Perficient (PRFT) 10-Q 2 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 27, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Entity Registrant Name	PERFICIENT INC
Trading Symbol	PRFT
Entity Central Index Key	1,085,869
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		34,908,059

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 2,448	$ 10,113
Accounts receivable, net	108,090	103,702
Prepaid expenses	4,550	3,353
Other current assets	1,776	5,331
Total current assets	116,864	122,499
Property and equipment, net	7,425	8,888
Goodwill	304,583	275,205
Intangible assets, net	55,282	45,115
Other non-current assets	6,435	4,869
Total assets	490,589	456,576
Current liabilities:
Accounts payable	11,992	18,416
Other current liabilities	28,052	27,637
Total current liabilities	40,044	46,053
Long-term debt	65,000	32,000
Other non-current liabilities	19,029	19,058
Total liabilities	124,073	97,111
Stockholders' equity:
Common stock (par value $0.001 per share; 100,000,000 shares authorized, 47,023,531 shares issued and 33,445,194 shares outstanding as of September 30, 2017; 50,000,000 shares authorized, 45,895,086 shares issued and 33,865,688 shares outstanding as of December 31, 2016)	47	46
Additional paid-in capital	400,405	379,094
Accumulated other comprehensive loss	(2,023)	(2,743)
Treasury stock, at cost (13,578,337 shares as of September 30, 2017; 12,029,398 shares as of December 31, 2016)	(153,569)	(126,442)
Retained earnings	121,656	109,510
Total stockholders' equity	366,516	359,465
Total liabilities and stockholders' equity	$ 490,589	$ 456,576

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Condensed Consolidated Balance Sheets
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	50,000,000
Common stock, shares issued (in shares)	47,023,531	45,895,086
Common stock, shares outstanding (in shares)	33,445,194	33,865,688
Treasury stock, shares (in shares)	13,578,337	12,029,398

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Services	$ 114,144	$ 102,958	$ 319,825	$ 320,587
Software and hardware	6,323	11,184	22,591	31,907
Reimbursable expenses	3,271	5,011	9,367	14,897
Total revenues	123,738	119,153	351,783	367,391
Cost of revenues (exclusive of depreciation and amortization, shown separately below)
Cost of services	72,700	67,536	205,491	210,190
Software and hardware costs	5,168	10,194	18,860	27,348
Reimbursable expenses	3,271	5,011	9,367	14,897
Total cost of revenues	81,139	82,741	233,718	252,435
Gross margin	42,599	36,412	118,065	114,956
Selling, general and administrative	27,072	24,475	78,884	76,780
Depreciation	1,123	1,212	3,587	3,619
Amortization	3,936	3,266	11,098	9,937
Acquisition costs	(100)	310	1,283	715
Adjustment to fair value of contingent consideration	(389)	(865)	(828)	(1,817)
Income from operations	10,957	8,014	24,041	25,722
Net interest expense	440	335	1,444	1,322
Net other (income) expense	(15)	89	(84)	94
Income before income taxes	10,532	7,590	22,681	24,306
Provision for income taxes	3,505	2,045	10,535	7,540
Net income	$ 7,027	$ 5,545	$ 12,146	$ 16,766
Basic net income per share (in dollars per share)	$ 0.22	$ 0.16	$ 0.37	$ 0.49
Diluted net income per share (in dollars per share)	$ 0.21	$ 0.16	$ 0.36	$ 0.48
Shares used in computing basic net income per share (in shares)	32,673	34,128	32,997	34,040
Shares used in computing diluted net income per share (in shares)	33,991	35,077	34,085	35,012

Unaudited Condensed Consolidat5

Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 7,027	$ 5,545	$ 12,146	$ 16,766
Other comprehensive income (loss):
Foreign currency translation adjustment	137	(67)	720	(247)
Comprehensive income	$ 7,164	$ 5,478	$ 12,866	$ 16,519

Unaudited Condensed Consolidat6

Unaudited Condensed Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2016	$ 46	$ 379,094	$ (2,743)	$ (126,442)	$ 109,510	$ 359,465
Balance (in shares) at Dec. 31, 2016	33,866,000					33,865,688
Proceeds from the sales of stock through the Employee Stock Purchase Plan		135				$ 135
Proceeds from the sales of stock through the Employee Stock Purchase Plan (in shares)	8,000
Stock compensation related to restricted stock vesting and retirement savings plan contributions		10,595				10,595
Stock compensation related to restricted stock vesting and retirement savings plan contributions (in shares)	436,000
Purchases of treasury stock and buyback of shares for taxes				(26,495)		(26,495)
Purchases of treasury stock and buyback of shares for taxes (in shares)	(1,515,000)
Surrender of stock in conjunction with net working capital settlement				(632)		(632)
Surrender of stock in conjunction with net working capital settlement, shares	(34,000)
Issuance of stock in conjunction with acquisitions including stock attributed to future compensation	$ 1	10,581				10,582
Issuance of stock in conjunction with acquisitions including stock attributed to future compensation, shares	684,000
Net income					12,146	12,146
Foreign currency translation adjustment			720			720
Balance at Sep. 30, 2017	$ 47	$ 400,405	$ (2,023)	$ (153,569)	$ 121,656	$ 366,516
Balance (in shares) at Sep. 30, 2017	33,445,000					33,445,194

Unaudited Condensed Consolidat7

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES
Net income	$ 12,146	$ 16,766
Adjustments to reconcile net income to net cash provided by operations:
Depreciation	3,587	3,619
Amortization	11,098	9,937
Deferred income taxes	918	481
Non-cash stock compensation and retirement savings plan contributions	10,595	10,395
Adjustment to fair value of contingent consideration for purchase of business	(828)	(1,817)
Write-off of unamortized credit facility fees	246	0
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	1,415	12,877
Other assets	2,756	3,514
Accounts payable	(6,423)	(5,308)
Other liabilities	(5,386)	(10,565)
Net cash provided by operating activities	30,124	39,899
INVESTING ACTIVITIES
Purchase of property and equipment	(2,521)	(3,575)
Capitalization of internally developed software costs	(762)	(1,761)
Purchase of short-term investments	0	(869)
Purchase of business, net of cash acquired	(37,886)	(277)
Net cash used in investing activities	(41,169)	(6,482)
FINANCING ACTIVITIES
Proceeds from line of credit	223,500	153,000
Payments on line of credit	(190,500)	(181,000)
Payments for credit facility financing fees	(355)	(194)
Payment of contingent consideration for purchase of business	(3,258)	(2,144)
Proceeds from the sale of stock through the Employee Stock Purchase Plan	135	154
Purchases of treasury stock	(23,953)	0
Remittance of taxes withheld as part of a net share settlement of restricted stock vesting	(2,542)	(2,530)
Net cash provided by (used in) financing activities	3,027	(32,714)
Effect of exchange rate on cash and cash equivalents	353	(193)
Change in cash and cash equivalents	(7,665)	510
Cash and cash equivalents at beginning of period	10,113	8,811
Cash and cash equivalents at end of period	2,448	9,321
Supplemental disclosures:
Cash paid for income taxes	3,725	2,587
Cash paid for interest	922	1,211
Non-cash activity:
Stock issued for purchase of business (including settlement of contingent consideration)	9,429	96
Stock surrendered by sellers in conjunction with net working capital settlement	572	1,499
Liability incurred for purchase of property, plant and equipment	$ 0	$ 1,671

