GP Strategies (GPX) 10-K 1 Apr 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Mar. 15, 2019	Jun. 30, 2018
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	GPX
Entity Common Stock, Shares Outstanding		16,691,597
Entity Registrant Name	GP STRATEGIES CORP
Entity Central Index Key	0000070415
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 216,560
Entity Small Business	false
Entity Shell Company	false
Entity Emerging Growth Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 13,417	$ 23,612
Accounts and other receivables, less allowance for doubtful accounts of $2,034 in 2018 and $2,492 in 2017	107,673	119,335
Unbilled revenue	80,764	42,958
Prepaid expenses and other current assets	19,048	14,212
Total current assets	220,902	200,117
Property, plant and equipment, net	5,859	5,123
Goodwill	176,124	144,835
Intangible assets, net	20,933	8,363
Deferred tax assets	1,077	1,135
Other assets, net	9,843	5,434
Total assets	434,738	365,007
Current liabilities:
Short-term borrowings	0	37,696
Current portion of long-term debt	0	12,000
Accounts payable and accrued expenses	93,254	78,280
Contract with Customer, Liability	23,704	22,356
Total current liabilities	116,958	150,332
Long-term debt	116,500	16,000
Deferred Tax Liabilities, Net	8,817	3,186
Other noncurrent liabilities	5,894	7,435
Total liabilities	248,169	176,953
Stockholders’ equity:
Preferred stock, par value $0.01 per share; Authorized 10,000,000 shares; no shares issued	0	0
Common stock, par value $0.01 per share; Authorized 35,000,000 shares; issued 17,222,781 shares in 2018 and 2017	172	172
Additional paid-in capital	105,850	107,256
Retained earnings	116,039	106,599
Treasury stock, at cost (603,041 shares in 2018 and 474,855 shares in 2017)	(13,802)	(11,118)
Accumulated other comprehensive loss	(21,690)	(14,855)
Total stockholders’ equity	186,569	188,054
Total Liabilities and Stockholders' Equity	$ 434,738	$ 365,007

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Accounts and other receivables, allowance for doubtful accounts (in dollars)	$ 2,492	$ 2,492
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	35,000,000	35,000,000
Common stock, shares issued	17,222,781	17,222,781
Treasury stock, shares	603,041	474,855

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenue									$ 515,160	$ 509,208	$ 490,559
Cost of revenue									437,417	427,181	410,402
Gross profit	$ 18,292	$ 19,199	$ 22,573	$ 17,679	$ 21,558	$ 18,646	$ 22,435	$ 19,388	77,743	82,027	80,157
General and administrative expenses									54,848	55,753	47,162
Selling and Marketing Expense									4,798	1,666	1,435
Restructuring charges									2,930	3,317	0
Gain (loss) on change in fair value of contingent consideration, net									4,438	1,620	(136)
Operating income									19,605	22,911	31,424
Interest expense									2,945	3,132	1,568
Other (expense) income (including interest income of $8 in 2018, $43 in 2017 and $94 in 2016)									(1,897)	(90)	178
Income before income taxes									14,763	19,689	30,034
Income tax expense									4,927	6,798	9,787
Net income	$ 385	$ 3,244	$ 3,575	$ 2,632	$ (339)	$ 3,281	$ 5,863	$ 4,086	$ 9,836	$ 12,891	$ 20,247
Basic weighted average shares outstanding (in shares)									16,608	16,748	16,696
Diluted weighted average shares outstanding (in shares)									16,696	16,873	16,791
Per common share data:
Basic earnings per share (in dollars per share)	$ 0.02	$ 0.20	$ 0.22	$ 0.16	$ (0.02)	$ 0.20	$ 0.35	$ 0.24	$ 0.59	$ 0.77	$ 1.21
Diluted earnings per share (in dollars per share)	$ 0.02	$ 0.20	$ 0.22	$ 0.16	$ (0.02)	$ 0.19	$ 0.35	$ 0.24	$ 0.59	$ 0.76	$ 1.21

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Investment income, interest	$ 8	$ 43	$ 94

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 9,836	$ 12,891	$ 20,247
Foreign currency translation adjustments	(6,914)	6,686	(8,661)
Change in fair value of interest rate cap, net of tax	142	(142)	0
Change in fair value of interest rate swap, net of tax	(63)	63	0
Comprehensive income	$ 3,001	$ 19,498	$ 11,586

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Interest Rate Cap [Member]	Interest Rate Swap [Member]	Common Stock (0.01 Par) [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit)	Treasury Stock at Cost [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member]Interest Rate Cap [Member]	Accumulated Other Comprehensive Loss [Member]Interest Rate Swap [Member]
Balance at Dec. 31, 2015	$ 158,344			$ 172	$ 105,872	$ 73,598	$ (8,497)	$ (12,801)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,247					20,247
Foreign currency translation adjustments	(8,661)							(8,661)
Repurchases of common stock in the open market	(7,959)						(7,959)
Stock-based compensation expense	3,229				3,229
Income tax benefit from stock-based compensation	137				137
Shares withheld in exchange for tax withholding payments on stock-based compensation	(771)				(771)
Issuance of stock for employer contributions to retirement plan	2,708				(34)		2,742
Net issuances of stock pursuant to stock compensation plans and other	222				(1,864)		2,086
Balance at Dec. 31, 2016	167,496			172	106,569	93,845	(11,628)	(21,462)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjusted balance	167,593			172	106,803	93,708	(11,628)	(21,462)
Net income	12,891					12,891
Foreign currency translation adjustments	6,686							6,686
Change in fair value of derivative instrument, net of tax		$ (142)	$ 63						$ (142)	$ 63
Repurchases of common stock in the open market	(4,302)						(4,302)
Stock-based compensation expense	3,589				3,589
Shares withheld in exchange for tax withholding payments on stock-based compensation	(1,168)				(1,168)
Issuance of stock for employer contributions to retirement plan	2,725				40		2,685
Net issuances of stock pursuant to stock compensation plans and other	119				(2,008)		2,127
Balance at Dec. 31, 2017	188,054			172	107,256	106,599	(11,118)	(14,855)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjusted balance	187,658			172	107,256	106,203	(11,118)	(14,855)
Net income	9,836					9,836
Foreign currency translation adjustments	(6,914)							(6,914)
Change in fair value of derivative instrument, net of tax		$ 142	$ (63)						$ 142	$ (63)
Repurchases of common stock in the open market	(7,993)						(7,993)
Stock-based compensation expense	1,350				1,350
Shares withheld in exchange for tax withholding payments on stock-based compensation	(416)				(416)
Issuance of stock for employer contributions to retirement plan	2,960				(867)		3,827
Net issuances of stock pursuant to stock compensation plans and other	9				(1,473)		1,482
Balance at Dec. 31, 2018	$ 186,569			$ 172	$ 105,850	$ 116,039	$ (13,802)	$ (21,690)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 9,836	$ 12,891	$ 20,247
Adjustments to reconcile net income to net cash provided by operating activities:
(Gain) loss on change in fair value of contingent consideration, net	(4,438)	(1,620)	136
Depreciation and amortization	7,921	6,974	6,462
Non-cash compensation expense	4,310	6,314	6,015
Deferred income taxes	876	(313)	(1,761)
Changes in other operating items, net of acquired amounts:
Accounts and other receivables	23,092	(10,977)	(17,965)
Unbilled revenue	(36,868)	(1,893)	4,234
Prepaid expenses and other current assets	705	(2,297)	(2,490)
Accounts payable and accrued expenses	8,110	15,392	3,732
Deferred revenue	(2,094)	2,520	383
Income tax benefit from stock-based compensation	0	0	(137)
Contingent consideration payments in excess of fair value on acquisition date	0	(408)	(539)
Other	(240)	(323)	(240)
Net Cash Provided by (Used in) Operating Activities	11,210	26,260	18,077
Cash flows from investing activities:
Additions to property, plant and equipment	(2,834)	(2,734)	(1,402)
Acquisitions, net of cash acquired	(55,290)	(11,111)	(6,801)
Investment in joint venture	0	0	(1,600)
Capitalized software development costs	(3,544)	(1,313)	(933)
Other investing activities	(86)	(295)	14
Net Cash Provided by (Used in) Investing Activities	(61,754)	(15,453)	(10,722)
Cash flows from financing activities:
Proceeds from (repayment of) short-term borrowings	(37,577)	19,864	(16,127)
Proceeds from long-term debt	146,000	0	40,000
Repayment of long-term debt	(57,500)	(12,000)	(24,444)
Contingent consideration payments	0	(4,657)	(2,244)
Change in negative cash book balance	(1,278)	(2,138)	1,366
Repurchases of common stock	(8,522)	(3,773)	(8,747)
Tax withholding payments for employee stock-based compensation in exchange for shares surrendered	(416)	(1,168)	(771)
Premium paid on interest rate cap	0	(474)	0
Cash proceeds from termination of interest rate derivatives	544	0	0
Payment of debt issuance costs	(1,231)	0	0
Other financing activities	10	120	185
Net Cash Provided by (Used in) Financing Activities	40,030	(4,226)	(10,782)
Effect of exchange rate changes on cash	319	685	(1,257)
Net change in cash	(10,195)	7,266	(4,684)
Cash at beginning of year	23,612	16,346	21,030
Cash at end of year	13,417	23,612	16,346
Cash paid during the year for:
Interest	3,741	1,841	1,523
Income taxes	4,528	6,256	10,604
Non-cash financing activities:
Accrued share repurchases	(529)	529	0
Accrued contingent consideration	$ 905	$ 5,613	$ 5,166

