upon invoicing. As of December 31, 2013 and 2014, unbilled receivables included on the accompanying consolidated balance sheets were $4.6 million and $11.2 million, respectively.

Cash Held on Behalf of Customers	Cash Held on Behalf of Customers—The Company's services for some customers include the payment of the customer's communications invoices directly to the carrier. Such payments are made from separate bank accounts set up on behalf of each such customer, which are funded by the customer shortly in advance of the Company making any disbursements. These accounts are used only for the payment of the customer's invoices and the Company does not fund these accounts, therefore the balances in these accounts are not included on the accompanying consolidated balance sheets. As of December 31, 2013 and 2014, the total funds held by the Company on behalf of its customers were $11.1 million and $15.5 million, respectively.

Use of Estimates	Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reported period. Actual results could differ from those estimates.

Income Per Share	Income Per Share—Income per common share is calculated in accordance with the provisions of ASC 260, Earnings per Share. Under ASC 260, public companies are required to report both basic and diluted income per common share. Basic and diluted income per share is computed by dividing net income for the period by the weighted average number of shares of common stock outstanding during the period. The calculation of diluted income per share gives effect to potential common shares; however, potential common shares are excluded if their effect is antidilutive. Potential common shares are composed of shares of common stock issuable upon the exercise of outstanding stock options and warrants and on the vesting of restricted stock units.

Business Combinations and Valuation of Intangible Assets	Business Combinations and Valuation of Intangible Assets—The Company accounts for business combinations in accordance with ASC 805, Business Combinations. ASC 805 requires business combinations to be accounted for using the purchase method of accounting and includes specific criteria for recording intangible assets separate from goodwill and promotes greater use of fair values in financial reporting. Results of operations of acquired businesses are included in the financial statements of the acquiring company from the date of acquisition. Net assets of the acquired company are recorded at their fair value at the date of acquisition.

Impairment of Goodwill and Certain Other Long-Lived Assets	Impairment of Goodwill and Certain Other Long-Lived Assets—As required by ASC 350, Goodwill and Other Intangible Assets, the Company accounts for goodwill acquired in acquisition of a business based upon the excess fair value of consideration transferred over the fair value of net assets acquired in the business combination. Goodwill is tested for impairment on an annual basis as of December 31, and, when specific circumstances dictate, between annual tests. The Company has one reporting unit. When impaired, the carrying value of goodwill is written down to fair value. The goodwill impairment test involves evaluating qualitative information to determine if it is more than 50% likely that the fair value of a reporting unit is less than its carrying value in determining if the traditional two-step goodwill impairment test described below must be applied. The first step, identifying a potential impairment, compares the fair value of a reporting unit with its carrying amount, including goodwill. If the carrying value of the reporting unit exceeds its fair value, the second step would need to be conducted; otherwise, no further steps are necessary as no potential impairment exists. The second step, measuring the impairment loss, compares the implied fair value of the reporting unit goodwill with the carrying amount of that goodwill. Any excess of the reporting unit goodwill carrying value over the respective implied fair value is recognized as an impairment loss. There was no impairment of goodwill for the years ended December 31, 2013 and 2014.
	The Company accounts for the impairment of long-lived assets other than goodwill in accordance with ASC 360, Accounting for the Impairment or Disposal of Long-Lived Asset. In accordance with ASC 360, the Company accounts for long lived assets, including purchased-intangible assets, based upon the fair value of assets received. Purchased-intangible assets are amortized on a straight line, ranging from two to ten years. The Company performs a review of purchased-intangible assets whenever events or changes in circumstances indicate that the useful life is shorter than the Company originally estimated or that the carrying amount of assets may not be recoverable. If such facts and circumstances exist, the Company assesses the recoverability of purchased-intangible assets by comparing the future undiscounted cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Impairments, if any, are based on the excess of the carrying amount over the fair value of those assets. If the useful life of the asset is shorter than originally estimated, the Company accelerates the rate of amortization and amortizes the remaining carrying value over the new shorter useful life. There was no impairment of purchased-intangible assets identified for the years ended December 31, 2013 and 2014.

Stock-Based Compensation	Stock-Based Compensation—The Company follows ASC 718, Share-based Payment, for recording stock-based compensation. This statement requires recording stock-based awards at fair value. The Company also complies with the provisions of ASC 505, Accounting for Equity Instruments That Are Issued to Other Than Employees for Acquiring, or in Conjunction with Selling, Goods or Services, with respect to stock option grants to non-employees.

Foreign Currency Translation	Foreign Currency Translation—In 2014, the Company had wholly owned international subsidiaries in the Netherlands, China, Canada, the United Kingdom, India, Germany, Australia, Brazil and Singapore. For 2013 and 2014, the international operations were immaterial to the overall consolidated financial statements of the Company. Gains and losses on foreign currency translation of the financial statements of foreign operations whose functional currency is other than the U.S. dollar are included in accumulated other comprehensive income. Assets and liabilities of foreign operations are translated at year-end exchange rates and revenue and expense are translated at average rates in effect during the year. Foreign currency exchange gains and losses from transactions and balances denominated in a currency other than the functional currency are recorded in general and administrative expenses on the consolidated statement of operations.

Comprehensive (Loss) Income	Comprehensive Income—Comprehensive income consists of net income and other comprehensive items. Other comprehensive items include foreign currency translation adjustments.

Business_Combinations_Tables

Business Combinations (Tables)	12 Months Ended
Business Combinations (Tables)	Dec. 31, 2014
HCL-EMS
Business combinations
Schedule of breakdown between purchase price and the allocation of the total purchase price	The following table presents the breakdown between cash and contingent consideration and the allocation of the total purchase price (in thousands):

	Cash	$	3,000
	Fair value of contingent consideration		3,390

		$	6,390


	Allocation of Purchase Consideration:
	Accounts receivable	$	2,269
	Prepaid and other current assets		125
	Property and equipment		273
	Intangible assets		2,700
	Goodwill		2,243
	Deposits and non-current assets		170
	Accounts payable		(229	)
	Accrued expenses		(1,042	)
	Deferred revenue		(119	)

		$	6,390




Schedule of estimates of fair value of the identifiable intangible assets acquired

	Description	Fair Value			Weighted
		(in thousands)			Average
					Useful Life
					(in years)
	Technology	$	840			4.0
	Customer relationships		1,860			9.0

	Total intangible assets	$	2,700




Anomalous Networks Inc [Member]
Business combinations
Schedule of breakdown between purchase price and the allocation of the total purchase price	The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

	Purchase consideration:
	Cash	$	3,521
	Common stock		1,984
	Deferred cash consideration		1,495

		$	7,000


	Allocation of Purchase Consideration:
	Current assets	$	1,140
	Property and equipment		47
	Other assets		10
	Identifiable intangible assets		2,857
	Goodwill		4,477

	Total assets acquired		8,531
	Accounts payable and accrued expenses		(394	)
	Deferred taxes		(767	)
	Deferred revenue		(370	)

		$	7,000




Schedule of estimates of fair value of the identifiable intangible assets acquired

	Description	Fair Value			Weighted
		(in thousands)			Average
					Useful Life
					(in years)
	Technology	$	2,017			5.0
	Non-compete covenants		553			2.0
	Customer relationships		236			4.0
	Tradenames		51			3.0

	Total identifiable intangible assets	$	2,857




ttMobiles
Business combinations
Schedule of breakdown between purchase price and the allocation of the total purchase price	The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

	Purchase consideration:
	Cash	$	6,359
	Deferred cash consideration		2,315

		$	8,674


	Allocation of Purchase Consideration:
	Current assets	$	2,469
	Property and equipment		188
	Identifiable intangible assets		4,288
	Goodwill		3,557

	Total assets acquired		10,502
	Accounts payable and accrued expenses		(848	)
	Deferred taxes		(954	)
	Deferred revenue		(26	)

		$	8,674




Schedule of estimates of fair value of the identifiable intangible assets acquired

	Description	Fair Value			Weighted
		(in thousands)			Average
					Useful Life
					(in years)
	Customer relationships	$	2,606			9.0
	Technology		1,178			5.0
	Tradenames		388			4.0
	Non-compete covenants		116			2.0

	Total identifiable intangible assets	$	4,288




Symphony
Business combinations
Schedule of breakdown between purchase price and the allocation of the total purchase price	The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

	Purchase consideration:
	Cash	$	29,208
	Deferred cash consideration		10,793

		$	40,001


	Allocation of Purchase Consideration:
	Current assets	$	5,628
	Property and equipment		602
	Identifiable intangible assets		13,790
	Goodwill		20,936