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Description of Business and Principles of Consolidation [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying interim unaudited condensed consolidated financial statements of Perficient, Inc. and its subsidiaries (collectively, the "Company") have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") and are presented in accordance with the rules and regulations of the Securities and Exchange Commission (the "SEC") applicable to interim financial information. Accordingly, certain note disclosures have been condensed or omitted. In the opinion of management, the interim unaudited condensed consolidated financial statements reflect all adjustments (consisting of only normal recurring adjustments) necessary for a fair presentation of the Company's financial position, results of operations and cash flows for the periods presented. These financial statements should be read in conjunction with the Company's consolidated financial statements and notes thereto filed with the SEC in the Company's Annual Report on Form 10-K for the year ended December 31, 2016. Operating results for the three and nine months ended September 30, 2017, respectively, may not be indicative of the results for the full fiscal year ending December 31, 2017.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with U.S. 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 revenues and expenses during the reporting periods. Actual results could differ from those estimates, and such differences could be material to the financial statements. Revenue Recognition Service revenues are primarily derived from professional services provided on a time and materials basis. For time and material contracts, service revenues are recognized and billed by multiplying the number of hours expended in the performance of the contract by the established billing rates. For fixed fee projects, service revenues are generally recognized using an input method based on the ratio of hours expended to total estimated hours. Amounts invoiced and collected in excess of revenues recognized are classified as deferred revenues. In conjunction with services provided, the Company occasionally receives referral fees under partner programs. These referral fees are recognized when earned and recorded within service revenues. Revenues from software and hardware sales are generally recorded on a gross basis considering the Company's role as a principal in the transaction. Revenues from sales of third-party software-as-a-service arrangements where the Company is not the primary obligor are recorded on a net basis. On many projects the Company is also reimbursed for out-of-pocket expenses including travel and other project-related expenses. These reimbursements are included as a component of revenues. The Company does not realize any profit on reimbursable expenses. Unbilled revenues represent the project time and expenses that have been incurred, but not yet billed to the client, prior to the end of the fiscal period. For time and materials projects, the client is invoiced for the amount of hours worked multiplied by the billing rates as stated in the contract. For fixed fee arrangements, the client is invoiced according to the agreed-upon schedule detailing the amount and timing of payments in the contract. Clients are typically billed monthly for services provided during that month, but can be billed on a more or less frequent basis as determined by the contract. If the time and expenses are worked/incurred and approved at the end of a fiscal period and the invoice has not yet been sent to the client, the amount is recorded as unbilled revenue once the Company verifies all other revenue recognition criteria have been met. Revenues are recognized when the following criteria are met: (1) persuasive evidence of the customer arrangement exists; (2) fees are fixed and determinable; (3) delivery and acceptance have occurred; and (4) collectability is reasonably assured. The Company's policy for revenue recognition in instances where multiple deliverables are sold contemporaneously to the same customer is in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Subtopic 985-605, Software – Revenue Recognition, Revenue Recognition – Multiple-Element Arrangements Revenue Recognition Further, delivery of software and hardware sales, when sold contemporaneously with services, can generally occur at varying times depending on the specific client project arrangement. Delivery of services generally occurs over a period of time consistent with the timeline as outlined in the client contract. There are no significant cancellation or termination-type provisions for the Company's software and hardware sales. Contracts for professional services provide for a general right, to the client or the Company, to cancel or terminate the contract within a given period of time (generally 10 to 30 days' notice is required). The client is responsible for any time and expenses incurred up to the date of cancellation or termination of the contract. The Company may provide multiple services under the terms of an arrangement and is required to assess whether one or more units of accounting are present. Service fees are typically accounted for as one unit of accounting. The Company follows the guidelines discussed above in determining revenues; however, certain judgments and estimates are made and used to determine revenues recognized in any fiscal period. If estimates are revised, material differences may result in the amount and timing of revenues recognized for a given period. Revenues are presented net of taxes assessed by governmental authorities. Sales taxes are generally collected and subsequently remitted on all software and hardware sales and certain services transactions as appropriate.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2017
Stock-Based Compensation [Abstract]
Stock-Based Compensation	3. Stock-Based Compensation The fair value of restricted stock awards is based on the value of the Company's common stock on the date of the grant. Stock-based compensation is accounted for in accordance with ASC Topic 718, Compensation – Stock Compensation Improvements to Employee Share-Based Payment Accounting Stock Award Plans The Company's Second Amended and Restated Perficient, Inc. 2012 Long Term Incentive Plan (as amended, the "Incentive Plan") allows for the granting of various types of stock awards to eligible individuals. The Compensation Committee of the Board of Directors administers the Incentive Plan and determines the terms of all stock awards made under the Incentive Plan. The Incentive Plan was increased by 2.0 million shares on June 14, 2017 after the Company's stockholders approved the increase at the Company's 2017 annual meeting of stockholders. Following the increase, the Company may issue stock awards of up to 7.0 million shares of Common Stock pursuant to the Incentive Plan. As of September 30, 2017, there were 3.3 million shares of Common Stock available for issuance under the Incentive Plan. Stock-based compensation cost recognized for the three and nine months ended September 30, 2017 was approximately $3.6 million and $11.0 million, respectively, which included $0.6 million and $1.9 million, respectively, of expense for retirement savings plan contributions. The associated current and future income tax benefits recognized were $1.1 million and $3.4 million for the three and nine months ended September 30, 2017, respectively. Stock-based compensation cost recognized for the three and nine months ended September 30, 2016 was approximately $3.2 million and $10.6 million, respectively, which included $0.6 and $1.9 million, respectively, of expense for retirement savings plan contributions. The associated current and future income tax benefits recognized were $1.2 million and $3.5 million for the three and nine months ended September 30, 2016, respectively. As of September 30, 2017, there was $15.0 million of total unrecognized compensation cost related to non-vested share-based awards. This cost is expected to be recognized over a weighted-average period of two years. Restricted stock activity for the nine months ended September 30, 2017 was as follows (shares in thousands): Shares Weighted-Average Grant Date Fair Value Restricted stock awards outstanding at December 31, 2016 1,403 $ 17.52 Awards granted 379 18.31 Awards vested (334 ) 19.78 Awards forfeited (119 ) 16.27 Restricted stock awards outstanding at September 30, 2017 1,329 $ 17.30

Net Income per Share

Net Income per Share	9 Months Ended
	Sep. 30, 2017
Net Income per Share [Abstract]
Net Income per Share	4. Net Income per Share The following table presents the calculation of basic and diluted net income per share (in thousands, except per share information): Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Net income $ 7,027 $ 5,545 $ 12,146 $ 16,766 Basic: Weighted-average shares of common stock outstanding 32,673 34,128 32,997 34,040 Shares used in computing basic net income per share 32,673 34,128 32,997 34,040 Effect of dilutive securities: Restricted stock subject to vesting 459 479 450 468 Contingently issuable shares (1) - - - 2 Shares issuable for acquisition consideration (2) 859 470 638 502 Shares used in computing diluted net income per share 33,991 35,077 34,085 35,012 Basic net income per share $ 0.22 $ 0.16 $ 0.37 $ 0.49 Diluted net income per share $ 0.21 $ 0.16 $ 0.36 $ 0.48 Anti-dilutive options and restricted stock not included in the calculation of diluted net income per share - - 117 - (1) For the nine months ended September 30, 2016, this represents the shares issued to Zeon Solutions Incorporated and certain related entities (collectively, "Zeon") pursuant to the Asset Purchase Agreement. (2) For the three and nine months ended September 30, 2017, this represents the shares held in escrow pursuant to: (i) the Asset Purchase Agreement with BioPharm Systems, Inc. ("BioPharm"); (ii) the Asset Purchase Agreement with Zeon; (iii) the Asset Purchase Agreement with The Pup Group, Inc. d/b/a Enlighten ("Enlighten"); (iv) the Asset Purchase Agreement with RAS & Associates, LLC ("RAS"); and (v) the Asset Purchase Agreement with Clarity Consulting, Inc. and Truth Labs, LLC. (together, "Clarity"), as part of the consideration. For the three and nine months ended September 30, 2016, this represents the shares held in escrow pursuant to: (i) the Asset Purchase Agreement with BioPharm; (ii) the Asset Purchase Agreement with Zeon; (iii) the Stock Purchase Agreement for Market Street Solutions, Inc. ("Market Street"); and (iv) the Asset Purchase Agreement with Enlighten, as part of the consideration.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies [Abstract]
Commitments and Contingencies	5. Commitments and Contingencies From time to time the Company is involved in legal proceedings, claims and litigation related to employee claims, contractual disputes and taxes in the ordinary course of business. Although the Company cannot predict the outcome of such matters, currently the Company has no reason to believe the disposition of any current matter could reasonably be expected to have a material adverse impact on the Company's financial position, results of operations or the ability to carry on any of its business activities. In June 2016, the Company entered into an agreement to purchase software licenses for internal use payable over a two-year period. As a result, the Company has recorded $0.8 million in "Other current liabilities" in the Condensed Consolidated Balance Sheet as of September 30, 2017 (unaudited). Certain of the Company's operating leases contain predetermined fixed escalations of minimum rentals during the original lease terms. For these leases, the Company recognizes the related rental expense on a straight-line basis over the life of the lease and records the difference between the amounts charged to operations and amounts paid as accrued rent expense. The Company leases office space and certain equipment under various operating lease agreements. The Company has the option to extend the term of certain lease agreements. Future minimum commitments under these lease agreements as of September 30, 2017 were as follows Operating Leases 2017 remaining $ 1,620 2018 6,350 2019 6,317 2020 5,971 2021 4,398 Thereafter 5,413 Total minimum lease payments $ 30,069 Rent expense for the three and nine months ended September 30, 2017 was $2.1 million and $6.0 million, respectively. Rent expense for the three and nine months ended September 30, 2016 was $1.8 million and $5.5 million, respectively.