Description of Business and Sig

Description of Business and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Description of Business and Significant Accounting Policies	Description of Business and Significant Accounting Policies Business GP Strategies Corporation is a global performance improvement solutions provider of training, digital learning solutions, management consulting and engineering services. References in this report to “GP Strategies,” the “Company,” “we” and “our” are to GP Strategies Corporation and its subsidiaries, collectively. FASB Codification We follow generally accepted accounting principles (“GAAP”) set by the Financial Accounting Standards Board (“FASB”). References to GAAP issued by the FASB in these footnotes are to the FASB Accounting Standards Codification, sometimes referred to as ASC. Basis of Consolidation The consolidated financial statements include the operations of our wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated. Significant Customers & Concentration of Credit Risk We have a market concentration of revenue in both the automotive sector and financial services & insurance sector. Revenue from the automotive industry accounted for approximately 23% , 22% and 22% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 , respectively. In addition, we have a concentration of revenue from a single automotive customer, which accounted for approximately 14% , 13% and 13% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 respectively. As of December 31, 2018 accounts receivable from a single automotive customer totaled $19.9 million , or 18% , of our consolidated accounts receivable balance. Revenue from the financial services and insurance industry accounted for approximately 19% , 20% and 21% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 , respectively. In addition, we have a concentration of revenue from a single financial services customer, which accounted for approximately 13% , 14% and 15% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 respectively. As of December 31, 2018 , billed and unbilled accounts receivable from a single financial services customer totaled $21.2 million , or 11% , of our consolidated accounts receivable and costs and unbilled revenue balances. No other single customer accounted for more than 10% of our consolidated revenue in 2018 or consolidated accounts receivable balance as of December 31, 2018 . Cash We maintain our cash balances in bank accounts at various financial institutions. Outstanding checks which have been issued but not presented to the banks for payment in excess of amounts on deposit may create negative book cash balances. We transfer cash on an as-needed basis to fund these items as they clear the bank in subsequent periods. Such negative cash balances are included in accounts payable and accrued expenses and totaled $1.8 million and $2.9 million as of December 31, 2018 and 2017 , respectively. Changes in negative book cash balances from period to period are reported as a financing activity in the consolidated statement of cash flows. Allowance for Doubtful Accounts Receivable Trade accounts receivable are recorded at invoiced amounts. We evaluate the collectability of trade accounts receivable based on a combination of factors. When we are aware that a specific customer may be unable to meet its financial obligations to us, such as in the case of bankruptcy filings or deterioration in the customer’s operating results or financial position, we evaluate the need to record a specific reserve for bad debt to reduce the related receivable to the amount we reasonably believe is collectible. We also record reserves for bad debt for all other customers based on a variety of factors, including the length of time the receivables are past due, historical collection experience and trends of past due accounts, write-offs and specific identification and review of past due accounts. Actual collections of trade receivables could differ from management’s estimates due to changes in future economic or industry conditions or specific customers’ financial conditions. Activity in our allowance for doubtful accounts was comprised of the following for the periods indicated: Year ended December 31, 2018 2017 2016 (In thousands) Beginning balance $ 2,492 $ 1,091 $ 1,856 Additions 234 1,720 368 Deductions (692 ) (319 ) (1,133 ) Ending balance $ 2,034 $ 2,492 $ 1,091 During the fourth quarter ended December 31, 2017, we recognized a $1.3 million bad debt reserve related to accounts receivable on a contract with a foreign oil and gas client which was terminated. During the third quarter of 2017, we also recognized a $ 2.6 million revenue and gross profit reduction related to this contract due to a performance dispute resulting in an increase in estimated costs to complete the project. Foreign Currency Translation The functional currencies of our international operations are the respective local currencies of the countries in which we operate. The translation of the foreign currency into U.S. dollars is performed for balance sheet accounts using current exchange rates in effect at the balance sheet date and for revenue and expense accounts using the weighted average exchange rates prevailing during the year. The unrealized gains and losses resulting from such translation are included as a component of comprehensive income. Transaction gains and losses arising from currency exchange rate fluctuations on transactions denominated in a currency other than the local functional currency are included in “Other income (expense)" on our Consolidated Statements of Operations. We had foreign currency transaction losses totaling $2.3 million , $0.3 million and $0.2 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Revenue Recognition On January 1, 2018, we adopted FASB Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers ("Topic 606") and all the related amendments. The impact of adoption is discussed below under the "Recent Accounting Standards" section. Further information regarding our revenue recognition policy, including our full accounting policy description, can be found in Note 2. Contract Related Assets and Liabilities The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled revenue (contract assets), and deferred revenue (contract liabilities) on the consolidated balance sheet. Amounts charged to our clients become billable according to the contract terms, which usually consider the passage of time, achievement of milestones or completion of the project. When billings occur after the work has been performed, such unbilled amounts will generally be billed and collected within 60 to 120 days but typically no longer than over the next twelve months. When we advance bill clients prior to the work being performed, generally, such amounts will be earned and recognized in revenue within the next twelve months. These assets and liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Changes in the contract asset and liability balances during the twelve -month period ended December 31, 2018 were not materially impacted by any other factors, except for a significant increase in unbilled contract receivables as of December 31, 2018 compared to 2017 due to a delay in billings at the end of 2018 in connection with the implementation of a new ERP system in the fourth quarter of 2018. Comprehensive Income Comprehensive income consists of net income, foreign currency translation adjustments, and the change in fair value of interest rate derivatives, net of tax. Other Current Assets Prepaid expenses and other current assets on our consolidated balance sheet include prepaid expenditures for goods or services before the goods are used or the services are received, inventories and work in progress on customer contracts. Prepaid expenses are charged to expense in the periods the benefits are realized. Inventories are stated at lower of cost or market. Provision is made to reduce excess and obsolete inventories to their estimated net realizable value. Costs included in work in progress on customer contracts are recognized to cost of revenue when the performance obligation is satisfied and revenue is recognized. Property, Plant and Equipment Property, plant and equipment are carried at cost (or fair value at acquisition date for assets obtained through business combinations). Major additions and improvements are capitalized, while maintenance and repairs which do not extend the lives of the assets are expensed as incurred. Gain or loss on the disposition of property, plant and equipment is recognized in operations when realized. Depreciation of property, plant and equipment is recognized on a straight-line basis over the following estimated useful lives: Class of assets Useful life Buildings and improvements 5 to 40 years Machinery, equipment, and furniture and fixtures 3 to 10 years Leasehold improvements Shorter of asset life or term of lease Impairment of Long-Lived Assets Long-lived assets, such as property, plant, and equipment, and intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized at the amount by which the carrying amount of the asset exceeds the fair value of the asset. Impairment of long-lived assets is assessed at the lowest level for which there are identifiable cash flows that are independent from other groups of assets. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and would no longer be depreciated. Goodwill and Intangible Assets Our intangible assets include amounts recognized in connection with acquisitions, including customer relationships, tradenames, technology and intellectual property. Intangible assets are initially valued at fair market value using generally accepted valuation methods appropriate for the type of intangible asset. Amortization is recognized on a straight-line basis over the estimated useful life of the intangible assets. Intangible assets with definite lives are reviewed for impairment if indicators of impairment arise. Except for goodwill, we do not have any intangible assets with indefinite useful lives. Goodwill represents the excess of costs over fair value of assets of businesses acquired. We review our goodwill for impairment annually as of October 1 and whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. We test goodwill at the reporting unit level. ASC 350 permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. Under ASC 350, an entity is not required to perform step one of the goodwill impairment test for a reporting unit if it is more likely than not that its fair value is greater than its carrying amount. For our annual goodwill impairment tests as of both October 1, 2018 and 2017 , we performed a quantitative step one goodwill impairment test and concluded that the fair values of each of our reporting units exceeded their respective carrying values. In the step one impairment test, we compare the fair value of each reporting unit to its carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, goodwill is not impaired and we are not required to perform further testing. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then we must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit's goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit’s assets and liabilities in a manner similar to a purchase price allocation, with any residual fair value allocated to goodwill. If the carrying value of a reporting unit's goodwill exceeds its implied fair value, then we record an impairment loss equal to the difference. Under the two-step impairment test, we determine the fair value of our reporting units using both an income approach and a market approach, and weigh both approaches to determine the fair value of each reporting unit. Under the income approach, we perform a discounted cash flow analysis which incorporates management’s cash flow projections over a five-year period and a terminal value is calculated by applying a capitalization rate to terminal year projections based on an estimated long-term growth rate. The five-year projected cash flows and calculated terminal value are discounted using a weighted average cost of capital (“WACC”) which takes into account the costs of debt and equity. The cost of equity is based on the risk-free interest rate, equity risk premium, industry and size equity premiums and any additional market equity risk premiums as deemed appropriate for each reporting unit. To arrive at a fair value for each reporting unit, the terminal value is discounted by the WACC and added to the present value of the estimated cash flows over the discrete five-year period. There are a number of other variables which impact the projected cash flows, such as expected revenue growth and profitability levels, working capital requirements, capital expenditures and related depreciation and amortization. Under the market approach, we perform a comparable public company analysis and apply revenue and earnings multiples from the identified set of companies to the reporting unit’s actual and forecasted financial performance to determine the fair value of each reporting unit. We evaluate the reasonableness of the fair value calculations of our reporting units by reconciling the total of the fair values of all of our reporting units to our total market capitalization, and adjusting for an appropriate control premium. In addition, we make certain judgments in allocating shared assets and liabilities to determine the carrying values for each of our reporting units. Determining the fair value of a reporting unit is judgmental in nature and involves the use of significant estimates and assumptions. These estimates and assumptions include revenue growth rates and operating margins used to calculate projected future cash flows, risk-adjusted discount rates, future economic and market conditions and determination of appropriate market comparables. We base our fair value estimates on assumptions we believe to be reasonable but that are unpredictable and inherently uncertain. Actual future results may differ from those estimates. In addition, we make certain judgments and assumptions in allocating shared assets and liabilities to determine the carrying values for each of our reporting units. The timing and frequency of our goodwill impairment tests are based on an ongoing assessment of events and circumstances that would indicate a possible impairment. We will continue to monitor our goodwill and intangible assets for impairment and conduct formal tests when impairment indicators are present. Contingent Consideration for Business Acquisitions Acquisitions may include contingent consideration payments based on future financial measures of an acquired company. Contingent consideration is required to be recognized at fair value as of the acquisition date. We estimate the fair value of these liabilities using an appropriate valuation methodology, typically either an income-based approach or a simulation model, such as the Monte Carlo model, depending on the structure of the contingent consideration arrangement. At each reporting date, the contingent consideration obligation is revalued to estimated fair value and changes in fair value subsequent to the acquisition are reflected in income or expense in the consolidated statements of operations, and could cause a material impact to our operating results. Changes in the fair value of contingent consideration obligations may result from changes in discount periods and rates and changes in the timing and amount of revenue and/or earnings projections. Other Assets Other assets primarily include an investment in a joint venture, certain software development costs, unamortized debt issuance costs relating to our revolving credit facility, and derivative assets associated with our interest rate swap and cap agreements. We account for a 10% interest in a joint venture partnership under the equity method of accounting because significant influence exists due to certain factors, including representation on the partnership’s Management Board and voting rights. We capitalize the cost of internal-use software in accordance with ASC Topic 350-40, Internal-Use Software . These costs consist of internal labor costs and payments made to third parties for software development and implementation and are amortized using the straight-line method over their estimated useful lives, ranging from three to eight years. We apply hedge accounting to our interest rate derivatives which are discussed in detail in Note 6. We amortize debt issuance costs to interest expense on a straight-line basis over the term of our revolving credit facility. Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and for operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We establish accruals for uncertain tax positions taken or expected to be taken in a tax return when it is more likely than not (i.e., a likelihood of more than fifty percent) that the position would be sustained upon examination by tax authorities that have full knowledge of all relevant information. A recognized tax position is then measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement. Favorable or unfavorable adjustment of the accrual for any particular issue would be recognized as an increase or decrease to income tax expense in the period of a change in facts and circumstances. Interest and penalties related to income taxes are accounted for as income tax expense. Earnings per Share Basic earnings per share (“EPS”) are computed by dividing earnings by the weighted average number of common shares outstanding during the periods. Diluted EPS reflects the potential dilution of common stock equivalent shares that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. Our dilutive common stock equivalent shares consist of stock options and restricted stock units outstanding under our stock-based incentive plans and are computed under the treasury stock method, using the average market price during the period. Performance-based restricted stock unit awards are included in the computation of diluted shares based on the probable outcome of the underlying performance conditions being achieved. The following table presents instruments which were not dilutive and were excluded from the computation of diluted EPS in each period, as well as the weighted average dilutive common stock equivalent shares which were included in the computation of diluted EPS: Year ended December 31, 2018 2017 2016 (In thousands) Non-dilutive instruments 82 13 45 Dilutive common stock equivalents 88 125 95 Stock-Based Compensation Pursuant to our stock-based incentive plans which are described more fully in Note 11, we grant stock options, restricted stock units, performance-based stock units (PSU's) and equity to officers, employees, and members of the Board of Directors. We compute compensation expense for all equity-based compensation awards issued to employees using the fair-value measurement method. We recognize compensation expense on a straight-line basis over the requisite service period for stock-based compensation awards with both graded and cliff vesting terms. We recognize forfeitures as they occur with a reduction in compensation expense in the period of forfeiture. We do not capitalize any material portion of our stock-based compensation. We recognize compensation expense for PSU's on a straight-line basis over the performance period based on the probable outcome of achievement of the financial targets. At the end of each reporting period, we estimate the number of PSU's expected to vest, based on the probability and extent to which the performance goals will be met, and take into account these estimates when calculating the expense for the period. If the number of shares expected to be earned changes during the performance period, we will make a cumulative adjustment to compensation expense based on the revised number of shares expected to be earned. We estimate the fair value of our stock options on the date of grant using the Black-Scholes option pricing model, which requires various assumptions such as expected term, expected stock price volatility and risk-free interest rate. We estimate the expected term of stock options granted taking into consideration historical data related to stock option exercises. We use historical stock price data in order to estimate the expected volatility factor of stock options granted. The risk-free interest rate for the periods within the expected life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. 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 period. On an ongoing basis, we evaluate the estimates used, including but not limited to those related to revenue recognition, the allowance for doubtful accounts receivable, impairments of goodwill and other intangible assets, valuation of intangible assets acquired and contingent consideration liabilities assumed in business acquisitions, valuation of stock-based compensation awards and income taxes. Actual results could differ from these estimates. Fair Value Estimates ASC Topic 820, Fair Value Measurements and Disclosure (“Topic 820”), defines fair value, establishes a market-based framework or hierarchy for measuring fair value, and expands disclosures about fair value measurements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The guidance within Topic 820 is applicable whenever another accounting pronouncement requires or permits assets and liabilities to be measured at fair value. The fair value hierarchy prioritizes the inputs used in valuation techniques into three levels as follows: • Level 1 – unadjusted quoted prices for identical assets or liabilities in active markets; • Level 2 – quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs other than quoted market prices that are observable or that can be corroborated by observable market data by correlation; and • Level 3 – unobservable inputs based upon the reporting entity’s internally developed assumptions which market participants would use in pricing the asset or liability. The carrying value of financial instruments including cash, accounts receivable, accounts payable and short-term borrowings approximate estimated market values because of short-term maturities and interest rates that approximate current rates. In addition, the fair value of our long-term debt approximated its carrying value as of December 31, 2018 as it bears interest at variable rates. Our fair value measurements related to goodwill, intangible assets and contingent consideration are recognized in connection with acquisitions and are valued using Level 3 inputs. Our interest rate derivatives are valued using Level 2 inputs. Leases We lease various office space, machinery and equipment under noncancelable operating leases which have minimum lease obligations. Many of the leases contain provisions for rent escalations based on increases in real estate taxes and operating costs incurred by the lessor. Rent expense is recognized in the statements of operations as incurred except for escalating rents, which are expensed on a straight-line basis over the terms of the leases. Legal Expenses We are involved, from time to time, in litigation and proceedings arising out of the ordinary course of business. Costs for legal services rendered in the course of these proceedings are charged to expense as they are incurred. Reclassifications Certain prior year amounts have been reclassified to conform with the current year presentation. Recent Accounting Standards ASU 2016-02, Leases (Topic 842) requires the recognition of lease rights and obligations as assets and liabilities on the balance sheet. Previously, lessees were not required to recognize on the balance sheet assets and liabilities arising from operating leases. The ASU also requires disclosure of key information about leasing arrangements. ASU 2016-02 is effective on January 1, 2019, using a modified retrospective method of adoption as of January 1, 2017. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, which provides an alternative transition method of adoption, permitting the recognition of a cumulative-effect adjustment to retained earnings on the date of adoption in lieu of modified retrospective adoption. We adopted the standard effective January 1, 2019, using the alternative transition method provided by ASU 2018-11. The new standard provides several optional practical expedients for use in transition. We have elected to use what the FASB has deemed the “package of practical expedients,” which allows us not to reassess our previous conclusions about lease identification, lease classification and the accounting treatment for initial direct costs. The ASU also provides several optional practical expedients for the ongoing accounting for leases. We have elected the short-term lease recognition exemption for all leases that qualify, meaning that for these leases, we will not recognize right-of-use (ROU) assets or lease liabilities on our consolidated balance sheet. Additionally, we have elected to use the practical expedient to not separate lease and non-lease components for leases of real estate, meaning that for these leases, the non-lease components are included in the associated ROU asset and lease liability balances on our consolidated balance sheet. The most significant effects of the standard on our consolidated financial statements are (1) the recognition of new ROU assets and lease liabilities on our consolidated balance sheet for our operating leases, and (2) significant new disclosures about our leasing activities. Based on our portfolio of leases as of December 31, 2018, we estimate that ROU assets ranging from $30 million to $32 million and lease liabilities ranging from $33 million to $35 million , will be recorded on the balance sheet upon adoption, which will include reclassifying prepaid rent and deferred rent as a component of the ROU asset. The new standard is not expected to have a material impact on our results of operations or cash flows. The Company is evaluating the new disclosure requirements and incorporating the collection of relevant data into its processes in preparation for disclosure in 2019. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements for fair value measurements. The guidance promotes a framework to help improve the effectiveness of disclosures in the notes and is effective for annual and interim periods beginning after December 15, 2019, although early adoption is permitted. We are in the process of evaluating the impact of this new guidance on our consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment . The standard will remove step 2 from the goodwill impairment test. Under the ASU, an entity should perform its annual goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value, however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for public companies for annual reporting periods beginning after December 15, 2019. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. We adopted the standard on January 1, 2019. The adoption of the ASU did not have an effect on our results of operations, financial condition or cash flows. In August 2017, the FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities . The standard will ease the administrative burden of hedge documentation requirements and assessing hedge effectiveness. ASU 2017-12 is effective for public companies for annual reporting periods beginning after December 15, 2018 but early adoption is permitted. We adopted the standard on January 1, 2019. The adoption of the ASU did not have an effect on our results of operations, financial condition or cash flows. In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No.2016-09, Compensation—Stock Compensation (Topic 718) ("ASU 2016-09"), which simplifies several areas of accounting for share-based compensation arrangements. Upon adoption, ASU 2016-09 requires that excess tax benefits or deficiencies for share-based payments be recorded as income tax expense or benefit and reflected within operating cash flows rather than being recorded within equity and reflected within financing cash flows. The standard also requires companies to make an accounting policy election on whether to account for forfeitures on share-based payments by 1) recognizing forfeitures as they occur; or 2) estimating the number of awards expected to be forfeited and periodically adjusting the estimate, as was previously required. The standard is effective for annual and interim reporting periods of public companies beginning after December 15, 2016, although early adoption was permitted. We adopted ASU 2016-09 on January 1, 2017 and elected to make an accounting policy change to recognize forfeitures as they occur. The impact of adoption on the consolidated balance sheet was a cumulative-effect adjustment of $0.1 million , decreasing opening retained earnings. We recognized an income tax benefit of less than $0.1 million relating to excess tax benefits on stock-based compensation awards during the twelve months ended December 31, 2017 and could experience volatility in our effective income tax rate in the future as a result of this accounting change. We also elected to prospectively apply the change in presentation on the statement of cash flows and did not reclassify excess tax benefits on stock-based compensation from financing to operating cash flows for the prior period presented. In August 2018, the FASB issued ASU No. 2018-15, Customer's Accounting for Implementation Costs Incur