	Total assets acquired		40,956
	Accounts payable and accrued expenses		(335	)
	Deferred revenue		(620	)

		$	40,001




Schedule of estimates of fair value of the identifiable intangible assets acquired	The following table presents the Company's estimates of fair value of the intangible assets acquired (in thousands):

	Description	Fair Value			Weighted Average
					Useful Life
					(in years)
	Customer relationships	$	9,680			9.0
	Technology		4,050			5.0
	Tradename		60			3.0

	Total identifiable intangible assets	$	13,790




oneTEM
Business combinations
Schedule of breakdown between purchase price and the allocation of the total purchase price	The following table presents the breakdown between cash and deferred purchase price and the allocation of the total purchase price (in thousands):

	Purchase consideration:
	Cash	$	1,221
	Deferred cash consideration		433
	Fair value of contingent consideration		183

		$	1,837


	Allocation of Purchase Consideration:
	Current assets	$	565
	Property and equipment		10
	Identifiable intangible assets		870
	Goodwill		655

	Total assets acquired		2,100
	Accounts payable and accrued expenses		(152	)
	Taxes payable		(111	)

		$	1,837




Schedule of estimates of fair value of the identifiable intangible assets acquired	The following table presents the Company's estimates of fair value of the identifiable intangible assets acquired (in thousands):

	Description	Fair Value			Weighted Average
					Useful Life
					(in years)
	Customer relationships	$	535			8.0
	Covenants not to compete		298			2.0
	Tradename		37			2.7

	Total identifiable intangible assets	$	870

Unaudited_Pro_Forma_Results_Ta

Unaudited Pro Forma Results (Tables)	12 Months Ended
Unaudited Pro Forma Results (Tables)	Dec. 31, 2014
Unaudited Pro Forma Results
Schedule of unaudited pro forma results, as if the acquisition occurred at beginning of the period

		Years Ended
		December 31,
	(in thousands, except per share amounts)	2013		2014
	Revenue	$	189,165	$	212,476
	Operating income		5,011		5,204
	Net income		4,860		2,936
	Basic income per common share	$	0.13	$	0.08
	Diluted income per common share	$	0.12	$	0.07

Income_Loss_per_Share_Applicab1

Income (Loss) per Share Applicable to Common Stockholders (Tables)	12 Months Ended
	Dec. 31, 2014
Income per Share Applicable to Common Stockholders
Schedule of computations of income per share applicable to common stockholders

		For the Years Ended
		December 31,
	(in thousands, except per share amounts)	2012		2013		2014
	Basic and diluted net income per common share
	Net income	$	3,038	$	4,962	$	2,936


	Basic weighted-average common shares used to compute basic net income per share		36,492		37,706		38,642
	Outstanding stock options		3,230		2,623		2,328
	Outstanding restricted stock units		—		141		186
	Common stock warrants		15		2		1
	Anomalous unvested and unregistrer shares		133		—		—

	Diluted weighted-average common shares used to compute diluted net income per share		39,870		40,472		41,157


	Basic income per common share	$	0.08	$	0.13	$	0.08


	Diluted income per common share	$	0.08	$	0.12	$	0.07




Schedule of potential common shares excluded from computation of diluted income per common share as the effect would be anti-dilutive

	Outstanding stock options		3,624		3,547		3,276
	Outstanding restricted stock units		221		670		986
	Common stock warrants		10		9		9

Computers_Furniture_and_Equipm1

Computers, Furniture and Equipment-Net (Tables)	12 Months Ended
Computers, Furniture and Equipment-Net (Tables)	Dec. 31, 2014
Computers, Furniture and Equipment-Net
Schedule of computers, furniture and equipment-net

		As of December 31,
	(in thousands)	2013			2014
	Computers and software	$	12,316		$	14,386
	Furniture and fixtures		1,194			1,345
	Leasehold improvements		1,380			1,595

			14,890			17,326
	Less: accumulated depreciation		(10,573	)		(12,109	)

	Computers, furniture and equipment-net	$	4,317		$	5,217

Restructuring_Charge_Tables

Restructuring Charge (Tables)	12 Months Ended
Restructuring Charge (Tables)	Dec. 31, 2014
Restructuring Charge
Summary of the activity in the liabilities related to the restructuring charge	The following table summarizes the activity in the liabilities related to the restructuring charge for the years ended December 31, 2013 and 2014.

	(in thousands)	Lease costs, net			Other Costs			Total
		of estimated
		sublease income
	Remaining liability at December 31, 2012	$	613		$	(8	)	$	605
	Cash payments		(1,111	)		—			(1,111	)
	Non-cash charges and other		4			8			12
	Restructuring charge		654			—			654

	Remaining liability at December 31, 2013	$	160		$	—		$	160

	Cash payments		(160	)		—			(160	)

	Remaining liability at December 31, 2014	$	0		$	—		$	0

	less: current portion								0

	Long-term portion							$	—

Intangible_Assets_and_Goodwill1

Intangible Assets and Goodwill (Tables)	12 Months Ended
Intangible Assets and Goodwill (Tables)	Dec. 31, 2014
Intangible Assets and Goodwill
Schedule of components of intangible assets

		December 31,
								Weighted
								Average Useful
	(in thousands)	2013			2014			Life (in years)
	Patents	$	1,054		$	1,054		8
	Less: accumulated amortization		(897	)		(1,029	)
	Patents, net		157			25

	Technological know-how		15,033			14,802		6.1
	Less: accumulated amortization		(7,853	)		(10,245	)
	Technological know-how, net		7,180			4,557

	Customer relationships		37,935			37,758		8.7
	Less: accumulated amortization		(15,155	)		(19,208	)
	Customer relationships, net		22,780			18,550

	Covenants not to compete		1,144			1,094		2
	Less: accumulated amortization		(935	)		(1,049	)
	Covenants not to compete, net		209			45

	Strategic marketing agreement		6,203			6,203		10
	Less: accumulated amortization		(597	)		(1,090	)
	Strategic marketing agreement, net		5,606			5,113

	Tradenames		885			857		3.8
	Less: accumulated amortization		(427	)		(641	)
	Tradenames, net		458			216

	Trademarks		247			247		Indefinite

	Intangible assets, net	$	36,637		$	28,753




Schedule of estimate of future amortization expense for acquired intangible assets	The Company's estimate of future amortization expense for acquired intangible assets that exist at December 31, 2014 is as follows:

	(in thousands)
	2015		5,971
	2016		5,565
	2017		4,978
	2018		4,578
	2019		3,585
	Thereafter		3,829

	Total	$	28,506




Schedule of changes in carrying amounts of goodwill	The following table presents the changes in the carrying amounts of goodwill for the years ended December 31, 2013 and 2014.

	(in thousands)	Carrying
	(in thousands)	Amount
	Balance at December 31, 2012	$	65,825
	oneTEM		655
	Foreign exchange translation effect		(517	)

	Balance at December 31, 2013	$	65,963
	Foreign exchange translation effect		(615	)

	Balance at December 31, 2014	$	65,348

Debt_Tables

Debt (Tables)	12 Months Ended
Debt (Tables)	Dec. 31, 2014
Debt
Schedule of debt outstanding

		December 31,
	(in thousands)	2013			2014
	HCL-EMS contingent consideration. Payable as described below.	$	891		$	541
	Deferred oneTEM purchase price, net of unamortized discount of $87 and $37 at December 31, 2013 and 2014, respectively. Payable as described below.		684			235
	Capital lease and other obligations		459			790

	Total notes payable	$	2,034		$	1,566
	Less current portion	$	(1,831	)	$	(1,400	)

	Notes payable, less current portion	$	203		$	166

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
Stockholders' Equity (Tables)	Dec. 31, 2014
Stockholders' Equity
Summary of activity with respect to warrants to purchase common stock

		Common
		Stock
		Warrants
	Outstanding at December 31, 2011		589,941
	Exercised		(449,877	)
	Issued		10,000
	Cancelled		(124,447	)

	Outstanding at December 31, 2012		25,617
	Exercised		(14,907	)

	Outstanding at December 31, 2013		10,710
	Exercised		(710	)

	Outstanding at December 31, 2014		10,000


	Weighted average exercise price	$	14.02




Summary of status of stock options issued pursuant to the plans

	Options	Number of			Weighted		Weighted
		Shares			Average		Average
					Exercise Price		Contractual
							Life (years)
	Outstanding at December 31, 2011		6,670,335		$	3.6		7.3
	Granted		2,326,500		$	15.83
	Forfeited		(282,909	)	$	8.67
	Exercised		(1,859,557	)	$	2.19