Balance Sheet Components

Balance Sheet Components	9 Months Ended
	Sep. 30, 2017
Balance Sheet Components [Abstract]
Balance Sheet Components	6. Balance Sheet Components September 30, 2017 (unaudited) December 31, 2016 (in thousands) Accounts receivable: Accounts receivable $ 72,251 $ 80,461 Unbilled revenues 36,807 24,518 Allowance for doubtful accounts (968 ) (1,277 ) Total $ 108,090 $ 103,702 Property and equipment: Computer hardware (useful life of 3 years) $ 13,160 $ 12,191 Furniture and fixtures (useful life of 5 years) 3,548 3,306 Leasehold improvements (useful life of 5 years) 2,295 1,958 Software (useful life of 1 to 7 years) 5,159 9,186 Less: Accumulated depreciation (16,737 ) (17,753 ) Total $ 7,425 $ 8,888 Other current liabilities: Accrued variable compensation $ 9,159 $ 10,979 Deferred revenue 3,025 3,138 Payroll related costs 3,188 2,607 Accrued subcontractor fees 543 1,049 Accrued medical claims expense 1,924 1,859 Professional fees 332 420 Estimated fair value of contingent consideration liability (1) 4,168 3,384 Net working capital settlements - 62 Other current liabilities 5,713 4,139 Total $ 28,052 $ 27,637 Other non-current liabilities: Deferred compensation liability $ 4,173 $ 3,662 Deferred income taxes 12,860 12,853 Other non-current liabilities 1,996 2,543 Total $ 19,029 $ 19,058 (1) As of September 30, 2017, represents the fair value estimate of additional earnings-based contingent consideration that may be realized by Clarity twelve months after the acquisition. As of December 31, 2016, represents the fair value estimate of additional earnings-based contingent consideration that may be realized by the Market Street selling shareholders, Enlighten and Bluetube twelve months after the applicable acquisition.

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Business Combinations	7. Business Combinations 2016 Acquisition Acquisition of Bluetube On October 12, 2016, the Company acquired substantially all of the assets of Bluetube pursuant to the terms of an Asset Purchase Agreement. Bluetube was a digital marketing agency specializing in the development, implementation, integration and support of custom website and enterprise mobile solutions. The acquisition of Bluetube enhanced and expanded the Company's digital strategy, creative services, mobile and marketing expertise. The Company's total allocable purchase price consideration was $9.1 million. The purchase price was comprised of $7.2 million in cash paid increased by $1.9 million representing the initial fair value estimate of additional revenue and earnings-based contingent consideration. Bluetube realized the maximum cash payout pursuant to the Asset Purchase Agreement and, as a result, the Company recorded a pre-tax adjustment of $0.8 million in "Adjustment to fair value of contingent consideration" on the Unaudited Condensed Consolidated Statements of Operations during the nine months ended September 30, 2017 and paid $2.7 million in contingent consideration in August 2017. The Company incurred approximately $0.5 million in transaction costs, which were expensed when incurred. The Company allocated the total purchase price consideration between tangible assets, identified intangible assets, liabilities, and goodwill as follows (in millions): Acquired tangible assets $ 0.9 Acquired intangible assets 3.1 Liabilities assumed (0.6 ) Goodwill 5.7 Total purchase price $ 9.1 The amount of goodwill expected to be deductible for tax purposes is $6.7 million. The following table presents details of the intangible assets acquired during the year ended December 31, 2016 (dollars in millions): Weighted Average Useful Life Estimated Useful Life Aggregate Acquisitions Customer relationships 5 years 5 years $ 2.5 Customer backlog 6 months 6 months 0.4 Non-compete agreements 5 years 5 years 0.2 Trade name 1 year 1 year - Total acquired intangible assets $ 3.1 2017 Acquisition Acquisition of RAS On January 3, 2017, the Company acquired substantially all of the assets of RAS through a wholly-owned subsidiary of the Company, pursuant to the terms of an Asset Purchase Agreement. The acquisition of RAS expands the Company's expertise in management consulting offerings with additional strategy, operations and business process optimization. The Company's total allocable purchase price consideration was $10.4 million. The purchase price was comprised of $7.1 million in cash paid and $2.1 million in Company common stock issued at closing reduced by $0.6 million as a result of a net working capital adjustment settled in Company common stock surrendered by RAS in September 2017. The purchase price also included $1.8 million representing the initial fair value estimate of additional revenue and earnings-based contingent consideration, which may be realized by the seller twelve months after the closing date of the acquisition with a maximum cash payout of $3.8 million. As of September 30, 2017, the Company's best estimate of the fair value of the contingent consideration is zero. As a result, the Company recorded a pre-tax adjustment in "Adjustment to fair value of contingent consideration" on the Unaudited Condensed Consolidated Statements of Operations of $0.5 and $1.8 million during the three and nine months ended September 30, 2017. The Company incurred approximately $0.5 million in transaction costs, which were expensed when incurred. The Company allocated the total purchase price consideration between tangible assets, identified intangible assets, liabilities, and goodwill as follows (in millions): Acquired tangible assets $ 0.9 Acquired intangible assets 5.1 Liabilities assumed (1.0 ) Goodwill 5.4 Total purchase price $ 10.4 The amount of goodwill expected to be deductible for tax purposes, excluding contingent consideration, is $3.7 million. Acquisition of Clarity On June 22, 2017, the Company acquired substantially all of the assets of Clarity, pursuant to the terms of an Asset Purchase Agreement. The acquisition of Clarity builds the Company's Microsoft offerings and qualifications and increases the Company's presence in the North Central region and, specifically, the Chicago market. The Company has initially estimated the total allocable purchase price consideration to be $41.6 million. The purchase price was comprised of $30.7 million in cash paid and $7.3 million in Company common stock issued at closing reduced by $0.5 million for an estimated net working settlement due from the seller. The purchase price also included $4.1 million representing the initial fair value estimate of additional revenue and earnings-based contingent consideration, which may be realized by the seller twelve months after the closing date of the acquisition with a maximum cash payout of $9.2 million. The Company incurred approximately $0.9 million in transaction costs, which were expensed when incurred. As part of the consideration transferred for the acquisition of Clarity, the Company issued common stock to owners of Clarity who are continuing with the Company with restrictions that limit the ability to sell the common stock and that lapse over a certain period, or over an accelerated period upon meeting specified employment milestones. As such, an estimated $0.9 million of the common stock value was attributed to future compensation and recorded as an asset within "Other current assets" and "Other non-current assets" in the Condensed Consolidated Balance Sheet as of September 30, 2017 (unaudited), to be amortized over the requisite service period. The Company has estimated the allocation of the total purchase price consideration between tangible assets, identified intangible assets, liabilities, and goodwill as follows (in millions): Acquired tangible assets $ 6.3 Acquired intangible assets 15.4 Liabilities assumed (3.9 ) Goodwill 23.8 Total purchase price $ 41.6 The amount of goodwill expected to be deductible for tax purposes, excluding contingent consideration, is $21.3 million. The above purchase accounting estimates are pending finalization of the intangible assets and contingent consideration valuation and a net working capital settlement that is subject to final adjustment as the Company obtains additional information during the measurement period. The following table presents details of the intangible assets acquired during the nine months ended September 30, 2017 (dollars in millions): Weighted Average Useful Life Estimated Useful Life Aggregate Acquisitions Customer relationships 6 years 6 years $ 17.3 Customer backlog 1 year 3 months - 1 year 1.8 Non-compete agreements 5 years 2 - 5 years 0.7 Trade name 1 year 1 year 0.1 Internally developed software 4 years 4 years 0.6 Total acquired intangible assets $ 20.5 The results of the 2016 and 2017 acquisitions' operations have been included in the Company's interim unaudited condensed consolidated financial statements since the respective acquisition date. The aggregate amounts of revenue and net income of the RAS and Clarity acquisitions in the Unaudited Condensed Consolidated Statements of Operations from the acquisition date to September 30, 2017 are as follows (in thousands): Acquisition Date to September 30, 2017 Revenues $ 15,799 Net income $ 1,276 Pro-forma Results of Operations The following presents the unaudited pro-forma combined results of operations of the Company with the 2017 acquisitions for the nine months ended September 30, 2017 and the 2016 and 2017 acquisitions for the nine months ended September 30, 2016, after giving effect to certain pro-forma adjustments and assuming the 2017 acquisitions were acquired as of the beginning of 2016 and assuming the 2016 acquisition was acquired as of the beginning of 2015. These unaudited pro-forma results are presented in compliance with the adoption of ASU No. 2010-29, Business Combinations (Topic 805): Disclosure of Supplementary Pro Forma Information for Business Combinations are not necessarily indicative of the actual consolidated results of operations had the acquisitions actually occurred on January 1, 2016 or January 1, 2015 or of future results of operations of the consolidated entities (in thousands except per share data): Nine Months Ended September 30, 2017 2016 Revenues $ 366,958 $ 396,907 Net income $ 14,716 $ 17,365 Basic net income per share $ 0.44 $ 0.51 Diluted net income per share $ 0.43 $ 0.49 Shares used in computing basic net income per share 33,466 34,288 Shares used in computing diluted net income per share 34,395 35,696