Revenue Revenue

Revenue Revenue	12 Months Ended
	Dec. 31, 2018
Revenue [Abstract]
Revenue	Revenue Significant Accounting Policy We account for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers (ASC Topic 606), which we adopted on January 1, 2018, using the modified retrospective method. Revenue is measured based on the consideration specified in a contract with a customer. Most of our contracts with customers contain transaction prices with fixed consideration, however, some contracts may contain variable consideration in the form of discounts, rebates, refunds, credits, price concessions, incentives, performance bonuses, penalties and other similar items. When a contract includes variable consideration, we evaluate the estimate of variable consideration to determine whether the estimate needs to be constrained; therefore, we include the variable consideration in the transaction price only to the extent that it is probable that a significant reversal of the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. We recognize revenue when we satisfy a performance obligation by transferring control over a product or service to a customer. This can result in recognition of revenue over time as we perform services or at a point in time when the deliverable is transferred to the customer, depending on an evaluation of the criteria for over time recognition in ASC Topic 606. Further details regarding our revenue recognition for various revenue streams are discussed below. Nature of goods and services Over 90% of our revenue is derived from services provided to our customers for training, consulting, technical, engineering and other services. Less than 10% of our revenue is derived from various other offerings including custom magazine publications and assembly of glovebox portfolios for automotive manufacturers, licenses of software and other intellectual property, and software as a service (SaaS) arrangements. Our primary contract vehicles are time-and-materials, fixed price (including fixed-fee per transaction) and cost-reimbursable contracts. Each contract has different terms based on the scope, deliverables and complexity of the engagement, requiring us to make judgments and estimates about recognizing revenue. Under time-and-materials and cost-reimbursable contracts, the contractual billing schedules are based on the specified level of resources we are obligated to provide. Revenue under these contract types are recognized over time as services are performed as the client simultaneously receives and consumes the benefits provided by our performance throughout the engagement. The time and materials incurred for the period is the measure of performance and, therefore, revenue is recognized in that amount. For fixed price contracts which typically involve a discrete project, such as development of training content and materials, design of training processes, software implementation, or engineering projects, the contractual billing schedules are not necessarily based on the specified level of resources we are obligated to provide. These discrete projects generally do not contain milestones or other measures of performance. The majority of our fixed price contracts meet the criteria in ASC Topic 606 for over time revenue recognition. For these contracts, revenue is recognized using a percentage-of-completion method based on the relationship of costs incurred to total estimated costs expected to be incurred over the term of the contract. We believe this methodology is a reasonable measure of proportional performance since performance primarily involves personnel costs and services provided to the customer throughout the course of the projects through regular communications of progress toward completion and other project deliverables. In addition, the customer is required to pay us for the proportionate amount of our fees in the event of contract termination. A small portion of our fixed price contracts do not meet the criteria in ASC Topic 606 for over time revenue recognition. For these projects, we defer revenue recognition until the performance obligation is satisfied, which is generally when the final deliverable is provided to the client. The direct costs related to these projects are capitalized and then recognized as cost of revenue when the performance obligation is satisfied. For fixed price contracts, when total direct cost estimates exceed revenues, the estimated losses are recognized immediately. The use of the percentage-of-completion method requires significant judgment relative to estimating total contract costs, including assumptions relative to the length of time to complete the project, the nature and complexity of the work to be performed, and anticipated changes in estimated salaries and other costs. Estimates of total contract costs are continuously monitored during the term of the contract, and recorded revenues and costs are subject to revision as the contract progresses. When revisions in estimated contract revenues and costs are determined, such adjustments are recorded in the period in which they are first identified. Adjustments to our fixed price contracts in the aggregate resulted in a net increase (decrease) to revenue of $ 1.5 million , $ (0.8) million , and $0.6 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. For certain fixed-fee per transaction contracts, such as delivering training courses or conducting workshops, revenue is recognized during the period in which services are delivered in accordance with the pricing outlined in the contracts. For certain fixed-fee per transaction and fixed price contracts in which the output of the arrangement is measurable, such as for the shipping of publications and print materials, revenue is recognized at the point in time at which control is transferred which is upon delivery. Taxes assessed by a government authority that are both imposed on and concurrent with a specific revenue-producing transaction, that we collect from a customer, are excluded from revenue. Performance Obligations A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in ASC Topic 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. For contracts with multiple performance obligations, we allocate the contract’s transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. As of December 31, 2018 , we had $318.0 million of remaining performance obligations, which we also refer to as total backlog. We expect to recognize over 90 percent of our remaining performance obligations as revenue within the next twelve months. We did not apply any of the practical expedients permitted by ASC Topic 606 in determining the amount of our performance obligations as of December 31, 2018 . Contract Balances The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled revenue (contract assets), and deferred revenue (contract liabilities) on the consolidated balance sheet. Amounts charged to our clients become billable according to the contract terms, which usually consider the passage of time, achievement of milestones or completion of the project. When billings occur after the work has been performed, such unbilled amounts will generally be billed and collected within 60 to 120 days but typically no longer than over the next twelve months. When we advance bill clients prior to the work being performed, generally, such amounts will be earned and recognized in revenue within the next twelve months. These assets and liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Changes in the contract asset and liability balances during the year ended December 31, 2018 were not materially impacted by any other factors, except for a significant increase in unbilled contract receivables as of December 31, 2018 compared to 2017 due to a delay in billings at the end of 2018 in connection with the implementation of a new ERP system in the fourth quarter of 2018. Revenue recognized for the year ended December 31, 2018 , that was included in the contract liability balance at the beginning of the year was $20.0 million , and primarily represented revenue from services performed during the current period for which we received advance payment from clients in a prior period. Contract Costs Costs to fulfill contracts which do not meet the over time revenue recognition criteria are capitalized and recognized to cost of revenue when the performance obligation is satisfied and revenue is recognized. Such costs are included in prepaid expenses and other current assets on the consolidated balance sheet and totaled $1.6 million as of December 31, 2018 . Recognition of such contract costs totaled $5.4 million for the year ended December 31, 2018 , and is included in cost of revenue on the consolidated statements of operations. Applying the practical expedient in ASC Topic 606, we recognize the incremental costs of obtaining contracts (i.e. sales commissions) as an expense when incurred if the amortization period of the assets that we otherwise would have recognized is one year or less. Substantially all of our sales commission arrangements have an amortization period of one year or less. As of December 31, 2018 , we did not have any capitalized sales commissions. Revenue by Category The following series of tables presents our revenue disaggregated by various categories (dollars in thousands). Years Ended December 31, Workforce Excellence Business Transformation Services Consolidated 2018 2017 2016 2018 2017 2016 2018 2017 2016 Revenue by type of service: Managed learning services $ 206,388 207,007 204,007 $ — — $ 206,388 207,007 204,007 Engineering & technical services 110,426 101,252 101,908 — — 110,426 101,252 101,908 Sales enablement — — — 103,740 101,196 101,939 103,740 101,196 101,939 Organizational development — — — 94,606 99,753 82,705 94,606 99,753 82,705 $ 316,814 308,259 305,915 $ 198,346 200,949 184,644 $ 515,160 509,208 490,559 Revenue by geographic region: Americas $ 213,938 198,653 198,393 $ 165,807 175,027 164,727 $ 379,745 373,680 363,120 Europe Middle East Africa 91,764 100,296 97,274 38,171 30,461 22,603 129,935 130,757 119,877 Asia Pacific 30,688 29,828 30,173 2,634 376 450 33,322 30,204 30,623 Eliminations (19,576 ) (20,518 ) (19,925 ) (8,266 ) (4,915 ) (3,136 ) (27,842 ) (25,433 ) (23,061 ) $ 316,814 308,259 305,915 $ 198,346 200,949 184,644 $ 515,160 509,208 490,559 Revenue by client market sector: Automotive $ 10,646 10,102 7,672 $ 105,431 101,285 101,627 $ 116,077 111,387 109,299 Financial & Insurance 87,813 86,718 87,102 12,303 16,339 15,792 100,116 103,057 102,894 Manufacturing 33,055 35,795 37,135 16,156 17,134 8,625 49,211 52,929 45,760 Energy / Oil & Gas 37,088 34,195 35,580 4,752 2,429 3,258 41,840 36,624 38,838 U.S. Government 29,584 25,254 25,011 8,782 9,475 10,191 38,366 34,729 35,202 U.K. Government 18,733 27,734 25,487 — — — 18,733 27,734 25,487 Information & Communication 14,083 18,123 19,410 9,510 10,490 7,942 23,593 28,613 27,352 Aerospace 25,989 22,142 21,262 3,683 6,549 1,189 29,672 28,691 22,451 Electronics Semiconductor 15,070 16,449 23,253 857 1,069 821 15,927 17,518 24,074 Life Sciences 15,009 8,420 7,113 8,750 9,377 10,433 23,759 17,797 17,546 Other 29,744 23,327 16,890 28,122 26,802 24,766 57,866 50,129 41,656 $ 316,814 308,259 305,915 $ 198,346 200,949 184,644 $ 515,160 509,208 490,559