	Outstanding at December 31, 2012		6,854,369		$	7.92		7.5
	Granted		463,475		$	14.25
	Forfeited		(135,626	)	$	13.15
	Exercised		(1,015,817	)	$	4.75

	Outstanding at December 31, 2013		6,166,401		$	8.81		6.9
	Granted		—		$	—
	Forfeited		(109,234	)	$	14.43
	Exercised		(453,275	)	$	4.62

	Outstanding at December 31, 2014		5,603,892		$	9.04		5.9
	Exercisable at end of the period		4,762,752			8.05		5.6
	Exercisable at end of the period		4,762,752		$	8.05		5.6


	Available for future grants at December 31, 2014		1,068,405




Summary of intrinsic values of options outstanding, vested and exercised

		2012					2013				2014
		Number of			Intrinsic		Number of		Intrinsic		Number of		Intrinsic
		Options			Value		Options		Value		Options		Value
	Outstanding		6,854,369		$	35,977,101		6,166,401	$	57,358,729		5,603,892	$	28,536,126
	Vested		3,226,280		$	27,902,361		4,086,272	$	46,133,626		4,762,752	$	28,205,096
	Exercised		1,859,557		$	29,851,276		1,015,817	$	14,932,262		453,275	$	5,451,897


Summary of status of restricted stock units issued pursuant to the plans

	Restricted Stock Units	Number of Shares			Weighted
					Average Fair
					Value
	Outstanding at December 31, 2011		—		$	—
	Granted		223,814		$	17.3
	Forfeited		(2,500	)	$	20.35

	Outstanding at December 31, 2012		221,314		$	17.27
	Granted		684,084		$	14.89
	Vested		(92,338	)	$	17.05
	Forfeited		(4,267	)	$	15.7

	Outstanding at December 31, 2013		808,793		$	15.29
	Granted		879,122		$	18.36
	Vested		(284,303	)	$	15.99
	Forfeited		(231,107	)	$	15.26

	Outstanding at December 31, 2014		1,172,505		$	17.36




Schedule of total compensation expense for stock-based compensation awards included in the accompanying condensed consolidated statements of operations	In accordance with Accounting Standards Classification ("ASC") 718, Share Based Payment ("ASC 718"), total compensation expense for stock-based compensation awards was $9.2 million, $13.3 million and $18.5 million for the years ended December 31, 2012, 2013 and 2014, respectively, which is included on the accompanying consolidated statements of operations as follows (in thousands):

		For the Years Ended
		December 31,
		2012			2013		2014
	Cost of goods sold	$	1,347		$	2,108	$	3,873
	Sales and marketing expenses		2,133			3,941		5,065
	General and administrative expenses		5,105			6,220		6,802
	Research and development		580			990		2,758

	Total stock-based employee compensation	$	9,165		$	13,259	$	18,498




Schedule of stock-based compensation expense for equity awards outstanding	Stock-based compensation expense for the equity awards outstanding as of December 31, 2014 will be recognized over the following periods as follows (in thousands):

	Years Ending December 31,
	2015	$	13,148
	2016		6,610
	2017		950

		$	20,708




Schedule of valuation assumptions used to determine value of options granted during the year using Black-Scholes valuation model

		2012		2013
	Expected dividend yield	0%		0%
	Risk-free interest rate	0.79% to 1.16%		1.04% to 1.86%
	Expected term (in years)	5.5 - 6.1 years		5.7 - 6.1 years
	Expected volatility	58.09% - 59.92%		56.34% - 56.84%

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2014
Income Taxes
Schedule of components of income before income taxes	The components of income before income taxes for the years ended December 31, 2012, 2013, and 2014 are as follows (in thousands):

		2012			2013			2014
	Domestic	$	3,959		$	8,237		$	2,212
	Foreign		(441	)		(2,264	)		3,038

	Income before income tax provision	$	3,518		$	5,973		$	5,250



Schedule of provision for income tax expense	The provision for income tax expense for the years ended December 31, 2012, 2013 and 2014 consists of the following components (in thousands):

		2012			2013			2014
	Current tax provision:
	State	$	330		$	119		$	548
	Foreign		(33	)		492			777

	Total current expense		297			611			1,325

	Deferred tax provision:
	Federal	$	458		$	737		$	737
	State		40			273			126
	Foreign		(315	)		(610	)		126

	Total deferred expense		183			400			989

	Total income tax provision	$	480		$	1,011		$	2,314




Schedule of income taxes related to the Company's income from operations and the amount computed using the federal statutory income tax rate	Income taxes related to the Company's income from operations differ from the amount computed using the federal statutory income tax rate as follows (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Tax provision computed at the federal statutory rate	$	1,231		$	2,090		$	1,837
	Foreign tax rate differential		(127	)		(3	)		(580	)
	Tax (benefit)/provision related to exercised stock options/warrants		(9,996	)		(1,423	)		704
	Research and development tax credits		(205	)		51			(320	)
	Adjustment to prior year deferred and other		(1,439	)		227			282
	Change in valuation allowance		10,302			(1,008	)		(828	)
	Taxable goodwill		499			737			737
	State income taxes		215			340			482

	Provision for income taxes	$	480		$	1,011		$	2,314




Schedule of the Company's deferred tax assets (liabilities)	As of December 31, 2013 and 2014, the Company's deferred tax assets (liabilities) were as follows (in thousands):

		2013			2014
	Deferred tax assets:
	Net operating losses	$	19,675		$	15,882
	Unused research and development credits		3,450			3,414
	Deferred revenue		885			586
	Stock-based compensation		4,235			5,741
	Accrued expenses		570			827
	Deferred rent		149			70
	Fixed Assets		276			181
	Acquisition-related expenses		68			68
	Allowance for doubtful accounts		79			189
	Alternative Minimum Tax credit available		34			34
	Other		166			219
	Less: valuation allowance		(25,930	)		(25,647	)

		$	3,657		$	1,564
	Deferred tax liabilities:
	Intangible assets		(6,727	)		(5,434	)
	Other		(22	)		(207	)

	Net deferred tax liability	$	(3,092	)	$	(4,077	)

Fair_Value_Measurement_Tables

Fair Value Measurement (Tables)	12 Months Ended
Fair Value Measurement (Tables)	Dec. 31, 2014
Fair Value Measurement
Schedule of assets and liabilities measured at fair value on a recurring basis

		Fair Value Measurement
		at December 31, 2013
	(in thousands)	Total			Level 1		Level 2			Level 3
	Money market	$	18,345		$	18,345	$	—		$	—
	Contingent HCL-EMS acquisition consideration		891			—		—			891
	Contingent oneTEM acquisition consideration		206			—		—			206

		$	19,442		$	18,345	$	—		$	1,097




		Fair Value Measurement
		at December 31, 2014
	(in thousands)	Total			Level 1		Level 2			Level 3
	Money market	$	18,372		$	18,372	$	—		$	—
	Contingent HCL-EMS acquisition consideration		541			—		—			541
	Contingent oneTEM acquisition consideration		235			—		—			235

		$	19,148		$	18,372	$	—		$	776




Changes in the fair value of the Level 3 liability
		Contingent acquisition consideration
		Years Ended December 31,
		2013					2014
	(in thousands)	HCL-EMS			oneTEM		HCL-EMS			oneTEM
	Balance, Beginning of Period	$	2,046		$	—	$	891		$	206
	Initial earn-out consideration		—			181		—			—
	Cash payments		(1,000	)		—		(350	)		—
	Imputed interest		12			25		—			29
	Second year earn-out adjustment		(167	)		—		—			—

	Balance, End of Period	$	891		$	206	$	541		$	235

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information: (Tables)	12 Months Ended
Supplemental Cash Flow Information: (Tables)	Dec. 31, 2014
Supplemental Cash Flow Information:
Schedule of information about other cash flow activities

	(in thousands)	2012		2013		2014
	SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
	Cash paid for:
	Interest	$	127	$	86	$	31
	Income tax payments	$	284	$	388	$	585
	NON-CASH TRANSACTIONS:
	NON-CASH TRANSACTIONS:
	Deferred purchase price in connection with Anomalous acquisition	$	950	$	—	$	—
	Deferred purchase price in connection with ttMobiles acquisition	$	2,315	$	—	$	—
	Deferred purchase price in connection with Symphony acquisition	$	10,942	$	—	$	—
	Deferred purchase price in connection with oneTEM acquisition	$	—	$	616	$	—
	Issuance of common stock in payment of board of directors fees	$	21	$	—	$	—
	Repurchase of common stock settled in January 2013	$	1,696	$	—	$	—