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets [Abstract]
Goodwill and Intangible Assets	8. Goodwill and Intangible Assets Goodwill represents the excess purchase price over the fair value of net assets acquired, or net liabilities assumed, in a business combination. In accordance with ASC Topic 350, Intangibles – Goodwill and Other Other intangible assets include customer relationships, non-compete arrangements, trade names, customer backlog, and internally developed software, which are being amortized over the assets' estimated useful lives using the straight-line method. Estimated useful lives range from less than one year to ten years. Amortization of customer relationships, non-compete arrangements, trade names, customer backlog, and internally developed software is considered an operating expense and is included in "Amortization" in the accompanying Unaudited Condensed Consolidated Statements of Operations. The Company periodically reviews the estimated useful lives of its identifiable intangible assets, taking into consideration any events or circumstances that might result in a lack of recoverability or revised useful life. Goodwill The changes in the carrying amount of goodwill for the nine months ended September 30, 2017 are as follows (in thousands): Balance at December 31, 2016 $ 275,205 Preliminary purchase price allocations for acquisitions 29,191 Effect of foreign currency translation adjustments 187 Balance at September 30, 2017 $ 304,583 Intangible Assets with Definite Lives The following table presents a summary of the Company's intangible assets that are subject to amortization (in thousands): September 30, 2017 December 31, 2016 Gross Carrying Amounts Accumulated Amortization Net Carrying Amounts Gross Carrying Amounts Accumulated Amortization Net Carrying Amounts Customer relationships $ 75,857 $ (29,475 ) $ 46,382 $ 67,648 $ (30,458 ) $ 37,190 Non-compete agreements 1,586 (628 ) 958 1,018 (557 ) 461 Customer backlog 1,640 (451 ) 1,189 390 (195 ) 195 Trade name 140 (53 ) 87 30 (7 ) 23 Internally developed software 11,463 (4,797 ) 6,666 11,342 (4,096 ) 7,246 Total $ 90,686 $ (35,404 ) $ 55,282 $ 80,428 $ (35,313 ) $ 45,115 The estimated useful lives of identifiable intangible assets are as follows: Customer relationships 5 – 10 years Non-compete agreements 2 – 5 years Customer backlog 6 months – 1 year Trade name 1 year Internally developed software 1 – 7 years Estimated annual amortization expense for the next five years ended December 31 and thereafter is as follows 2017 remaining $ 4,030 2018 $ 14,226 2019 $ 12,362 2020 $ 9,279 2021 $ 7,217 Thereafter $ 8,168

Line of Credit

Line of Credit	9 Months Ended
	Sep. 30, 2017
Line of Credit [Abstract]
Line of Credit	9. Line of Credit On June 9, 2017, the Company entered into a he Credit Agreement provides for revolving credit borrowings up to a maximum principal amount of $125.0 million, subject to a commitment increase of $75.0 million. The Credit Agreement also allows for the issuance of letters of credit in the aggregate amount of up to $10.0 million at any one time; outstanding letters of credit reduce the credit available for revolving credit borrowings. As of September 30, 2017, the Company had no outstanding letters of credit. Substantially all of the Company's assets are pledged to secure the credit facility. Borrowings under the Credit Agreement bear interest at the Company's option of the prime rate (4.25% on September 30, 2017) plus a margin ranging from 0.00% to 0.50% or one-month LIBOR (1.23% on September 30, 2017) plus a margin ranging from to 1.75%. The Company incurs an annual commitment fee of 0.15% to 0.20% on the unused portion of the line of credit. The additional margin amount and annual commitment fee are dependent on the level of outstanding borrowings. As of September 30, 2017, the Company had $60.0 million of unused borrowing capacity. The Company is required to comply with various financial covenants under the Credit Agreement. Specifically, the Company is required to maintain a ratio of earnings before interest, taxes, depreciation, and amortization ("EBITDA") plus stock compensation to interest expense for the previous four consecutive fiscal quarters of not less than 3.00 to 1.00 and a ratio of indebtedness to EBITDA plus stock compensation ("Leverage Ratio") of not more than 3.00 to 1.00. Additionally, the Credit Agreement currently restricts the payment of dividends that would result in a pro forma Leverage Ratio of more than 2.00 to 1.00. At September 30, 2017, the Company was in compliance with all covenants under the Credit Agreement.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Taxes [Abstract]
Income Taxes	10. Income Taxes The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. The Internal Revenue Service (the "IRS") has completed examinations of the Company's U.S. income tax returns or the statute of limitations has passed on returns for the years through 2010. The Company's 2011 through 2015 U.S. income tax returns are currently under examination by the IRS. The IRS has sought to disallow research credits in the total amount of $2.5 million on the Company's 2011, 2012 and 2013 U.S. income tax returns. The Company has exhausted all administrative appeals and formal mediation and has filed suit to resolve this dispute. The Company is awaiting a court date to be set by the U.S. Tax Court. The Company believes the research credits taken are appropriate and intends to vigorously defend its position. The amount of adjustment, if any, and the timing of such adjustment are not reasonably possible to estimate at this time. The total amount of research credits taken or expected to be taken in the Company's income tax returns for 2011 through September 30, 2017 is $8.4 million. As of September 30, 2017, the Company's net non-current deferred tax liability was $12.9 million. Deferred tax liabilities primarily relate to goodwill, intangibles, fixed asset depreciation, and prepaid expenses. Net non-current deferred tax liabilities are recorded in "Other non-current liabilities" on the Condensed Consolidated Balance Sheets as of September 30, 2017 (unaudited) and December 31, 2016. Under the provisions of the ASC Subtopic 740-10-25, Income Taxes - Recognition The Company's effective tax rate was 33.3% and 46.4% for the three and nine months ended September 30, 2017, respectively, compared to 26.9% and 31.0% for the three and nine months ended September 30, 2016, respectively. The increase in the effective rate is primarily due to the Company's determination that the foreign earnings of the Company's Chinese subsidiary were no longer permanently reinvested. In general, it is the Company's practice and intention to reinvest the earnings of the Company's foreign subsidiaries in those operations. However, during the second quarter of 2017, the Company determined that as a result of changes in the business and macroeconomic environment, the foreign earnings of the Company's Chinese subsidiary were no longer permanently reinvested, and the Company repatriated $4.8 million in June 2017 and an additional $4.8 million in July 2017. A provision for the expected current and deferred taxes on repatriation of these earnings was recorded in the amount of $2.5 million during the second quarter of 2017. Management intends to continue to permanently reinvest all other remaining current and prior earnings in its other foreign subsidiaries. Excluding China, foreign unremitted earnings of entities not included in the United States tax return have been included in the consolidated financial statements without giving effect to the United States taxes that may be payable on distribution to the United States because it is not anticipated such earnings will be remitted to the United States. Under current applicable tax laws, if the Company elects to remit some or all of the funds it has designated as indefinitely reinvested outside the United States, the amount remitted would be subject to United States income taxes and applicable non-U.S. income and withholding taxes. Such earnings would also become taxable upon the sale or liquidation of these subsidiaries or upon remittance of dividends. As of September 30, 2017, the aggregate unremitted earnings of the Company's foreign subsidiaries for which a deferred income tax liability has not been recorded was approximately $0.7 million, and the unrecognized deferred tax liability on unremitted earnings was approximately $0.1 million.

Financial Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2017
Financial Instruments [Abstract]
Financial Instruments	11. Financial Instruments In the normal course of business, the Company uses derivative financial instruments to manage foreign currency exchange rate risk. Currency exposure is monitored and managed by the Company as part of its risk management program which seeks to reduce the potentially adverse effects that market volatility could have on operating results. The Company's derivative financial instruments consist of non-deliverable foreign currency forward contracts. Derivative financial instruments are neither held nor issued by the Company for trading purposes. Derivatives Not Designated as Hedging Instruments Both the gain or loss on the derivatives not designated as hedging instruments and the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings. Realized gains or losses and changes in the estimated fair value of foreign currency forward contracts that have not been designated as hedges were an immaterial net gain during the three months ended September 30, 2017 and a $0.1 million net gain for the nine months ended September 30, 2017. A net loss of $0.1 million and $0.2 million was recognized during the three and nine months ended September 30, 2016, respectively. Gains and losses on these contracts are recorded in net other expense (income) and net interest expense in the Unaudited Condensed Consolidated Statements of Operations and are offset by losses and gains on the related hedged items. The notional amounts of the Company's derivative instruments outstanding were as follows (in thousands): September 30, 2017 December 31, 2016 Derivatives not designated as hedges Foreign exchange contracts $ 5,169 $ 4,541 Total derivatives not designated as hedges $ 5,169 $ 4,541

Recent Accounting Pronoucements

Recent Accounting Pronoucements	9 Months Ended
	Sep. 30, 2017
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	12. Recent Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers Principal versus Agent Considerations Identifying Performance Obligations and Licensing Narrow-Scope Improvements and Practical Expedients Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers In February 2016, the FASB issued ASU No. 2016-02, Leases Leases, Leases Commitments and Contingencies In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment.