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions	Acquisitions Below is a summary of the acquisitions we completed during 2018, 2017 and 2016 respectively. 2018 Acquisitions The following table summarizes the purchase prices and purchase price allocations for the acquisitions completed during the year ended December 31, 2018. A description of the acquired businesses is summarized below the table. Acquired company TTi Global TTi Europe IC Axon Hula Acquisition date 11/30/2018 8/7/2018 5/1/2018 1/2/2018 Cash purchase price $ 14,195 $ 3,000 $ 30,535 $ 10,000 Fair value of contingent consideration — — 905 — Total purchase price $ 14,195 $ 3,000 $ 31,440 $ 10,000 Purchase price allocation: Cash $ 1,777 $ 125 $ 538 $ — Accounts receivable and other assets 15,926 1,684 3,110 — Fixed assets 305 9 368 — Customer-related intangible assets 4,444 762 10,365 1,367 Marketing-related intangible assets (tradename) 454 45 239 106 Goodwill 3,327 2,179 21,613 8,527 Total assets 26,233 4,804 36,233 10,000 Accounts payable and accrued expenses 9,249 1,609 983 — Deferred revenue 395 126 979 — Deferred tax liability 2,394 69 2,831 — Total liabilities 12,038 1,804 4,793 — Net assets acquired $ 14,195 $ 3,000 $ 31,440 $ 10,000 TTi Global On November 30, 2018, we entered into a Share Purchase Agreement with TTi Global, Inc. ("TTi Global") and its stockholders and acquired all of the outstanding shares of TTi Global. The transaction under the Share Purchase Agreement includes the acquisition of TTi Global’s subsidiaries (except for its UK and Spain subsidiaries and dormant entities) and certain affiliated companies. The Company purchased TTi Global’s UK and Spain subsidiaries in a separate transaction in August 2018 which is discussed further below. TTi Global is a provider of training, staffing, research and consulting solutions to industries across various sectors with automotive as a core focus. The total upfront purchase price for TTi Global was $ 14.2 million of cash paid at closing on November 30, 2018. The purchase price allocation above is preliminary as the purchase price is subject to reduction based on a minimum working capital requirement, as defined in the Share Purchase Agreement, which is expected to be settled during the second quarter of 2019. The purchase price allocation for the acquisition includes $ 4.4 million of a customer-related intangible asset which is being amortized over nine years and $ 0.5 million of a marketing-related intangible asset which is being amortized over one year from the acquisition date. The goodwill recognized is due to the expected synergies from combining the operations of the acquiree with the company. None of the goodwill recorded for financial statement purposes is deductible for tax purposes. The acquired TTi Global business is included in the Business Transformation Services segment and the results of its operations have been included in the consolidated financial statements beginning December 1, 2018. The pro-forma impact of the acquisition is not material to our results of operations. TTi Europe On August 7, 2018, we acquired the entire share capital of TTi (Europe) Limited, a subsidiary of TTi Global, Inc. (TTi Europe), a provider of training and research services primarily for the automotive industry located in the United Kingdom. The upfront purchase price was $ 3.0 million in cash. The purchase price allocation for the acquisition includes $ 0.8 million of a customer-related intangible asset which is being amortized over nine years from the acquisition date. The goodwill recognized is due to the expected synergies from combining the operations of the acquiree with the company. None of the goodwill recorded for financial statement purposes is deductible for tax purposes. The acquired TTi Europe business is included in the Business Transformation Services segment and the results of its operations have been included in the consolidated financial statements beginning August 7, 2018. The pro-forma impact of the acquisition is not material to our results of operations. IC Axon On May 1, 2018, we acquired the entire share capital of IC Acquisition Corporation, a Delaware corporation, and its subsidiary, IC Axon Inc., a Canadian corporation (IC Axon). IC Axon develops science-driven custom learning solutions for pharmaceutical and life science customers. The upfront purchase price was $ 30.5 million in cash. In addition, the purchase agreement requires up to an additional $ 3.5 million of consideration, contingent upon the achievement of an earnings target during a twelve-month period subsequent to the closing of the acquisition. The purchase price allocation for the acquisition includes $ 10.4 million of a customer-related intangible asset which is being amortized over eight years and $ 0.2 million of a marketing-related intangible assets being amortized over three years from the acquisition date. The goodwill recognized is due to the expected synergies from combining the operations of the acquiree with the company. None of the goodwill recorded for financial statement purposes is deductible for tax purposes. The acquired IC Axon business is included in the Workforce Excellence segment and the results of its operations have been included in the consolidated financial statements beginning May 1, 2018. The pro-forma impact of the acquisition is not material to our results of operations. Hula Partners On January 2, 2018, we acquired the business and certain assets of Hula Partners, a provider of SAP Success Factors Human Capital Management (HCM) implementation services. The purchase price was $ 10.0 million which was paid in cash at closing. The goodwill recognized is due to the expected synergies from combining operations of the acquiree with the Company. The purchase price allocation for the acquisition includes $1.4 million of a customer-related intangible asset which is being amortized over four years and $0.1 million of a marketing-related intangible asset which is being amortized over two years from the acquisition date. All of the goodwill recorded for financial statement purposes is deductible for tax purposes. The acquired Hula Partners business is included in the Business Transformation Services segment and the results of its operations have been included in the consolidated financial statements beginning January 2, 2018. The pro-forma impact of the acquisition is not material to our results of operations. 2017 Acquisitions The following table summarizes the purchase prices and purchase price allocations for the acquisitions completed during the year ended December 31, 2017. A description of the acquired businesses is summarized below the table. Acquired company YouTrain CLS Emantras McKinney Rogers Acquisition date 8/31/2017 8/31/2017 4/1/2017 2/1/2017 Cash purchase price $ 4,898 $ 436 $ 3,191 $ 3,259 Fair value of contingent consideration — 888 220 4,505 Working capital adjustment 180 — — — Total purchase price $ 5,078 $ 1,324 $ 3,411 $ 7,764 Purchase price allocation: Cash $ 673 $ — $ — $ — Accounts receivable and other assets 234 — — — Fixed assets 215 — 50 — Technology-related intangible assets — — — 2,704 Customer-related intangible assets 1,313 253 818 653 Marketing-related intangible assets (tradename) — — — 121 Goodwill 3,268 1,090 3,156 5,196 Total assets 5,703 1,343 4,024 8,674 Accounts payable and accrued expenses 348 19 558 44 Deferred revenue 28 — 55 866 Deferred tax liability 249 — — — Total liabilities 625 19 613 910 Net assets acquired $ 5,078 $ 1,324 $ 3,411 $ 7,764 YouTrain On August 31, 2017, we acquired the entire share capital of YouTrain Limited ("YouTrain"), an independent training company delivering IT, digital and life sciences skills training in Scotland and North West England. The upfront purchase price was $4.9 million which was paid in cash at closing and a completion accounts payment of $0.2 million was paid to the sellers during the fourth quarter of 2017. The purchase price allocation for the acquisition includes $ 1.3 million of a customer-related intangible asset which is being amortized over five years from the acquisition date. The goodwill recognized is due to the expected synergies from combining the operations of the acquiree with the Company. None of the goodwill recorded for financial statement purposes is deductible for tax purposes. The acquired YouTrain business is included in the Workforce Excellence segment and the results of its operations have been included in the consolidated financial statements beginning September 1, 2017. The pro-forma impact of the acquisition is not material to our results of operations. The acquired YouTrain business is included in our acquiring United Kingdom subsidiary and its functional currency is the British Pound Sterling. CLS Performance Solutions Limited On August 31, 2017, we acquired the business and certain assets of CLS Performance Solutions Limited ("CLS"), an independent provider of Enterprise Resource Planning (ERP) end user adoption and training services in the United Kingdom. The upfront purchase price was $0.4 million which was paid in cash at closing. In addition, the purchase agreement required up to an additional $2.2 million of consideration contingent upon the achievement of certain earnings targets during the twelve-month period following the completion of the acquisition. No contingent consideration was payable as the earnings target was not achieved for the twelve-month period subsequent to the acquisition. The purchase price allocation for the acquisition includes $ 0.3 million of a customer-related intangible asset which is being amortized over three years from the acquisition date. The goodwill recognized is due to the expected synergies from combining the operations of the acquiree with the Company. None of the goodwill recorded for financial statement purposes is deductible for tax purposes. The acquired CLS business is included in the Business Transformation Services segment, and the results of its operations have been included in the consolidated financial statements beginning September 1, 2017. The pro-forma impact of the acquisition is not material to our results of operations. The acquired CLS business is included in our acquiring United Kingdom subsidiary