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2014
Commitments and Contingencies
Schedule of obligation for future minimum rental payments related to leases
	As of December 31, 2014, the Company's obligation for future minimum rental payments related to these leases is as follows:

	(in thousands)	Operating Leases		Financed Lease
	(in thousands)	Operating Leases		Obligations
	2015	$	6,441	$	814
	2016		4,831		—
	2017		2,810		—
	2018		1,709		—
	2019		1,138		—
	thereafter		360		—

	Total future minimum lease obligations	$	17,289	$	814


	Less: amount representing interest				(24	)

	Present value of minimum lease obligations			$	790

Valuation_and_Qualifying_Accou1

Valuation and Qualifying Accounts (Tables)	12 Months Ended
Valuation and Qualifying Accounts (Tables)	Dec. 31, 2014
Valuation and Qualifying Accounts
Schedule of valuation and qualifying accounts

	(in thousands)	Balance at		Additions		Deductions,			Balance at
		Beginning of		Charged to		Write-offs and			End of Year
		Year		Costs and		Adjustments
				Expenses
	Allowance for doubtful accounts:
	Year ended December 31, 2012	$	102		96		—		$	198


	Year ended December 31, 2013	$	198		106		21		$	283


	Year ended December 31, 2014	$	283		261		(44	)	$	588

Summarized_Unaudited_Quarterly1

Summarized Unaudited Quarterly Results (Tables)	12 Months Ended
Summarized Unaudited Quarterly Results (Tables)	Dec. 31, 2014
Summarized Unaudited Quarterly Results
Schedule of quarterly financial data

		For the three months ended
		March 31,		June 30,		September 30,		December 31,		March 31,			June 30,			September 30,		December 31,
		2013		2013		2013		2013		2014			2014			2014		2014
	Revenue	$	44,860	$	46,407	$	47,620	$	50,027	$	50,394		$	52,674		$	54,481	$	54,927
	Cost of revenue		20,816		20,836		21,346		21,980		23,732			24,207			25,454		24,071

	Gross profit		24,044		25,571		26,274		28,047		26,662			28,467			29,027		30,856
	Total operating expenses		23,108		24,725		24,950		26,040		26,469			28,292			27,526		27,521

	Income from operations		936		846		1,324		2,007		193			175			1,501		3,335
	Other income (expense), net		420		119		253		68		(15	)		(30	)		69		22

	Income before income taxes		1,356		965		1,577		2,075		178			145			1,570		3,357
	Income tax provision		231		415		22		343		445			548			635		686

	Net income (loss)	$	1,125	$	550	$	1,555	$	1,732	$	(267	)	$	(403	)	$	935	$	2,671


	Income (loss) per common share
	Basic	$	0.03	$	0.01	$	0.04	$	0.05	$	(0.01	)	$	(0.01	)	$	0.02	$	0.07
	Diluted	$	0.03	$	0.01	$	0.04	$	0.04	$	(0.01	)	$	(0.01	)	$	0.02	$	0.07

Organization_Description_of_Bu1

Organization, Description of Business (Details) (USD $)	12 Months Ended	1 Months Ended
Organization, Description of Business (Details) (USD $)	Dec. 31, 2012	Apr. 30, 2012
Public Offerings
Proceeds from initial public offering, net of underwriting discounts and commissions and other offering costs	$37,729,000
Common Stock [Member]
Public Offerings
Issuance of shares, net of issuance costs (in shares)	2,200,000
April 2012 public offering \| Common Stock [Member]
Public Offerings
Issuance of shares, net of issuance costs (in shares)		2,200,000
Price to the public (in dollars per share)		$18.50
Proceeds from initial public offering, net of underwriting discounts and commissions and other offering costs		37,700,000
Offering costs		$3,000,000
Stock sold by certain existing stockholders (in shares)		7,000,000
April 2012 public offering \| Common Stock [Member] \| Underwriter option
Public Offerings
Stock sold by certain existing stockholders (in shares)		1,200,000

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	item	Dec. 31, 2013	Dec. 31, 2012
Cash and Cash Equivalents
Restricted cash and cash equivalents	$0
Cash and cash equivalents	51,300,000
Revenue Recognition
Reimbursed expenses included in revenue	100,000	100,000	200,000
Computers, furniture and equipment-net
Unbilled Receivables, Current	11,200,000	4,600,000
Impairment of Goodwill and Certain Other Long-Lived Assets
Number of reporting units	1
Impairment of goodwill	0	0
Impairment of purchased-intangible assets	$0	$0
Minimum [Member]
Computers, furniture and equipment-net
Useful life of computers, furniture and equipment	3 years
Impairment of Goodwill and Certain Other Long-Lived Assets
Weighted Average Useful Life	2 years
Maximum [Member]
Computers, furniture and equipment-net
Useful life of computers, furniture and equipment	7 years
Impairment of Goodwill and Certain Other Long-Lived Assets
Weighted Average Useful Life	10 years

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details 2) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash Held on Behalf of Customers
Funds held on behalf of customers	$15.50	$11.10

Business_Combinations_Details

Business Combinations (Details)

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Jan. 25, 2011

Sep. 30, 2014

Dec. 31, 2012

Sep. 30, 2014

Aug. 31, 2013

Apr. 30, 2013

Jan. 25, 2011

Mar. 16, 2011

Aug. 08, 2012

Jan. 10, 2012

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Jan. 10, 2012

Feb. 21, 2012

Feb. 28, 2013

Feb. 21, 2012

Aug. 08, 2012

Dec. 31, 2014

Feb. 28, 2013

Dec. 31, 2014

Aug. 08, 2012

Oct. 31, 2013

Dec. 31, 2014

Aug. 08, 2012

Apr. 18, 2013

Aug. 08, 2012

Apr. 30, 2014

Dec. 31, 2014

Apr. 18, 2013

USD ($)

Minimum [Member]

Maximum [Member]

Developed Technology Rights [Member]

Customer Relationships [Member]

Noncompete Agreements [Member]

Trade Names [Member]

HCL-EMS

Telwares

Anomalous Networks Inc [Member]

ttMobiles

Symphony

oneTEM

USD ($)

Contingent Consideration [Member]

First year earn-out

Second year earn-out

Developed Technology Rights [Member]

Customer Relationships [Member]

Installment Payment Due 16 March 2012 [Member]

USD ($)

Installment Payment Due 16 March 2012 [Member]

Developed Technology Rights [Member]

Customer Relationships [Member]

Noncompete Agreements [Member]

Trade Names [Member]

USD ($)

GBP (£)

USD ($)

Installment Payment Due February 21, 2013

Developed Technology Rights [Member]

Customer Relationships [Member]

Noncompete Agreements [Member]

Trade Names [Member]

USD ($)

Maximum [Member]

Cash payable on the six-month anniversary of the closing

Installment Payment Due 08 August 2013 [Member]

Consideration Payable on Achievement of Revenue Targets [Member]

Developed Technology Rights [Member]

Customer Relationships [Member]

Trade Names [Member]

USD ($)

GBP (£)

USD ($)

Contingent Consideration [Member]

Installment Payment Due February 21, 2013

Installment payment due first anniversary of closing

Customer Relationships [Member]

Noncompete Agreements [Member]

Trade Names [Member]

USD ($)

EUR (€)

USD ($)

GBP (£)

USD ($)

item

EUR (€)

GBP (£)

Contingent Consideration [Member]

USD ($)

item

GBP (£)

Business combinations

Earn-out payable, maximum amount

$1,900,000

$4,000,000

$6,400,000

$40,200,000

Deferred cash consideration paid

1,000,000

979,000

4,000,000

1,500,000

4,400,000

4,900,000

Deferred cash consideration retained

900,000

Deferred cash consideration

979,000

4,400,000

Contingent consideration under Indian purchase agreement

2,500,000

Deferred cash consideration

400,000

1,495,000

2,315,000

1,500,000

400,000

Unregistered shares of common stock issued as a consideration

165,775

Unvested and unregistered shares of common stock issued as consideration

132,617

Unvested and unregistered shares of common stock cancelled and retired

132,617

Marketability discount rate applied to the fair value of the unregistered and unvested shares (as a percent)

20.00%

Lock-up period of unregistered shares

1 year

Net assets

6,390,000

7,000,000

8,674,000

40,001,000

1,837,000

5,400,000

Number of anniversaries for which additional consideration payable following the closing date