Summary of Significant Accoun20

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Summary of Significant Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. 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 revenues and expenses during the reporting periods. Actual results could differ from those estimates, and such differences could be material to the financial statements.
Revenue Recognition	Revenue Recognition Service revenues are primarily derived from professional services provided on a time and materials basis. For time and material contracts, service revenues are recognized and billed by multiplying the number of hours expended in the performance of the contract by the established billing rates. For fixed fee projects, service revenues are generally recognized using an input method based on the ratio of hours expended to total estimated hours. Amounts invoiced and collected in excess of revenues recognized are classified as deferred revenues. In conjunction with services provided, the Company occasionally receives referral fees under partner programs. These referral fees are recognized when earned and recorded within service revenues. Revenues from software and hardware sales are generally recorded on a gross basis considering the Company's role as a principal in the transaction. Revenues from sales of third-party software-as-a-service arrangements where the Company is not the primary obligor are recorded on a net basis. On many projects the Company is also reimbursed for out-of-pocket expenses including travel and other project-related expenses. These reimbursements are included as a component of revenues. The Company does not realize any profit on reimbursable expenses. Unbilled revenues represent the project time and expenses that have been incurred, but not yet billed to the client, prior to the end of the fiscal period. For time and materials projects, the client is invoiced for the amount of hours worked multiplied by the billing rates as stated in the contract. For fixed fee arrangements, the client is invoiced according to the agreed-upon schedule detailing the amount and timing of payments in the contract. Clients are typically billed monthly for services provided during that month, but can be billed on a more or less frequent basis as determined by the contract. If the time and expenses are worked/incurred and approved at the end of a fiscal period and the invoice has not yet been sent to the client, the amount is recorded as unbilled revenue once the Company verifies all other revenue recognition criteria have been met. Revenues are recognized when the following criteria are met: (1) persuasive evidence of the customer arrangement exists; (2) fees are fixed and determinable; (3) delivery and acceptance have occurred; and (4) collectability is reasonably assured. The Company's policy for revenue recognition in instances where multiple deliverables are sold contemporaneously to the same customer is in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Subtopic 985-605, Software – Revenue Recognition, Revenue Recognition – Multiple-Element Arrangements Revenue Recognition Further, delivery of software and hardware sales, when sold contemporaneously with services, can generally occur at varying times depending on the specific client project arrangement. Delivery of services generally occurs over a period of time consistent with the timeline as outlined in the client contract. There are no significant cancellation or termination-type provisions for the Company's software and hardware sales. Contracts for professional services provide for a general right, to the client or the Company, to cancel or terminate the contract within a given period of time (generally 10 to 30 days' notice is required). The client is responsible for any time and expenses incurred up to the date of cancellation or termination of the contract. The Company may provide multiple services under the terms of an arrangement and is required to assess whether one or more units of accounting are present. Service fees are typically accounted for as one unit of accounting. The Company follows the guidelines discussed above in determining revenues; however, certain judgments and estimates are made and used to determine revenues recognized in any fiscal period. If estimates are revised, material differences may result in the amount and timing of revenues recognized for a given period. Revenues are presented net of taxes assessed by governmental authorities. Sales taxes are generally collected and subsequently remitted on all software and hardware sales and certain services transactions as appropriate.

Stock-Based Compensation (Polic

Stock-Based Compensation (Policies)	9 Months Ended
	Sep. 30, 2017
Stock-Based Compensation [Abstract]
Stock-Based Compensation	The fair value of restricted stock awards is based on the value of the Company's common stock on the date of the grant. Stock-based compensation is accounted for in accordance with ASC Topic 718, Compensation – Stock Compensation Improvements to Employee Share-Based Payment Accounting

Commitments and Contingencies (

Commitments and Contingencies (Policies)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies [Abstract]
Legal Claims	From time to time the Company is involved in legal proceedings, claims and litigation related to employee claims, contractual disputes and taxes in the ordinary course of business. Although the Company cannot predict the outcome of such matters, currently the Company has no reason to believe the disposition of any current matter could reasonably be expected to have a material adverse impact on the Company's financial position, results of operations or the ability to carry on any of its business activities.
Operating Leases	Certain of the Company's operating leases contain predetermined fixed escalations of minimum rentals during the original lease terms. For these leases, the Company recognizes the related rental expense on a straight-line basis over the life of the lease and records the difference between the amounts charged to operations and amounts paid as accrued rent expense.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Policies)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets [Abstract]
Goodwill and Intangible Assets	Goodwill represents the excess purchase price over the fair value of net assets acquired, or net liabilities assumed, in a business combination. In accordance with ASC Topic 350, Intangibles – Goodwill and Other Other intangible assets include customer relationships, non-compete arrangements, trade names, customer backlog, and internally developed software, which are being amortized over the assets' estimated useful lives using the straight-line method. Estimated useful lives range from less than one year to ten years. Amortization of customer relationships, non-compete arrangements, trade names, customer backlog, and internally developed software is considered an operating expense and is included in "Amortization" in the accompanying Unaudited Condensed Consolidated Statements of Operations. The Company periodically reviews the estimated useful lives of its identifiable intangible assets, taking into consideration any events or circumstances that might result in a lack of recoverability or revised useful life.

Financial Instruments (Policies

Financial Instruments (Policies)	9 Months Ended
	Sep. 30, 2017
Financial Instruments [Abstract]
Financial Instruments	Derivatives Not Designated as Hedging Instruments Both the gain or loss on the derivatives not designated as hedging instruments and the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings. Realized gains or losses and changes in the estimated fair value of foreign currency forward contracts that have not been designated as hedges were an immaterial net gain during the three months ended September 30, 2017 and a $0.1 million net gain for the nine months ended September 30, 2017. A net loss of $0.1 million and $0.2 million was recognized during the three and nine months ended September 30, 2016, respectively. Gains and losses on these contracts are recorded in net other expense (income) and net interest expense in the Unaudited Condensed Consolidated Statements of Operations and are offset by losses and gains on the related hedged items.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Stock-Based Compensation [Abstract]
Restricted Stock Activity	Restricted stock activity for the nine months ended September 30, 2017 was as follows (shares in thousands): Shares Weighted-Average Grant Date Fair Value Restricted stock awards outstanding at December 31, 2016 1,403 $ 17.52 Awards granted 379 18.31 Awards vested (334 ) 19.78 Awards forfeited (119 ) 16.27 Restricted stock awards outstanding at September 30, 2017 1,329 $ 17.30

Net Income per Share (Tables)

Net Income per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Net Income per Share [Abstract]
Basic and Diluted Net Income per Share	The following table presents the calculation of basic and diluted net income per share (in thousands, except per share information): Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Net income $ 7,027 $ 5,545 $ 12,146 $ 16,766 Basic: Weighted-average shares of common stock outstanding 32,673 34,128 32,997 34,040 Shares used in computing basic net income per share 32,673 34,128 32,997 34,040 Effect of dilutive securities: Restricted stock subject to vesting 459 479 450 468 Contingently issuable shares (1) - - - 2 Shares issuable for acquisition consideration (2) 859 470 638 502 Shares used in computing diluted net income per share 33,991 35,077 34,085 35,012 Basic net income per share $ 0.22 $ 0.16 $ 0.37 $ 0.49 Diluted net income per share $ 0.21 $ 0.16 $ 0.36 $ 0.48 Anti-dilutive options and restricted stock not included in the calculation of diluted net income per share - - 117 - (1) For the nine months ended September 30, 2016, this represents the shares issued to Zeon Solutions Incorporated and certain related entities (collectively, "Zeon") pursuant to the Asset Purchase Agreement. (2) For the three and nine months ended September 30, 2017, this represents the shares held in escrow pursuant to: (i) the Asset Purchase Agreement with BioPharm Systems, Inc. ("BioPharm"); (ii) the Asset Purchase Agreement with Zeon; (iii) the Asset Purchase Agreement with The Pup Group, Inc. d/b/a Enlighten ("Enlighten"); (iv) the Asset Purchase Agreement with RAS & Associates, LLC ("RAS"); and (v) the Asset Purchase Agreement with Clarity Consulting, Inc. and Truth Labs, LLC. (together, "Clarity"), as part of the consideration. For the three and nine months ended September 30, 2016, this represents the shares held in escrow pursuant to: (i) the Asset Purchase Agreement with BioPharm; (ii) the Asset Purchase Agreement with Zeon; (iii) the Stock Purchase Agreement for Market Street Solutions, Inc. ("Market Street"); and (iv) the Asset Purchase Agreement with Enlighten, as part of the consideration.