and its functional currency is the British Pound Sterling. Emantras Effective April 1, 2017, we acquired the business and certain assets of Emantras, a digital education company that provides engaging learning experiences and effective knowledge delivery through award-winning digital and mobile solutions with offices in Fremont, California and Chennai, India. This acquisition strengthens our eLearning development capabilities, allowing us to better serve our customer base with the latest digital learning solutions. The upfront purchase price was $3.2 million in cash. In addition, the purchase agreement required up to an additional $0.3 million of consideration, contingent upon the achievement of an earnings target during the twelve-month period following completion of the acquisition, plus a percentage of any earnings in excess of the specified earnings target. No contingent consideration was paid as the earnings target for the twelve-month period subsequent to the acquisition was not achieved. The purchase price allocation for the acquisition includes $0.8 million of a customer-related intangible asset which is being amortized over four years from the acquisition date. The goodwill recognized is due to the expected synergies from combining the operations of the acquiree with the Company. We expect that a portion of the goodwill recorded for financial statement purposes will be deductible for tax purposes. In addition, contingent consideration is only deductible when paid. If the actual contingent consideration payments are less than the estimated fair value as of the acquisition date, a portion of goodwill will not be deductible for tax purposes. The acquired Emantras business is included in the Workforce Excellence segment, and the results of its operations have been included in the consolidated financial statements beginning April 1, 2017. The pro-forma impact of the acquisition is not material to our results of operations. The India-based operations of the acquired Emantras business is included in our India subsidiary and its functional currency is the Indian Rupee. McKinney Rogers On February 1, 2017, we acquired the business and certain assets of McKinney Rogers, a provider of strategic consulting services with offices in New York and London. This acquisition will expand our solutions offerings, giving us the ability to leverage McKinney Rogers' intellectual property and consulting methodologies to help our global client base meet strategic business goals. The upfront purchase price was $3.3 million in cash. In addition, the purchase agreement required up to an additional $18.0 million of consideration, $6.0 million of which was contingent upon the achievement of certain earnings targets during the five -month period ended April 30, 2017 and $12.0 million of which is contingent upon the achievement of certain earnings targets during the three twelve-month periods following completion of the acquisition. In 2017, we paid the seller $1.0 million in respect of the contingent consideration for the five-month period ended April 30, 2017. No contingent consideration was payable with respect to the first twelve-month period following completion of the acquisition as the earnings target was not achieved. The purchase price allocation for the acquisition includes $ 2.7 million of a technology-related intangible asset and $ 0.7 million of a customer-related intangible asset which are both being amortized over five years and $0.1 million of a marketing-related intangible asset which is being amortized over three years from the acquisition date. The goodwill recognized is due to the expected synergies from combining the operations of the acquiree with the Company. We expect that a portion of the goodwill recorded for financial statement purposes will be deductible for tax purposes. In addition, contingent consideration is only deductible when paid. If the actual contingent consideration payments are less than the estimated fair value as of the acquisition date, a portion of goodwill will not be deductible for tax purposes. The acquired McKinney Rogers business is included in the Business Transformation Services segment, and the results of its operations have been included in the consolidated financial statements beginning February 1, 2017. The pro-forma impact of the acquisition is not material to our results of operations. 2016 Acquisitions Jencal Training On March 1, 2016, we acquired the share capital of Jencal Training Limited (Jencal Training) and its subsidiary B2B Engage Limited (B2B), an independent provider of vocational skills training in the United Kingdom. The upfront purchase price was $2.5 million in cash. In addition, we paid an additional $0.2 million of deferred consideration in the fourth quarter of 2016. The purchase price allocation for the acquisition primarily includes $1.4 million of a customer-related intangible asset which is being amortized over four years from the acquisition date and $1.8 million of goodwill. None of the goodwill recorded for financial statement purposes is deductible for tax purposes. The acquired Jencal Training business is included in the Workforce Excellence segment and the results of its operations have been included in the consolidated financial statements beginning March 1, 2016. The pro-forma impact of the acquisition is not material to our results of operations. Maverick Solutions Effective October 1, 2016, we acquired the business and certain assets of Maverick Solutions, a U.S.-based provider of Enterprise Resource Planning (ERP) product training services. The upfront purchase price was $4.6 million in cash. In addition, the purchase agreement required up to an additional $10.0 million of consideration, contingent upon the achievement of certain earnings targets during the two twelve-month periods following completion of the acquisition. We paid $4.1 million of contingent consideration during the fourth quarter of 2017 in respect of the first twelve-month period ended September 30, 2017. No contingent consideration was payable in respect of the second twelve-month period ended September 30, 2018 as the earnings target was not achieved. We expect that all of the goodwill recorded for financial statement purposes will be deductible for tax purposes, except that contingent consideration is only deductible when paid. If the actual contingent consideration payments are less than the estimated fair value as of the acquisition date, a portion of goodwill will not be deductible for tax purposes. The acquired Maverick Solutions business is included in the Business Transformation Services segment and the results of its operations have been included in the consolidated financial statements beginning October 1, 2016. The pro-forma impact of the acquisition is not material to our results of operations. The following table summarizes the purchase price and purchase price allocation for the acquisition (dollars in thousands). Cash purchase price $ 4,639 Fair value of contingent consideration 5,166 Total purchase price $ 9,805 Amortization Purchase price allocation: Period Fixed assets $ 63 Customer-related intangible assets 1,219 4 years Marketing-related intangible assets (tradename) 124 2 years Technology-related intangible assets 649 3 years Goodwill 8,111 Total assets 10,166 Accrued expenses 38 Deferred revenue 323 Total liabilities 361 Net assets acquired $ 9,805 Contingent Consideration Contingent consideration is recognized at fair value on the acquisition date and is re-measured each reporting period with subsequent adjustments recognized in the consolidated statement of operations. We estimate the fair value of contingent consideration liabilities using an appropriate valuation methodology, typically either an income-based approach or a simulation model, such as the Monte Carlo model, depending on the structure of the contingent consideration arrangement. Contingent consideration is valued using significant inputs that are not observable in the market which are defined as Level 3 inputs pursuant to fair value measurement accounting. We believe our estimates and assumptions are reasonable; however, there is significant judgment involved. At each reporting date, the contingent consideration obligation is revalued to estimated fair value, and changes in fair value subsequent to the acquisitions are reflected in income or expense in the consolidated statements of operations, and could cause a material impact to, and volatility in, our operating results. Changes in the fair value of contingent consideration obligations may result from changes in discount periods and rates and changes in the timing and amount of revenue and/or earnings projections. Below is a summary of the potential maximum contingent consideration we may be required to pay in connection with completed acquisitions as of December 31, 2018 (dollars in thousands): Acquisition: Original range of potential undiscounted payments As of December 31, 2018 Maximum contingent consideration due in 2019 2020 Total IC Axon $0 - $3,500 $ 3,500 $ — $ 3,500 McKinney Rogers $0 - $18,000 4,000 4,000 8,000 $ 7,500 $ 4,000 $ 11,500 Below is a summary of the changes in the recorded amount of contingent consideration liabilities from December 31, 2017 to December 31, 2018 for each acquisition (dollars in thousands): Liability as of 2018 Additions Change in Fair Value of Contingent Foreign Currency 2018 Liability as of Acquisition: Dec. 31, 2017 Consideration Translation Dec. 31, 2018 IC Axon $ — 905 (311 ) — $ 594 Maverick $ 1,979 — (1,979 ) — — $ — McKinney Rogers 1,501 — (1,418 ) — — 83 Emantras 76 — (76 ) — — — CLS 669 — (654 ) (15 ) — — $ 4,225 $ 905 $ (4,438 ) $ (15 ) — $ 677 As of December 31, 2018 and 2017 , contingent consideration included in accounts payable and accrued expenses on the consolidated balance sheet totaled $0.6 million and $2.7 million , respectively. As of December 31, 2018 and 2017 , we also had accrued contingent consideration totaling $0.1 million and $1.5 million , respectively, which is included in other long-term liabilities on the consolidated balance sheet and represents the portion of contingent consideration estimated to be payable greater than twelve months from the balance sheet date.