Number of consecutive 12-month earn-out period

Earn-out period

12 months

Deferred cash consideration for four consecutive 12-month earn-out periods

200,000

Strategic consulting, software licenses and other

23,009,000

20,430,000

16,533,000

600,000

Anniversary payment

858,000

1,006,000

9,676,000

6,400,000

Deferred cash consideration paid related to indemnity matters

400,000

1,300,000

Deferred cash consideration change in purchase price due to net asset adjustment

200,000

Amount paid for indemnity matters resolved which was previously deducted from deferred cash consideration

1,300,000

Earn-out payable

Breakdown of purchase price

Cash

3,000,000

3,521,000

6,359,000

29,208,000

1,221,000

900,000

Fair value of contingent consideration

3,390,000

183,000

Common stock

1,984,000

Fair value of deferred purchase price

10,793,000

433,000

Total

6,390,000

40,001,000

7,000,000

8,674,000

1,837,000

Allocation of purchase consideration:

Accounts receivable

2,269,000

Prepaid and other current assets

125,000

Current assets

1,140,000

2,469,000

5,628,000

565,000

Property and equipment

273,000

47,000

188,000

602,000

10,000

Other assets

10,000

Intangible assets

2,700,000

840,000

1,860,000

2,857,000

2,017,000

236,000

553,000

51,000

4,288,000

1,178,000

2,606,000

116,000

388,000

13,790,000

9,680,000

4,050,000

60,000

870,000

535,000

37,000

298,000

Goodwill.

65,348,000

65,963,000

65,825,000

2,243,000

4,477,000

3,557,000

20,936,000

655,000

Total assets acquired

8,531,000

10,502,000

40,956,000

2,100,000

Deposits and non-current assets

170,000

Accounts payable

-229,000

Accrued expenses

-8,283,000

-8,871,000

-1,042,000

Accounts payable and accrued expenses

-394,000

-848,000

-335,000

-152,000

Deferred revenue

-119,000

-370,000

-26,000

-620,000

Deferred taxes

-767,000

-954,000

-111,000

Total

$6,390,000

$7,000,000

$8,674,000

$40,001,000

$1,837,000

$5,400,000

Weighted Average Useful Life

2 years

10 years

6 years 1 month 6 days

8 years 8 months 12 days

2 years

3 years 9 months 18 days

4 years

9 years

5 years

4 years

2 years

3 years

5 years

9 years

2 years

4 years

9 years

5 years

3 years

8 years

2 years 8 months 12 days

2 years

Unaudited_Pro_Forma_Results_De

Unaudited Pro Forma Results (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Unaudited Pro Forma Results
Revenue	$212,476	$189,165
Operating income	5,204	5,011
Net income (loss)	$2,936	$4,860
Basic income (loss) per common share (in dollars per share)	$0.08	$0.13
Diluted income (loss) per common share (in dollars per share)	$0.07	$0.12

Income_Loss_per_Share_Applicab2

Income (Loss) per Share Applicable to Common Stockholders (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Basic and diluted net income (loss) per common share
Net income	$2,671	$935	($403)	($267)	$1,732	$1,555	$550	$1,125	$2,936	$4,962	$3,038
Basic weighted-average common shares used to compute basic net income per share									38,642	37,706	36,492
Outstanding stock options									-2,328	-2,623	-3,230
Outstanding restricted stock units									-186	-141
Common stock warrants									1	2	15
Anomalous unvested and unregistrer shares											133
Weighted-average common shares used to compute diluted net income (loss) per share									41,157	40,472	39,870
Basic income per common share (in dollars per share)	$0.07	$0.02	($0.01)	($0.01)	$0.05	$0.04	$0.01	$0.03	$0.08	$0.13	$0.08
Diluted income per common share (in dollars per share)	$0.07	$0.02	($0.01)	($0.01)	$0.04	$0.04	$0.01	$0.03	$0.07	$0.12	$0.08

Income_Loss_per_Share_Applicab3

Income (Loss) per Share Applicable to Common Stockholders (Details 2)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Outstanding stock options
Potentially dilutive securities
Potential dilutive securities considered as anti-dilutive (in shares)	3,276	3,547	3,624
Restricted Stock Units (RSUs) [Member]
Potentially dilutive securities
Potential dilutive securities considered as anti-dilutive (in shares)	986	670	221
Warrant [Member]
Potentially dilutive securities
Potential dilutive securities considered as anti-dilutive (in shares)	9	9	10

Computers_Furniture_and_Equipm2

Computers, Furniture and Equipment-Net (Details) (USD $)	12 Months Ended
Computers, Furniture and Equipment-Net (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	$17,326,000	$14,890,000
Less: accumulated depreciation	-12,109,000	-10,573,000
Computers, furniture and equipment-net	5,217,000	4,317,000
Depreciation and amortization expense	2,600,000	2,300,000	2,000,000
Computers and software
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	14,386,000	12,316,000
Assets Held under Capital Leases [Member]
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	2,500,000	2,500,000
Less: accumulated depreciation	2,500,000	2,400,000
Furniture and Fixtures [Member]
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	1,345,000	1,194,000
Leasehold Improvements [Member]
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	$1,595,000	$1,380,000

Restructuring_Charge_Details

Restructuring Charge (Details) (USD $)	6 Months Ended	12 Months Ended
Restructuring Charge (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2013
Restructuring Charge
Adjustment to restructuring charges for inability to sublease the office space			$100,000
Final termination fees for lease termination	900,000
Adjustment to restructuring charges for lease termination	500,000
Activity in the liabilities related to the restructuring charge
Remaining liability at the beginning of the period	605,000	160,000	605,000
Cash payments		-160,000	-1,111,000
Non-cash charges and other			12,000
Restructuring charge			654,000
Remaining liability at the end of the period		0	160,000
Less: current portion		0
Long-term portion		0
Lease costs, net of estimated sublease income
Activity in the liabilities related to the restructuring charge
Remaining liability at the beginning of the period	613,000	160,000	613,000
Cash payments		-160,000	-1,111,000
Non-cash charges and other			4,000
Restructuring charge			654,000
Remaining liability at the end of the period		0	160,000
Other Restructuring [Member]
Activity in the liabilities related to the restructuring charge
Remaining liability at the beginning of the period	-8,000		-8,000
Non-cash charges and other			8,000
Remaining liability at the end of the period		$0

Intangible_Assets_and_Goodwill2

Intangible Assets and Goodwill (Details) (USD $)	12 Months Ended			1 Months Ended
Intangible Assets and Goodwill (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012
Intangible assets
Net	$28,506,000
Trademarks	247,000	247,000
Intangible assets, net	28,753,000	36,637,000
Amortization expense of intangible assets	7,200,000	8,100,000	6,700,000
Estimate of future amortization expense for acquired intangible assets
2015	5,971,000
2016	5,565,000
2017	4,978,000
2018	4,578,000
2019	3,585,000
Thereafter	3,829,000
Net	28,506,000
Patents [Member]
Intangible assets
Gross	1,054,000	1,054,000
Less: accumulated amortization	-1,029,000	-897,000
Net	25,000	157,000
Weighted Average Useful Life	8 years
Estimate of future amortization expense for acquired intangible assets
Net	25,000	157,000
Developed Technology Rights [Member]
Intangible assets
Gross	14,802,000	15,033,000
Less: accumulated amortization	-10,245,000	-7,853,000
Net	4,557,000	7,180,000
Weighted Average Useful Life	6 years 1 month 6 days
Estimate of future amortization expense for acquired intangible assets
Net	4,557,000	7,180,000
Customer Relationships [Member]
Intangible assets
Gross	37,758,000	37,935,000
Less: accumulated amortization	-19,208,000	-15,155,000
Net	18,550,000	22,780,000
Weighted Average Useful Life	8 years 8 months 12 days
Estimate of future amortization expense for acquired intangible assets
Net	18,550,000	22,780,000
Noncompete Agreements [Member]
Intangible assets
Gross	1,094,000	1,144,000
Less: accumulated amortization	-1,049,000	-935,000
Net	45,000	209,000
Weighted Average Useful Life	2 years
Estimate of future amortization expense for acquired intangible assets
Net	45,000	209,000
Strategic marketing agreement
Intangible assets
Gross	6,203,000	6,203,000
Less: accumulated amortization	-1,090,000	-597,000
Net	5,113,000	5,606,000
Weighted Average Useful Life	10 years
Estimate of future amortization expense for acquired intangible assets
Net	5,113,000	5,606,000
Trade Names [Member]
Intangible assets
Gross	857,000	885,000
Less: accumulated amortization	-641,000	-427,000
Net	216,000	458,000
Weighted Average Useful Life	3 years 9 months 18 days
Estimate of future amortization expense for acquired intangible assets
Net	216,000	458,000
Customer Contracts [Member]
Intangible assets
Purchase consideration				$1,250,000