Commitments and Contingencies27

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies [Abstract]
Future Minimum Commitments Under Operating Lease Agreements	The Company leases office space and certain equipment under various operating lease agreements. The Company has the option to extend the term of certain lease agreements. Future minimum commitments under these lease agreements as of September 30, 2017 were as follows Operating Leases 2017 remaining $ 1,620 2018 6,350 2019 6,317 2020 5,971 2021 4,398 Thereafter 5,413 Total minimum lease payments $ 30,069

Balance Sheet Components (Table

Balance Sheet Components (Tables)	9 Months Ended
	Sep. 30, 2017
Balance Sheet Components [Abstract]
Accounts Receivable	September 30, 2017 (unaudited) December 31, 2016 (in thousands) Accounts receivable: Accounts receivable $ 72,251 $ 80,461 Unbilled revenues 36,807 24,518 Allowance for doubtful accounts (968 ) (1,277 ) Total $ 108,090 $ 103,702
Property and Equipment	Property and equipment: Computer hardware (useful life of 3 years) $ 13,160 $ 12,191 Furniture and fixtures (useful life of 5 years) 3,548 3,306 Leasehold improvements (useful life of 5 years) 2,295 1,958 Software (useful life of 1 to 7 years) 5,159 9,186 Less: Accumulated depreciation (16,737 ) (17,753 ) Total $ 7,425 $ 8,888
Other Current Liabilities	Other current liabilities: Accrued variable compensation $ 9,159 $ 10,979 Deferred revenue 3,025 3,138 Payroll related costs 3,188 2,607 Accrued subcontractor fees 543 1,049 Accrued medical claims expense 1,924 1,859 Professional fees 332 420 Estimated fair value of contingent consideration liability (1) 4,168 3,384 Net working capital settlements - 62 Other current liabilities 5,713 4,139 Total $ 28,052 $ 27,637
Other Non-Current Liabilities	Other non-current liabilities: Deferred compensation liability $ 4,173 $ 3,662 Deferred income taxes 12,860 12,853 Other non-current liabilities 1,996 2,543 Total $ 19,029 $ 19,058 (1) As of September 30, 2017, represents the fair value estimate of additional earnings-based contingent consideration that may be realized by Clarity twelve months after the acquisition. As of December 31, 2016, represents the fair value estimate of additional earnings-based contingent consideration that may be realized by the Market Street selling shareholders, Enlighten and Bluetube twelve months after the applicable acquisition.

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Intangible Assets Acquired	The following table presents details of the intangible assets acquired during the year ended December 31, 2016 (dollars in millions): Weighted Average Useful Life Estimated Useful Life Aggregate Acquisitions Customer relationships 5 years 5 years $ 2.5 Customer backlog 6 months 6 months 0.4 Non-compete agreements 5 years 5 years 0.2 Trade name 1 year 1 year - Total acquired intangible assets $ 3.1 The following table presents details of the intangible assets acquired during the nine months ended September 30, 2017 (dollars in millions): Weighted Average Useful Life Estimated Useful Life Aggregate Acquisitions Customer relationships 6 years 6 years $ 17.3 Customer backlog 1 year 3 months - 1 year 1.8 Non-compete agreements 5 years 2 - 5 years 0.7 Trade name 1 year 1 year 0.1 Internally developed software 4 years 4 years 0.6 Total acquired intangible assets $ 20.5
Acquisitions Included in Results of Operations	The aggregate amounts of revenue and net income of the RAS and Clarity acquisitions in the Unaudited Condensed Consolidated Statements of Operations from the acquisition date to September 30, 2017 are as follows (in thousands): Acquisition Date to September 30, 2017 Revenues $ 15,799 Net income $ 1,276
Pro-Forma Results of Operations	These unaudited pro-forma results are presented in compliance with the adoption of ASU No. 2010-29, Business Combinations (Topic 805): Disclosure of Supplementary Pro Forma Information for Business Combinations are not necessarily indicative of the actual consolidated results of operations had the acquisitions actually occurred on January 1, 2016 or January 1, 2015 or of future results of operations of the consolidated entities (in thousands except per share data): Nine Months Ended September 30, 2017 2016 Revenues $ 366,958 $ 396,907 Net income $ 14,716 $ 17,365 Basic net income per share $ 0.44 $ 0.51 Diluted net income per share $ 0.43 $ 0.49 Shares used in computing basic net income per share 33,466 34,288 Shares used in computing diluted net income per share 34,395 35,696
BlueTube [Member]
Business Combinations [Abstract]
Allocation of Total Purchase Price Consideration	The Company allocated the total purchase price consideration between tangible assets, identified intangible assets, liabilities, and goodwill as follows (in millions): Acquired tangible assets $ 0.9 Acquired intangible assets 3.1 Liabilities assumed (0.6 ) Goodwill 5.7 Total purchase price $ 9.1
RAS [Member]
Business Combinations [Abstract]
Allocation of Total Purchase Price Consideration	The Company allocated the total purchase price consideration between tangible assets, identified intangible assets, liabilities, and goodwill as follows (in millions): Acquired tangible assets $ 0.9 Acquired intangible assets 5.1 Liabilities assumed (1.0 ) Goodwill 5.4 Total purchase price $ 10.4
Clarity Consultants [Member]
Business Combinations [Abstract]
Allocation of Total Purchase Price Consideration	The Company has estimated the allocation of the total purchase price consideration between tangible assets, identified intangible assets, liabilities, and goodwill as follows (in millions): Acquired tangible assets $ 6.3 Acquired intangible assets 15.4 Liabilities assumed (3.9 ) Goodwill 23.8 Total purchase price $ 41.6

Goodwill and Intangible Asset30

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets [Abstract]
Goodwill	The changes in the carrying amount of goodwill for the nine months ended September 30, 2017 are as follows (in thousands): Balance at December 31, 2016 $ 275,205 Preliminary purchase price allocations for acquisitions 29,191 Effect of foreign currency translation adjustments 187 Balance at September 30, 2017 $ 304,583
Intangible Assets	The following table presents a summary of the Company's intangible assets that are subject to amortization (in thousands): September 30, 2017 December 31, 2016 Gross Carrying Amounts Accumulated Amortization Net Carrying Amounts Gross Carrying Amounts Accumulated Amortization Net Carrying Amounts Customer relationships $ 75,857 $ (29,475 ) $ 46,382 $ 67,648 $ (30,458 ) $ 37,190 Non-compete agreements 1,586 (628 ) 958 1,018 (557 ) 461 Customer backlog 1,640 (451 ) 1,189 390 (195 ) 195 Trade name 140 (53 ) 87 30 (7 ) 23 Internally developed software 11,463 (4,797 ) 6,666 11,342 (4,096 ) 7,246 Total $ 90,686 $ (35,404 ) $ 55,282 $ 80,428 $ (35,313 ) $ 45,115
Estimated Useful Lives of Intangible Assets	The estimated useful lives of identifiable intangible assets are as follows: Customer relationships 5 – 10 years Non-compete agreements 2 – 5 years Customer backlog 6 months – 1 year Trade name 1 year Internally developed software 1 – 7 years
Estimated Annual Amortization Expense	Estimated annual amortization expense for the next five years ended December 31 and thereafter is as follows 2017 remaining $ 4,030 2018 $ 14,226 2019 $ 12,362 2020 $ 9,279 2021 $ 7,217 Thereafter $ 8,168

Financial Instruments (Tables)

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Financial Instruments [Abstract]
Notional Amounts of Derivative Instruments Outstanding	The notional amounts of the Company's derivative instruments outstanding were as follows (in thousands): September 30, 2017 December 31, 2016 Derivatives not designated as hedges Foreign exchange contracts $ 5,169 $ 4,541 Total derivatives not designated as hedges $ 5,169 $ 4,541

Summary of Significant Accoun32

Summary of Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2017
Minimum [Member]
Revenue Recognition [Abstract]
Period of cancellation notice	10 days
Maximum [Member]
Revenue Recognition [Abstract]
Period of cancellation notice	30 days

Stock-Based Compensation, Stock

Stock-Based Compensation, Stock Award Plans (Details) - USD ($) shares in Millions, $ in Millions	Jun. 14, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stock-Based Compensation [Abstract]
Stock-based compensation expense		$ 3.6	$ 3.2	$ 11	$ 10.6
Stock-based compensation expense for retirement savings plan contributions		0.6	0.6	1.9	1.9
Associated current and future income tax benefits recognized		1.1	$ 1.2	3.4	$ 3.5
Total unrecognized compensation cost related to non-vested share-based awards		$ 15		$ 15
Unrecognized compensation cost, weighted-average period for recognition				2 years
Requisite service period				3 years
2012 Long Term Incentive Plan [Member]
Stock-Based Compensation [Abstract]
Additional shares authorized under plan (in shares)	2
Maximum number of shares authorized under plan (in shares)		7		7
Number of shares available for issuance (in shares)		3.3		3.3

Stock-Based Compensation, Restr

Stock-Based Compensation, Restricted Stock Activity (Details) - 2012 Long Term Incentive Plan [Member] - Restricted Stock [Member] shares in Thousands	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Shares [Roll Forward]
Awards outstanding at beginning of period (in shares) | shares	1,403
Awards granted (in shares) | shares	379
Awards vested (in shares) | shares	(334)
Awards forfeited (in shares) | shares	(119)
Awards outstanding at end of period | shares	1,329
Weighted-Average Grant Date Fair Value [Abstract]
Awards outstanding at beginning of period (in dollars per share) | $ / shares	$ 17.52
Awards granted (in dollars per share) | $ / shares	18.31
Awards vested (in dollars per share) | $ / shares	19.78
Awards forfeited (in dollars per share) | $ / shares	16.27
Awards outstanding at end of period (in dollars per share) | $ / shares	$ 17.30