Goodwill & Other Intangible Ass

Goodwill & Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill & Other Intangible Assets Goodwill Changes in the carrying amount of goodwill by reportable business segment for the years ended December 31, 2018 and 2017 were as follows (in thousands): Business Workforce Transformation Excellence Services Total Net book value at January 1, 2017 Goodwill $ 104,345 $ 38,844 $ 143,189 Accumulated impairment losses (9,050 ) (6,367 ) (15,417 ) Total 95,295 32,477 127,772 2017 Activity: Acquisitions 6,424 6,286 12,710 Foreign currency translation 4,045 308 4,353 Net book value at December 31, 2017 Goodwill 114,814 45,438 160,252 Accumulated impairment losses (9,050 ) (6,367 ) (15,417 ) Total 105,764 39,071 144,835 2018 Activity: Acquisitions 21,613 14,033 35,646 Foreign currency translation (3,459 ) (898 ) (4,357 ) Net book value at December 31, 2018 Goodwill 132,968 58,573 191,541 Accumulated impairment losses (9,050 ) (6,367 ) (15,417 ) Total $ 123,918 $ 52,206 $ 176,124 Intangible Assets Subject to Amortization Intangible assets with finite lives are subject to amortization over their estimated useful lives. The primary assets included in this category and their respective balances were as follows (in thousands): December 31, 2018 Gross Carrying Accumulated Net Carrying Amount Amortization Amount Customer relationships $ 26,524 $ (8,547 ) $ 17,977 Intellectual property and other 4,936 (1,980 ) 2,956 $ 31,460 $ (10,527 ) $ 20,933 December 31, 2017 Customer relationships $ 16,330 $ (11,140 ) $ 5,190 Intellectual property and other 4,298 (1,125 ) 3,173 $ 20,628 $ (12,265 ) $ 8,363 Amortization expense for intangible assets was $4.6 million , $4.0 million and $3.5 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Estimated future amortization expense for intangible assets included in our consolidated balance sheet as of December 31, 2018 is as follows (in thousands): Fiscal year ending: 2019 $ 4,968 2020 3,844 2021 3,211 2022 2,027 2023 1,799 Thereafter 5,084 Total $ 20,933 As of December 31, 2018 , our intangible assets with definite lives had a weighted average remaining useful life of 6.2 years . We have no amortizable intangible assets with indefinite useful lives.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment consisted of the following (in thousands): December 31, 2018 2017 Machinery, equipment and vehicles $ 18,121 $ 16,078 Furniture and fixtures 3,779 3,090 Leasehold improvements 2,369 1,967 Buildings 311 331 24,580 21,466 Accumulated depreciation and amortization (18,721 ) (16,343 ) $ 5,859 $ 5,123 Depreciation expense was $2.2 million , $2.6 million and $2.9 million for the years ended December 31, 2018 , 2017 and 2016 , respectively.

Accounts Payable and Accrued Ex

Accounts Payable and Accrued Expenses	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Accounts Payable and Accrued Expenses	Accounts Payable and Accrued Expenses Accounts payable and accrued expenses consisted of the following (in thousands): December 31, 2018 2017 Trade accounts payable $ 40,969 $ 24,189 Accrued salaries, vacation and benefits 21,550 22,205 Other accrued expenses 28,372 26,256 Accrued contingent consideration 594 2,724 Negative cash book balance 1,769 2,906 $ 93,254 $ 78,280