Intangible_Assets_and_Goodwill3

Intangible Assets and Goodwill (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Jan. 10, 2012	Feb. 21, 2012	Aug. 08, 2012	Apr. 18, 2013	Jan. 25, 2011
Changes in carrying amounts of goodwill
Balance at the beginning of the period	$65,963	$65,825
Foreign exchange translation effect	-615	-517
Balance at the end of the period	65,348	65,963
Anomalous Networks Inc [Member]
Changes in carrying amounts of goodwill
Balance at the beginning of the period			4,477
Balance at the end of the period			4,477
ttMobiles
Changes in carrying amounts of goodwill
Balance at the beginning of the period				3,557
Balance at the end of the period				3,557
Symphony
Changes in carrying amounts of goodwill
Balance at the beginning of the period					20,936
Balance at the end of the period					20,936
oneTEM
Changes in carrying amounts of goodwill
Balance at the beginning of the period						655
Goodwill		655
Balance at the end of the period						655
HCL-EMS
Changes in carrying amounts of goodwill
Balance at the beginning of the period							2,243
Balance at the end of the period							$2,243

Debt_Details

Debt (Details)

12 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2014

Aug. 31, 2013

Apr. 30, 2013

Mar. 16, 2011

Jan. 10, 2012

Feb. 21, 2012

Feb. 28, 2013

Aug. 08, 2012

Dec. 31, 2014

Aug. 08, 2012

Oct. 31, 2013

Feb. 28, 2013

Dec. 31, 2014

Apr. 18, 2013

Sep. 30, 2014

Dec. 31, 2014

Dec. 31, 2013

Jan. 25, 2011

Apr. 30, 2014

Dec. 31, 2014

Apr. 18, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

USD ($)

HCL-EMS

Telwares

Anomalous Networks Inc [Member]

ttMobiles

Symphony

oneTEM

Contingent Consideration [Member]

Deferred Purchase Price [Member]

Capital Lease and Other Obligations [Member]

Line of credit

First year earn-out

Second year earn-out

Installment Payment Due 16 March 2012 [Member]

USD ($)

Installment Payment Due 16 March 2012 [Member]

USD ($)

GBP (£)

Installment Payment Due February 21, 2013

USD ($)

Maximum [Member]

Consideration Payable on Achievement of Revenue Targets [Member]

Installment Payment Due 08 August 2013 [Member]

Cash payable on the six-month anniversary of the closing

item

Installment Payment Due February 21, 2013

HCL-EMS

oneTEM

USD ($)

EUR (€)

USD ($)

GBP (£)

USD ($)

GBP (£)

USD ($)

EUR (€)

USD ($)

EUR (€)

Installment payment due first anniversary of closing

USD ($)

item

GBP (£)

Debt

Total notes payable

$1,566,000

$2,034,000

$541,000

$891,000

$235,000

$684,000

$790,000

$459,000

Less current portion

-1,400,000

-1,831,000

Notes payable, less current portion

166,000

203,000

Gross amount of earn-out

1,900,000

4,000,000

40,200,000

6,400,000

Unamortized discount

37,000

87,000

Maximum borrowing capacity

8,000,000

Percentage of accounts receivable with JP Morgan Chase Bank, N.A

80.00%

Interest rate margin (as a percent)

2.00%

Outstanding principal amount

Interest accrued on the deferred cash consideration

Deferred cash consideration

979,000

4,400,000

Deferred cash consideration

400,000

1,495,000

2,315,000

1,500,000

400,000

Deferred cash consideration paid

1,000,000

979,000

4,000,000

1,500,000

4,900,000

4,400,000

Deferred cash consideration retained

900,000

Payment

858,000

1,006,000

9,676,000

6,400,000

Deferred cash consideration paid related to indemnity matters

400,000

1,300,000

400,000

Deferred cash consideration change in purchase price due to net asset adjustment

200,000

Amount paid for indemnity matters resolved which was previously deducted from deferred cash consideration

1,300,000

Imputed interest recorded based on weighted average cost of debt

600,000

100,000

Contingent consideration under Indian purchase agreement

2,500,000

Earn-out payable, maximum amount

1,900,000

4,000,000

40,200,000

6,400,000

Number of consecutive 12-month earn-out period

Earn-out period

12 months

Deferred cash consideration for four consecutive 12-month earn-out periods

€ 200,000

£ 200,000

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)	1 Months Ended				12 Months Ended			0 Months Ended	1 Months Ended
Stockholders' Equity (Details) (USD $)	Nov. 30, 2014	Jan. 31, 2013	Dec. 31, 2012	Nov. 30, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 10, 2012	Mar. 31, 2013	Jun. 05, 2014
Common Stock
Common stock, par value (in dollars per share)					$0.00	$0.00
Common stock, shares authorized					150,000,000	150,000,000
Common stock, shares issued					38,621,169	38,160,928
Common stock, shares outstanding					38,621,169	38,160,928
Stock-based compensation expenses					$18,498,000	$13,259,000	$9,165,000
Common stock reserved for issuance										950,000
Unused funds	2,300,000
Authorized amount of shares repurchased	30,000,000			20,000,000
Shares repurchased					579,251	519,760	357,751
Average price of shares repurchased and retired (in dollars per share)					$13.66	$13.26	$12.29
Amount of shares repurchased and retired					7,900,000	6,900,000	4,400,000
Shares settled and retired		141,200	216,551
Settlement convention trading period						3 days
Preferred Stock
Preferred stock, par value (in dollars per share)					$0.00	$0.00
Preferred stock, shares authorized					5,000,000	5,000,000
Preferred stock, shares issued					0	0
Preferred stock, shares outstanding					0	0
Anomalous Networks Inc [Member]
Common Stock
Unregistered shares of common stock issued as a consideration							165,775	165,775
Unvested and unregistered shares of common stock issued as consideration							132,617	132,617
Unvested and unregistered shares of common stock cancelled and retired						132,617			132,617
Employees and members of board of directors
Common Stock
Stock-based compensation expenses					$4,500,000	$800,000
Board of Directors [Member]
Common Stock
Shares issued					70,523	58,975
Employees
Common Stock
Shares issued					230,681	17,941

Stockholders_Equity_Details_2

Stockholders' Equity (Details 2) (USD $)	1 Months Ended	12 Months Ended
Stockholders' Equity (Details 2) (USD $)	Mar. 31, 2011	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 22, 2011
Dell strategic relationship agreement
Warrants
Term of strategic relationship agreement	49 months
Common Stock Warrants
Warrants
Proceeds related to warrant exercise		$1,850	$34,747
Shares issued in cash exercise		710	14,907
Exercise price of warrant (in dollars per share)		14.02
Warrants to purchase common stock
Outstanding at beginning of the year (in shares)		10,710	25,617	589,941
Exercised (in shares)		-710	-14,907	-449,877
Issued (in shares)				10,000
Cancelled (in shares)				-124,447
Outstanding at end of the period (in shares)		10,000	10,710	25,617
Weighted average exercise price (in dollars per share)		14.02
Common Stock Warrants \| Dell strategic relationship agreement
Warrants
Exercise price of warrant (in dollars per share)					5.987
Warrants to purchase common stock
Weighted average exercise price (in dollars per share)					5.987
Common Stock Warrants \| Dell strategic relationship agreement \| Maximum [Member]
Warrants
Number of shares which can be purchased from issuance of warrant					1,282,789
Common Stock Warrants \| Dell strategic relationship agreement \| Achievement of certain thresholds
Warrants
Term of strategic relationship agreement	49 months
Common Stock Warrants \| Dell strategic relationship agreement \| Achievement of certain thresholds \| Maximum [Member]
Warrants
Number of shares which can be purchased from issuance of warrant					1,282,789