Net Income per Share (Details)

Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Income per Share [Abstract]
Net income		$ 7,027	$ 5,545	$ 12,146	$ 16,766
Basic [Abstract]
Weighted-average shares of common stock outstanding		32,673	34,128	32,997	34,040
Shares used in computing basic net income per share (in shares)		32,673	34,128	32,997	34,040
Effect of dilutive securities:
Restricted stock subject to vesting (in shares)		459	479	450	468
Contingently issuable shares (in shares)		0	0	0	2	[1]
Shares issuable for acquisition consideration (in shares)	[2]	859	470	638	502
Shares used in computing diluted net income per share (in shares)		33,991	35,077	34,085	35,012
Basic net income per share (in dollars per share)		$ 0.22	$ 0.16	$ 0.37	$ 0.49
Diluted net income per share (in dollars per share)		$ 0.21	$ 0.16	$ 0.36	$ 0.48
Anti-dilutive options and restricted stock not included in the calculation of diluted net income per share (in shares)		0	0	117	0
[1]	For the nine months ended September 30, 2016, this represents the shares issued to Zeon Solutions Incorporated and certain related entities (collectively, "Zeon") pursuant to the Asset Purchase Agreement.
[2]	For the three and nine months ended September 30, 2017, this represents the shares held in escrow pursuant to: (i) the Asset Purchase Agreement with BioPharm Systems, Inc. ("BioPharm"); (ii) the Asset Purchase Agreement with Zeon; (iii) the Asset Purchase Agreement with The Pup Group, Inc. d/b/a Enlighten ("Enlighten"); (iv) the Asset Purchase Agreement with RAS & Associates, LLC ("RAS"); and (v) the Asset Purchase Agreement with Clarity Consulting, Inc. and Truth Labs, LLC. (together, "Clarity"), as part of the consideration. For the three and nine months ended September 30, 2016, this represents the shares held in escrow pursuant to: (i) the Asset Purchase Agreement with BioPharm; (ii) the Asset Purchase Agreement with Zeon; (iii) the Stock Purchase Agreement for Market Street Solutions, Inc. ("Market Street"); and (iv) the Asset Purchase Agreement with Enlighten, as part of the consideration.

Commitments and Contingencies36

Commitments and Contingencies (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Commitments [Abstract]
Other current liabilities		$ 28,052		$ 28,052		$ 27,637
Other non-current liabilities		19,029		19,029		$ 19,058
Future Minimum Commitments Under Operating Lease Agreements [Abstract]
2017 remaining		1,620		1,620
2,018		6,350		6,350
2,019		6,317		6,317
2,020		5,971		5,971
2,021		4,398		4,398
Thereafter		5,413		5,413
Total minimum lease payments		30,069		30,069
Rent expense		2,100	$ 1,800	6,000	$ 5,500
Software Licenses [Member]
Commitments [Abstract]
Period to purchase software licenses	2 years
Other current liabilities		$ 800		$ 800

Balance Sheet Components, Accou

Balance Sheet Components, Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Balance Sheet Components [Abstract]
Accounts receivable	$ 72,251	$ 80,461
Unbilled revenues	36,807	24,518
Allowance for doubtful accounts	(968)	(1,277)
Total	$ 108,090	$ 103,702

Balance Sheet Components, Prope

Balance Sheet Components, Property and Equipment) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Property and Equipment [Abstract]
Less: Accumulated depreciation	$ (16,737)	$ (17,753)
Total	7,425	8,888
Computer Hardware [Member]
Property and Equipment [Abstract]
Property and equipment	$ 13,160	12,191
Useful life	3 years
Furniture And Fixtures [Member]
Property and Equipment [Abstract]
Property and equipment	$ 3,548	3,306
Useful life	5 years
Leasehold Improvements [Member]
Property and Equipment [Abstract]
Property and equipment	$ 2,295	1,958
Useful life	5 years
Software [Member]
Property and Equipment [Abstract]
Property and equipment	$ 5,159	$ 9,186
Minimum [Member] | Software [Member]
Property and Equipment [Abstract]
Useful life	1 year
Maximum [Member] | Software [Member]
Property and Equipment [Abstract]
Useful life	7 years

Balance Sheet Components, Other

Balance Sheet Components, Other Current Liabilities (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Balance Sheet Components [Abstract]
Accrued variable compensation		$ 9,159	$ 10,979
Deferred revenues		3,025	3,138
Payroll related costs		3,188	2,607
Accrued subcontractor fees		543	1,049
Accrued medical claims expense		1,924	1,859
Professional Fees		332	420
Estimated fair value of contingent consideration liability	[1]	4,168	3,384
Net working capital settlements		0	62
Other current liabilities		5,713	4,139
Total		$ 28,052	$ 27,637
[1]	As of September 30, 2017, represents the fair value estimate of additional earnings-based contingent consideration that may be realized by Clarity twelve months after the acquisition. As of December 31, 2016, represents the fair value estimate of additional earnings-based contingent consideration that may be realized by the Market Street selling shareholders, Enlighten and Bluetube twelve months after the applicable acquisition.

Balance Sheet Components, Oth40

Balance Sheet Components, Other Non-Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Balance Sheet Components [Abstract]
Deferred compensation liability	$ 4,173	$ 3,662
Deferred income taxes	12,860	12,853
Other non-current liabilities	1,996	2,543
Total	$ 19,029	$ 19,058

Business Combinations, Bluetube

Business Combinations, Bluetube (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Business Combinations [Abstract]
Adjustment to fair value of contingent consideration	$ (389)	$ (865)	$ (828)	$ (1,817)
Allocation of Total Purchase Price Consideration [Abstract]
Goodwill	304,583		$ 304,583		$ 275,205
BlueTube [Member]
Business Combinations [Abstract]
Date of acquisition			Oct. 12, 2016
Cash paid for acquisition			$ 7,200
Initial fair value estimate of additional earnings-based contingent consideration	1,900		1,900
Contingent Consideration Paid	2,700		2,700
Adjustment to fair value of contingent consideration			800
Transaction costs	500		500
Allocation of Total Purchase Price Consideration [Abstract]
Acquired tangible assets	900		900
Acquired intangible assets	3,100		3,100
Liabilities assumed	(600)		(600)
Goodwill	5,700		5,700
Total purchase price	9,100		9,100
Tax deductible amount of Goodwill	$ 6,700		$ 6,700

Business Combinations, RAS (Det

Business Combinations, RAS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Business Combinations [Abstract]
Adjustment to fair value of contingent consideration	$ (389)	$ (865)	$ (828)	$ (1,817)
Allocation of Total Purchase Price Consideration [Abstract]
Goodwill	304,583		$ 304,583		$ 275,205
RAS [Member]
Business Combinations [Abstract]
Date of acquisition			Jan. 3, 2017
Cash paid for acquisition			$ 7,100
Common stock issued	2,100		2,100
Net working capital settlement	(600)		(600)
Initial fair value estimate of additional earnings-based contingent consideration	1,800		$ 1,800
Period to realize additional earnings-based contingent consideration			12 months
Maximum potential additional earnings-based contingent consideration	3,800		$ 3,800
Current contingent consideration liability	0		0
Adjustment to fair value of contingent consideration	(500)		(1,800)
Transaction costs	500		500
Allocation of Total Purchase Price Consideration [Abstract]
Acquired tangible assets	900		900
Acquired intangible assets	5,100		5,100
Liabilities assumed	(1,000)		(1,000)
Goodwill	5,400		5,400
Total purchase price	10,400		10,400
Tax deductible amount of Goodwill	$ 3,700		$ 3,700

Business Combinations, Clarity

Business Combinations, Clarity (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Allocation of Total Purchase Price Consideration [Abstract]
Goodwill	$ 304,583	$ 275,205
Clarity Consultants [Member]
Business Combinations [Abstract]
Date of acquisition	Jun. 22, 2017
Cash paid for acquisition	$ 30,700
Common stock issued	7,300
Net working capital settlement	(500)
Initial fair value estimate of additional earnings-based contingent consideration	$ 4,100
Period to realize additional earnings-based contingent consideration	12 months
Maximum potential additional earnings-based contingent consideration	$ 9,200
Transaction costs	900
Common stock value attributed to future compensation	900
Allocation of Total Purchase Price Consideration [Abstract]
Acquired tangible assets	6,300
Acquired intangible assets	15,400
Liabilities assumed	(3,900)
Goodwill	23,800
Total purchase price	41,600
Tax deductible amount of Goodwill	$ 21,300