Stockholders_Equity_Details_3

Stockholders' Equity (Details 3) (USD $)	12 Months Ended
Stockholders' Equity (Details 3) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock option
Number of stock-based compensation plans		5
Proceeds from stock option exercises
Stock-based compensation expenses	$18,498,000	$13,259,000	$9,165,000
Various Stock Option Plans [Member]
Proceeds from stock option exercises
Stock-based compensation expenses	6,600,000	8,200,000
Total unrecognized compensation cost, net of estimated forfeitures, related to unvested units	6,300,000
Outstanding stock options
Stock option
Vesting period		4 years
Award expiration from grant date		10 years
Number of Shares
Outstanding at beginning of the year (in shares)	6,166,401	6,854,369	6,670,335
Granted (in shares)		463,475	2,326,500
Forfeited (in shares)	-109,234	-135,626	-282,909
Exercised (in shares)	-453,275	-1,015,817	-1,859,557
Outstanding at end of the period (in shares)	5,603,892	6,166,401	6,854,369	6,670,335
Exercisable (vested) at end of the period (in shares)	4,762,752	4,086,272	3,226,280
Available for future grants at the end of the period (in shares)	1,068,405
Weighted Average Exercise Price
Outstanding at beginning of the year (in dollars per share)	$8.81	$7.92	$3.60
Granted (in dollars per share)		$14.25	$15.83
Forfeited (in dollars per share)	$14.43	$13.15	$8.67
Exercised (in dollars per share)	$4.62	$4.75	$2.19
Outstanding at end of the period (in dollars per share)	$9.04	$8.81	$7.92	$3.60
Exercisable at end of the period (in dollars per share)	$8.05
Weighted Average Contractual Life (years)
Outstanding at end of the period	5 years 10 months 24 days	6 years 10 months 24 days	7 years 6 months	7 years 3 months 18 days
Exercisable at end of the period	5 years 7 months 6 days
Intrinsic Value
Outstanding	28,536,126	57,358,729	35,977,101
Vested	28,205,096	46,133,626	27,902,361
Exercised	5,451,897	14,932,262	29,851,276
Proceeds from stock option exercises
Proceeds from stock option exercises	2,100,000	4,800,000
Outstanding stock options \| Minimum [Member]
Weighted Average Exercise Price
Exercised (in dollars per share)	$0.25	$0.25
Outstanding stock options \| Maximum [Member]
Weighted Average Exercise Price
Exercised (in dollars per share)	$17.74	$20.39
Restricted Stock Units (RSUs) [Member]
Proceeds from stock option exercises
Aggregate fair value of grant	16,100,000	10,200,000
Stock-based compensation expenses	7,400,000	4,200,000
Total unrecognized compensation cost, net of estimated forfeitures, related to unvested units	$14,000,000
Number of Shares
Outstanding at beginning of the year (in shares)	808,793	221,314
Granted (in shares)	879,122	684,084	223,814
Vested (in shares)	-284,303	-92,338
Forfeited (in shares)	-231,107	-4,267	-2,500
Outstanding at end of the period (in shares)	1,172,505	808,793	221,314
Weighted Average Fair Value
Outstanding at beginning of the year (in dollars per share)	$15.29	$17.27
Granted (in dollars per share)	$18.36	$14.89	$17.30
Vested (in dollars per share)	$15.99	$17.05
Forfeited (in dollars per share)	$15.26	$15.70	$20.35
Outstanding at end of the period (in dollars per share)	$17.36	$15.29	$17.27
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Stock option
Vesting period	1 year	1 year
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Stock option
Vesting period	3 years	3 years
Performance Shares [Member]
Number of Shares
Vested (in shares)	135,912

Stockholders_Equity_Details_4

Stockholders' Equity (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Total compensation expense for stock-based employee compensation awards
Total stock-based employee compensation	$18,498	$13,259	$9,165
Stock-based compensation expense to be recognized for equity awards outstanding
2014	13,148
2015	6,610
2016	950
Total stock-based employee compensation yet to be recognized	20,708
Cost of goods sold
Total compensation expense for stock-based employee compensation awards
Total stock-based employee compensation	3,873	2,108	1,347
Sales and marketing expenses
Total compensation expense for stock-based employee compensation awards
Total stock-based employee compensation	5,065	3,941	2,133
General and administrative expenses
Total compensation expense for stock-based employee compensation awards
Total stock-based employee compensation	6,802	6,220	5,105
Research and development.
Total compensation expense for stock-based employee compensation awards
Total stock-based employee compensation	$2,758	$990	$580

Stockholders_Equity_Details_5

Stockholders' Equity (Details 5) (USD $)	12 Months Ended
Stockholders' Equity (Details 5) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Assumption for fair value of the option granted
Weighted average fair value per share of stock options granted	$7.55	$8.50
Stock Options and Restricted Stock Units RSU [Member]
Assumption for fair value of the option granted
Expected dividend yield (as a percent)	0.00%	0.00%
Risk-free interest rate, minimum (as a percent)	1.04%	0.79%
Risk-free interest rate, maximum (as a percent)	1.86%	1.16%
Expected volatility, minimum (as a percent)	56.34%	58.09%
Expected volatility, maximum (as a percent)	56.84%	59.92%
Stock Options and Restricted Stock Units RSU [Member] \| Minimum [Member]
Assumption for fair value of the option granted
Expected term	5 years 8 months 12 days	5 years 6 months
Stock Options and Restricted Stock Units RSU [Member] \| Maximum [Member]
Assumption for fair value of the option granted
Expected term	6 years 1 month 6 days	6 years 1 month 6 days
Outstanding stock options \| Minimum [Member]
Assumption for fair value of the option granted
Term of U.S. Treasury yield used in determining risk-free rate			5 years
Outstanding stock options \| Maximum [Member]
Assumption for fair value of the option granted
Term of U.S. Treasury yield used in determining risk-free rate			7 years

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	item	Dec. 31, 2013	Dec. 31, 2012
Components of loss before income taxes
Domestic									$2,212,000	$8,237,000	$3,959,000
Foreign									3,038,000	-2,264,000	-441,000
Income before income tax provision	3,357,000	1,570,000	145,000	178,000	2,075,000	1,577,000	965,000	1,356,000	5,250,000	5,973,000	3,518,000
Current tax provision:
State									548,000	119,000	330,000
Foreign									777,000	492,000	-33,000
Total current expense									1,325,000	611,000	297,000
Deferred tax provision:
Federal									737,000	737,000	458,000
State									126,000	273,000	40,000
Foreign									126,000	-610,000	-315,000
Total deferred expense									989,000	400,000	183,000
Total income tax provision	686,000	635,000	548,000	445,000	343,000	22,000	415,000	231,000	2,314,000	1,011,000	480,000
Reconciliation of income taxes related to the income (loss) from operations and the amount computed using Federal statutory income tax rate
Tax (benefit) provision computed at the federal statutory rate									1,837,000	2,090,000	1,231,000
Foreign tax rate differential									-580,000	-3,000	-127,000
Tax (benefit)/provision related to exercised stock options/warrants									704,000	-1,423,000	-9,996,000
Research and development tax credits									-320,000	51,000	-205,000
Adjustment to prior year deferred and other									282,000	227,000	-1,439,000
Change in valuation allowance									-828,000	-1,008,000	10,302,000
Taxable goodwill									737,000	737,000	499,000
State income taxes									482,000	340,000	215,000
Total income tax provision	686,000	635,000	548,000	445,000	343,000	22,000	415,000	231,000	2,314,000	1,011,000	480,000
Deferred tax assets:
Net operating losses	15,882,000				19,675,000				15,882,000	19,675,000
Unused research and development credits	3,414,000				3,450,000				3,414,000	3,450,000
Deferred revenue	586,000				885,000				586,000	885,000
Stock-based compensation	5,741,000				4,235,000				5,741,000	4,235,000
Accrued expenses	827,000				570,000				827,000	570,000
Deferred rent	70,000				149,000				70,000	149,000
Fixed assets	181,000				276,000				181,000	276,000
Acquisition-related expenses	68,000				68,000				68,000	68,000
Allowance for doubtful accounts	189,000				79,000				189,000	79,000
Alternative Minimum Tax credit available	34,000				34,000				34,000	34,000
Other	219,000				166,000				219,000	166,000
Less: valuation allowance	-25,647,000				-25,930,000				-25,647,000	-25,930,000
Deferred tax assets, gross	1,564,000				3,657,000				1,564,000	3,657,000
Deferred tax liabilities:
Intangible assets	-5,434,000				-6,727,000				-5,434,000	-6,727,000
Other	-207,000				-22,000				-207,000	-22,000
Net deferred tax liability	-4,077,000				-3,092,000				-4,077,000	-3,092,000
Number of consecutive years of book income									3
Period of cumulative loss									3 years
Decrease in valuation allowance									-200,000
Net operating loss carryforwards resulting from tax deductions related to stock options awarded									44,700,000
Net operating loss carryforwards
Net operating loss carryforwards	75,200,000								75,200,000
Unrecognized tax benefits									0	0
Accruals for interest or penalties	0				0				0	0
Undistributed foreign earnings	5,500,000								5,500,000
Federal
Net operating loss carryforwards
Net operating loss carryforwards	30,500,000								30,500,000
Net operating loss carryforwards available to offset future taxable income	50,000,000								50,000,000
Net operating loss carryforwards available in prescribed increments in each future year through December 31, 2031	25,200,000								25,200,000
Federal \| Research and development
Net operating loss carryforwards
Tax credit carryforward	$3,800,000								$3,800,000