Business Combinations, Intangib

Business Combinations, Intangible Assets Acquired (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Intangible Assets Acquired [Abstract]
Aggregate acquisitions	$ 20.5	$ 3.1
Customer Relationships [Member]
Intangible Assets Acquired [Abstract]
Weighted average useful life	6 years	5 years
Useful life	6 years	5 years
Aggregate acquisitions	$ 17.3	$ 2.5
Customer Backlog [Member]
Intangible Assets Acquired [Abstract]
Weighted average useful life	1 year	6 months
Useful life		6 months
Aggregate acquisitions	$ 1.8	$ 0.4
Customer Backlog [Member] | Minimum [Member]
Intangible Assets Acquired [Abstract]
Useful life	3 months
Customer Backlog [Member] | Maximum [Member]
Intangible Assets Acquired [Abstract]
Useful life	1 year
Non-Compete Agreements [Member]
Intangible Assets Acquired [Abstract]
Weighted average useful life	5 years	5 years
Useful life		5 years
Aggregate acquisitions	$ 0.7	$ 0.2
Non-Compete Agreements [Member] | Minimum [Member]
Intangible Assets Acquired [Abstract]
Useful life	2 years
Non-Compete Agreements [Member] | Maximum [Member]
Intangible Assets Acquired [Abstract]
Useful life	5 years
Trade Name [Member]
Intangible Assets Acquired [Abstract]
Weighted average useful life	1 year	1 year
Useful life	1 year	1 year
Aggregate acquisitions	$ 0.1	$ 0
Internally Developed Software [Member]
Intangible Assets Acquired [Abstract]
Weighted average useful life	4 years
Useful life	4 years
Aggregate acquisitions	$ 0.6

Business Combinations, Acquisit

Business Combinations, Acquisitions Included in Results of Operations (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Business Combinations [Abstract]
Revenues	$ 15,799
Net Income	$ 1,276

Business Combinations, Pro Form

Business Combinations, Pro Forma Results of Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition, Pro Forma Information [Abstract]
Revenues	$ 366,958	$ 396,907
Net income	$ 14,716	$ 17,365
Basic net income per share	$ 0.44	$ 0.51
Diluted net income per share	$ 0.43	$ 0.49
Shares used in computing basic net income per share	33,466	34,288
Shares used in computing diluted net income per share	34,395	35,696

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Goodwill) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Goodwill and Intangible Assets [Abstract]
Balance at beginning of period	$ 275,205
Preliminary purchase price allocations for acquisitions	29,191
Effect of foreign currency translation adjustments	187
Balance at end of period	$ 304,583

Goodwill and Intangible Asset48

Goodwill and Intangible Assets, Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Intangible Assets, Net [Abstract]
Gross carrying amounts	$ 90,686	$ 80,428
Accumulated amortization	(35,404)	(35,313)
Net carrying amounts	55,282	45,115
Customer Relationships [Member]
Intangible Assets, Net [Abstract]
Gross carrying amounts	75,857	67,648
Accumulated amortization	(29,475)	(30,458)
Net carrying amounts	46,382	37,190
Non-Compete Agreements [Member]
Intangible Assets, Net [Abstract]
Gross carrying amounts	1,586	1,018
Accumulated amortization	(628)	(557)
Net carrying amounts	958	461
Customer Backlog [Member]
Intangible Assets, Net [Abstract]
Gross carrying amounts	1,640	390
Accumulated amortization	(451)	(195)
Net carrying amounts	1,189	195
Trade Name [Member]
Intangible Assets, Net [Abstract]
Gross carrying amounts	140	30
Accumulated amortization	(53)	(7)
Net carrying amounts	87	23
Internally Developed Software [Member]
Intangible Assets, Net [Abstract]
Gross carrying amounts	11,463	11,342
Accumulated amortization	(4,797)	(4,096)
Net carrying amounts	$ 6,666	$ 7,246

Goodwill and Intangible Asset49

Goodwill and Intangible Assets, Estimated Useful Lives (Details)	9 Months Ended
	Sep. 30, 2017
Customer Relationships [Member] | Minimum [Member]
Intangible Assets [Abstract]
Estimated useful lives	5 years
Customer Relationships [Member] | Maximum [Member]
Intangible Assets [Abstract]
Estimated useful lives	10 years
Non-Compete Agreements [Member] | Minimum [Member]
Intangible Assets [Abstract]
Estimated useful lives	2 years
Non-Compete Agreements [Member] | Maximum [Member]
Intangible Assets [Abstract]
Estimated useful lives	5 years
Customer Backlog [Member] | Minimum [Member]
Intangible Assets [Abstract]
Estimated useful lives	6 months
Customer Backlog [Member] | Maximum [Member]
Intangible Assets [Abstract]
Estimated useful lives	1 year
Trade Name [Member]
Intangible Assets [Abstract]
Estimated useful lives	1 year
Internally Developed Software [Member] | Minimum [Member]
Intangible Assets [Abstract]
Estimated useful lives	1 year
Internally Developed Software [Member] | Maximum [Member]
Intangible Assets [Abstract]
Estimated useful lives	7 years

Goodwill and Intangible Asset50

Goodwill and Intangible Assets, Estimated Amortization Expense (Details) $ in Thousands	Sep. 30, 2017USD ($)
Estimated Amortization Expense [Abstract]
2017 remaining	$ 4,030
2,018	14,226
2,019	12,362
2,020	9,279
2,021	7,217
Thereafter	$ 8,168

Line of Credit (Details)

Line of Credit (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Line of Credit [Abstract]
Leverage Ratio	3
Write-off of unamortized credit facility fees	$ 246	$ 0
Net Interest Expense [Member]
Line of Credit [Abstract]
Write-off of unamortized credit facility fees	$ 200
Revolving Credit Facility [Member] | LIBOR [Member] | Minimum [Member]
Line of Credit [Abstract]
Margin interest rate percentage	1.00%
Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member]
Line of Credit [Abstract]
Margin interest rate percentage	1.75%
Revolving Credit Facility [Member] | Credit Agreement [Member]
Line of Credit [Abstract]
Maximum borrowing capacity	$ 125,000
Additional commitment increase	75,000
Allowable amount of letters of credit for issuance	10,000
Letters of credit outstanding	$ 0
Maturity date	Jun. 9, 2022
Available borrowing capacity	$ 60,000
Ratio of EBITDA plus stock compensation to interest expense for the previous four consecutive fiscal quarters	3
Leverage Ratio needed for payment of dividends	2
Revolving Credit Facility [Member] | Credit Agreement [Member] | Minimum [Member]
Line of Credit [Abstract]
Annual commitment fee percentage on unused capacity	0.15%
Revolving Credit Facility [Member] | Credit Agreement [Member] | Maximum [Member]
Line of Credit [Abstract]
Annual commitment fee percentage on unused capacity	0.20%
Revolving Credit Facility [Member] | Credit Agreement [Member] | Prime Rate [Member]
Line of Credit [Abstract]
Interest rate at end of period	4.25%
Revolving Credit Facility [Member] | Credit Agreement [Member] | Prime Rate [Member] | Minimum [Member]
Line of Credit [Abstract]
Margin interest rate percentage	0.00%
Revolving Credit Facility [Member] | Credit Agreement [Member] | Prime Rate [Member] | Maximum [Member]
Line of Credit [Abstract]
Margin interest rate percentage	0.50%
Revolving Credit Facility [Member] | Credit Agreement [Member] | LIBOR [Member]
Line of Credit [Abstract]
Term of variable rate	1 month
Interest rate at end of period	1.23%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended			9 Months Ended
	Jul. 31, 2017	Jun. 30, 2017	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Taxes [Abstract]
Unrecognized tax benefits			$ 1,500			$ 1,500
Effective tax rate			33.30%		26.90%	46.40%	31.00%
Net non-current deferred tax liability			$ 12,860			$ 12,860		$ 12,853
Foreign earnings repatriated	$ 4,800	$ 4,800
Taxes on foreign earnings repatriated				$ 2,500
Unremitted earnings of foreign subsidiaries			700			700
Unrecognized deferred tax liability on unremitted earnings of foreign subsidiaries			100			100
IRS [Member] | Tax Years 2011, 2012 and 2013 [Member]
Income Taxes [Abstract]
Disallowed tax credit being litigated			$ 2,500			2,500
IRS [Member] | Tax Years 2011 to Date [Member]
Income Taxes [Abstract]
Research and development credits						$ 8,400

Financial Instruments, Gains (L

Financial Instruments, Gains (Losses) on Derivatives, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Gains (Losses) on Derivatives, Net [Abstract]
Gains (losses) on derivatives, net	$ 0	$ (0.1)	$ 0.1	$ (0.2)

Financial Instruments, Notional

Financial Instruments, Notional Amounts (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Notional Amounts [Abstract]
Notional amount	$ 5,169	$ 4,541
Foreign Exchange Contracts [Member]
Notional Amounts [Abstract]
Notional amount	$ 5,169	$ 4,541