Fair_Value_Measurement_Details

Fair Value Measurement (Details) (USD $)	1 Months Ended	0 Months Ended		12 Months Ended
	Jan. 31, 2011	Apr. 18, 2013	Apr. 18, 2013	Dec. 31, 2014	Dec. 31, 2013	Jan. 25, 2011	Dec. 31, 2011
	Jan. 31, 2011	item	item	Dec. 31, 2014	Dec. 31, 2013	Jan. 25, 2011	Dec. 31, 2011
HCL-EMS
Changes in the fair value of the Level 3 liability
Contingent earn-out cash consideration recognized						$3,390,000
HCL-EMS \| Minimum [Member]
Changes in the fair value of the Level 3 liability
Percentage of specified revenues from specified customers acquired, used in determining contingent consideration	7.50%
HCL-EMS \| Maximum [Member]
Changes in the fair value of the Level 3 liability
Percentage of specified revenues from specified customers acquired, used in determining contingent consideration	15.00%
oneTEM
Changes in the fair value of the Level 3 liability
Percentage of specified revenues from specified customers acquired, used in determining contingent consideration		9.00%
Contingent earn-out cash consideration recognized		183,000	183,000
Number of anniversaries for which additional consideration payable following the closing date		4	4
Percentage of growth in specified revenues from specified customers during earn out period				9.00%
Number of consecutive 12-month earn-out period		4	4
Fair Value, Inputs, Level 1 [Member]
Fair value measurement
Cash and cash equivalents				18,400,000	18,300,000
Fair Value, Inputs, Level 3 [Member] \| HCL-EMS
Changes in the fair value of the Level 3 liability
Satisfaction of indemmity matter				400,000
Fair Value, Inputs, Level 3 [Member] \| HCL-EMS \| Income approach
Changes in the fair value of the Level 3 liability
Contingent earn-out cash consideration recognized						3,400,000
Fair Value, Inputs, Level 3 [Member] \| oneTEM \| Income approach
Changes in the fair value of the Level 3 liability
Contingent earn-out cash consideration recognized		200,000	200,000
Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| HCL-EMS \| Income approach
Changes in the fair value of the Level 3 liability
Discount rate assumption, used in determining contingent consideration (as a percent)	10.50%
Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| HCL-EMS \| Income approach \| Minimum [Member]
Changes in the fair value of the Level 3 liability
Probability adjusted levels of revenue assumption, used in determining contingent consideration	12,600,000
Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| HCL-EMS \| Income approach \| Maximum [Member]
Changes in the fair value of the Level 3 liability
Probability adjusted levels of revenue assumption, used in determining contingent consideration	13,900,000
Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| oneTEM \| Income approach
Changes in the fair value of the Level 3 liability
Discount rate assumption, used in determining contingent consideration (as a percent)		15.00%
Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| oneTEM \| Income approach \| Minimum [Member]
Changes in the fair value of the Level 3 liability
Probability adjusted levels of revenue assumption, used in determining contingent consideration		200,000
Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| oneTEM \| Income approach \| Maximum [Member]
Changes in the fair value of the Level 3 liability
Probability adjusted levels of revenue assumption, used in determining contingent consideration		300,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member]
Fair value measurement
Total				19,148,000	19,442,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member] \| oneTEM
Fair value measurement
Recognized amount					206,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member] \| Contingent consideration \| HCL-EMS
Fair value measurement
Recognized amount				541,000	891,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member] \| Contingent consideration \| oneTEM
Fair value measurement
Recognized amount				235,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member] \| Money Market Funds [Member]
Fair value measurement
Cash and cash equivalents				18,372,000	18,345,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair value measurement
Total				18,372,000	18,345,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Money Market Funds [Member]
Fair value measurement
Cash and cash equivalents				18,372,000	18,345,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair value measurement
Total				776,000	1,097,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| oneTEM
Fair value measurement
Recognized amount					206,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| HCL-EMS
Fair value measurement
Recognized amount				541,000	891,000
Changes in the fair value of the Level 3 liability
Balance, Beginning of Period				891,000	891,000		2,046,000
Cash payments				-350,000	-1,000,000
Imputed interest					12,000
Second year earn-out adjustment					-167,000
Balance, End of Period				541,000	891,000		2,046,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Contingent consideration \| oneTEM
Fair value measurement
Recognized amount				235,000
Changes in the fair value of the Level 3 liability
Balance, Beginning of Period				206,000	206,000
Initial earn-out consideration					181,000
Imputed interest				29,000	25,000
Balance, End of Period				235,000	$206,000

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information: (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest	$31	$86	$127
Cash paid for income tax payments	585	388	284
NON-CASH TRANSACTIONS:
Issuance of common stock in payment of board of director fees			21
Repurchase of common stock settled in January 2013			1,696
Anomalous Networks Inc [Member]
NON-CASH TRANSACTIONS:
Deferred purchase price			950
ttMobiles
NON-CASH TRANSACTIONS:
Deferred purchase price			2,315
Symphony
NON-CASH TRANSACTIONS:
Deferred purchase price			10,942
oneTEM
NON-CASH TRANSACTIONS:
Deferred purchase price		$616

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended
Commitments and Contingencies (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Leases
2015	$6,441,000
2016	4,831,000
2017	2,810,000
2018	1,709,000
2019	1,138,000
Thereafter	360,000
Total future minimum lease obligations	17,289,000
Capital Leases
2015	814,000
Total future minimum lease obligations	814,000
Less: amount representing interest	-24,000
Present value of minimum lease obligations	790,000
Rent expense, included in general and administrative expense
Rent expense	$6,000,000	$5,600,000	$5,000,000

401k_Savings_Plans_Details

401(k) Savings Plans (Details) (USD $)	12 Months Ended
401(k) Savings Plans (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
401(k) Savings Plans
Cost of contributions made by the company to the Plan	$263,000	$195,000	$169,000
Minimum [Member]
401(k) Savings Plans
Employer's contribution as a percentage of employees' contributions	5.00%	5.00%	5.00%
Maximum [Member]
401(k) Savings Plans
Employer's contribution as a percentage of employees' contributions	10.00%	10.00%	10.00%

Valuation_and_Qualifying_Accou2

Valuation and Qualifying Accounts (Details) (Allowance for Doubtful Accounts [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and qualifying accounts
Balance at Beginning of Year	$283	$198	$102
Additions Charged to Costs and Expenses	261	106	96
Deductions, Write-offs and Adjustments	-44	21
Balance at End of Year	$588	$283	$198

Summarized_Unaudited_Quarterly2

Summarized Unaudited Quarterly Results (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Unaudited Quarterly Results
Revenue	$54,927	$54,481	$52,674	$50,394	$50,027	$47,620	$46,407	$44,860	$212,476	$188,914	$154,512
Cost of revenue	24,071	25,454	24,207	23,732	21,980	21,346	20,836	20,816	97,464	84,978	70,603
Gross profit	30,856	29,027	28,467	26,662	28,047	26,274	25,571	24,044	115,012	103,936	83,909
Total operating expenses	27,521	27,526	28,292	26,469	26,040	24,950	24,725	23,108
Income from operations	3,335	1,501	175	193	2,007	1,324	846	936	5,204	5,113	4,390
Other (expense) income, net	22	69	-30	-15	68	253	119	420
Income before income taxes	3,357	1,570	145	178	2,075	1,577	965	1,356	5,250	5,973	3,518
Income tax provision	686	635	548	445	343	22	415	231	2,314	1,011	480
Net income (loss)	$2,671	$935	($403)	($267)	$1,732	$1,555	$550	$1,125	$2,936	$4,962	$3,038
Income (loss) per common share:
Basic (in dollars per share)	$0.07	$0.02	($0.01)	($0.01)	$0.05	$0.04	$0.01	$0.03	$0.08	$0.13	$0.08
Diluted (in dollars per share)	$0.07	$0.02	($0.01)	($0.01)	$0.04	$0.04	$0.01	$0.03	$0.07	$0.12	$0.08