Debt

Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt	Debt On November 30, 2018, we entered into a Credit Agreement with PNC Bank, National Association, as administrative agent and a syndicate of lenders (the “Credit Agreement”), replacing the prior credit agreement with Wells Fargo dated December 21, 2016, as amended on April 28, 2018 and June 29, 2018 (the "Original Credit Agreement"). The Credit agreement provides for a revolving credit facility, which expires on November 29, 2023, and consists of: a revolving loan facility with a borrowing limit of $ 200 million , including a $ 20 million sublimit for foreign borrowings; an accordion feature allowing the Company to request increases in commitments to the credit facility by up to an additional $ 100 million ; a $ 20 million letter of credit sublimit; and a swingline loan credit sublimit of $ 20 million . The obligations under the Credit Agreement are guaranteed by certain of the Company's subsidiaries (the "Guarantors"). As collateral security under the Credit Agreement and the guarantees thereof, the Company and the Guarantors have granted to the administrative agent, for the benefit of the lenders, a lien on, and first priority security interest in substantially all of their tangible and intangible assets. The proceeds of the Credit Agreement were used, in part, to repay in full all outstanding borrowings under the Original Credit Agreement, and additional proceeds of the revolving credit facility are expected to be used for working capital and other general corporate purposes of the Company and its subsidiaries, including the issuance of letters of credit and Permitted Acquisitions, as defined. Borrowings under the Credit Agreement may be in the form of Base Rate loans or Euro-Rate loans, at the option of the borrowers, and bear interest at the Base Rate plus 0.25 % to 1.25 % or the Daily LIBOR Rate plus 1.25 % to 2.25 % respectively. Base Rate loans will bear interest at a fluctuating per annum Base Rate equal to the highest of (i) the Overnight Bank Funding Rate, plus 0.5 %, (ii) the Prime Rate, and (iii) the Daily LIBOR Rate, plus 100 basis points ( 1.0% ); plus an Applicable Margin. Determination of the Applicable Margin is based on a pricing grid that is generally dependent upon the Company's Leverage Ratio (as defined) as of the end of the fiscal quarter for which consolidated financial statements have been most recently delivered. We may prepay the revolving loan, in whole or in part, at any time without premium or penalty, subject to certain conditions. The Credit Agreement contains customary representations, warranties and affirmative covenants. The Credit Agreement also contains customary negative covenants, subject to negotiated exceptions, including but not limited to: (i) liens, (ii) investments, (iii) indebtedness, (iv) significant corporate changes, including mergers and acquisitions, (v) dispositions, (vi) restricted payments, including stock dividends, and (vii) certain other restrictive agreements. The Credit Agreement also requires the Company to maintain compliance with the following financial covenants; (i) a maximum leverage ratio, and (ii) a minimum interest expense coverage ratio. We were in compliance with each of these financial covenants under the Credit Agreement as of December 31, 2018 . As of December 31, 2018 , there were $116.5 million of borrowings outstanding and $16.8 million of available borrowings under the revolving loan facility based on our Leverage Ratio. For the years ended December 31, 2018 and 2017 , the weighted average interest rate on our borrowings was 4.0% and 2.8% , respectively. As of December 31, 2018 , the fair value of our borrowings under the Credit Agreement approximated its carrying value as it bears interest at variable rates. There were $1.2 million of unamortized debt issue costs related to the Credit Agreement as of December 31, 2018 which are being amortized to interest expense over the term of the Credit Agreement and are included in Other assets on our consolidated balance sheet. In March 2017, we entered into an interest rate swap agreement which effectively fixed our interest rate on the remaining $37 million outstanding on our term loan to a fixed LIBOR of 1.59% plus the applicable margin under the Credit Agreement. The interest rate swap, which expires on April 1, 2020, was designated as a cash flow hedge and hedge accounting was applied. In connection with the refinancing of our Credit Agreement and repayment of the outstanding balances under the term loan on November 30, 2018, we voluntarily terminated the related interest rate swap contract in December 2018 for cash proceeds of $ 0.1 million . During the year ended December 31, 2018, $0.1 million was reclassified from accumulated other comprehensive income (loss) into earnings and is included in interest expense in our consolidated statement of operations. In April 2017, we entered into an interest rate cap agreement and paid a premium of $0.5 million which capped the daily one-month LIBOR at 2.0% for an aggregate notional amount of $20.0 million of our variable rate debt under our prior credit facility. The interest rate cap agreement, which was due to mature on December 31, 2021, was designated as a cash flow hedge and hedge accounting was applied. In connection with the refinancing of our Credit Agreement and repayment of the outstanding borrowings under the prior credit facility on November 30, 2018, we voluntarily terminated the related interest rate cap contract in December 2018 for cash proceeds of $ 0.4 million . During the year ended December 31, 2018, less than $ 0.1 million was reclassified from accumulated other comprehensive income (loss) into earnings and is included in interest expense in our consolidated statement of operations.

Employee Benefit Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Employee Benefit Plan	Employee Benefit Plan We offer the GP Retirement Savings Plan (the “Plan”) to our employees in the United States. Eligible employees are automatically enrolled unless they elect to not participate in the Plan, and contributions begin as soon as administratively feasible after enrollment. The Plan permits pre-tax contributions to the Plan by participants pursuant to Section 401(k) of the Internal Revenue Code (IRC). We make matching contributions at our discretion. In 2018 , 2017 and 2016 , we contributed 162,572 , 104,751 , and 111,326 shares, respectively, of our common stock directly to the Plan which had a value of approximately $3.0 million , $2.7 million and $2.7 million , respectively, and is recognized as compensation expense in the consolidated statements of operations for matching contributions to the Plan. We also maintain several defined contribution pension schemes for our employees in the United States, United Kingdom and other countries. We contributed to these plans $2.7 million , $2.5 million and $2.2 million during the years ended December 31, 2018 , 2017 and 2016 , respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of income before income taxes and income tax expense for the years ended December 31, 2018 , 2017 and 2016 are as follows (in thousands): Years ended December 31, 2018 2017 2016 Income before income taxes: Domestic $ 5,577 $ 2,901 $ 13,988 Foreign 9,186 16,788 16,046 Total income before income taxes $ 14,763 $ 19,689 $ 30,034 Income tax expense (benefit): Current: Federal $ 388 $ 3,210 $ 5,511 State and local 378 256 1,152 Foreign 3,285 3,645 4,885 Total current 4,051 7,111 11,548 Deferred: Federal 813 (241 ) (1,039 ) State and local 258 (176 ) 56 Foreign (195 ) 104 (778 ) Total deferred 876 (313 ) (1,761 ) Total income tax expense $ 4,927 $ 6,798 $ 9,787 The provision for income taxes differs from the amount computed by applying the statutory federal income tax rate to income before income taxes. The sources and tax effects of the differences are as follows: December 31, 2018 2017 2016 Federal income tax rate 21.0 % 35.0 % 35.0 % State and local taxes net of federal benefit 1.9 0.2 2.4 Domestic production deduction — (1.1 ) (0.6 ) Foreign tax rate differential 1.8 (8.8 ) (5.8 ) Permanent differences 2.7 (6.2 ) 4.8 Other 2.6 (0.9 ) (3.2 ) Global Intangible Low-taxed Income 1.5 — — Tax Cuts and Jobs Act of 2017 1.9 16.3 — Effective tax rate 33.4 % 34.5 % 32.6 % On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the “2017 Tax Act”) was signed into law making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of December 31, 2017. The Company recognized the tax effects of the 2017 Tax Act in the year ended December 31, 2017 and recorded $3.2 million in income tax expense. The provisional tax benefit amount recorded related to the remeasurement of certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future was $1.4 million . The provisional amount recorded related to the one-time transition tax on the mandatory deemed repatriation of foreign earnings was $4.6 million . On December 22, 2017, the SEC issued Staff Accounting Bulletin No. 118 ("SAB 118") to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the 2017 Tax Act. The Company applied the guidance in SAB 118 when accounting for the enactment-date effects of the 2017 Tax Act in 2017 and throughout 2018. At December 31, 2018, we have completed our accounting for all the enactment-date income tax effects of the 2017 Tax Act. We increased our year ended December 31, 2017 tax expense related to the mandatory deemed repatriation of foreign earnings of $4.6 million to $4.9 million . No adjustment is required to the tax benefit of $1.4 million recorded for the year ended December 31, 2017, related to the remeasurement of certain deferred tax assets and liabilities. The 2017 Tax Act creates a requirement that Global Intangible Low-Taxed Income (“GILTI”) earned by a controlled foreign corporation (“CFC”) must be included in the gross income of the U.S. shareholder. The FASB Staff Q&A Topic 740, No. 5, “Accounting for Global Intangible Low-Taxed Income” states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis difference expected to reverse as GILTI in future years, or to provide for the tax expense related to GILTI in the year the tax is incurred as a period expense only. The Company has elected to account for GILTI as a current period expense when incurred. Income tax expense was $ 4.9 million for the year ended December 31, 2018 compared to $ 6.8 million for the year ended December 31, 2017 . Our effective income tax rate was 33.4% and 34.5% for the years ended December 31, 2018 and 2017 , respectively. The decrease in the effective income tax rate compared to 2017 is primarily due to the non-recurring unfavorable effect of the 2017 Tax Act on the Company’s 2017 effective tax rate. Uncertain Tax Positions As of December 31, 2018 and 2017 , we had no uncertain tax positions reflected on our consolidated balance sheet. The Company files income tax returns in U.S. federal, state and local jurisdictions, and various non-U.S. jurisdictions, and is subject to audit by tax authorities in those jurisdictions. Tax years 2015 through 2018 remain open to examination by these tax jurisdictions, and earlier years remain open to examination in certain of these jurisdictions which have longer statutes of limitations. Deferred Income Taxes Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for tax purposes. Significant components of our deferred tax assets and liabilities are as follows (in thousands): December 31, 2018 2017 Deferred tax assets: Allowance for doubtful accounts $ 531 $ 559 Accrued liabilities and other 2,564 2,381 Stock-based compensation expense 296 599 Net federal, state and foreign operating loss carryforwards 1,953 1,432 Foreign tax credit carryforwards 266 — Deferred tax assets 5,610 4,971 Valuation allowance on deferred tax assets (1,385 ) (1,502 ) Deferred tax liabilities: Other 1,181 208 Intangible assets, property and equipment, principally due to difference in depreciation and amortization 10,784 5,312 Net deferred tax liabilities $ (7,740 ) $ (2,051 ) As of December 31, 2018 , we had foreign and U.S. state net operating loss carryforwards of $8.8 million for tax purposes, which will be available to offset future taxable income. If not used, these carryforwards will expire beginning in 2019. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets may not be realized. The ultimate realization of the deferred tax assets is dependent upon the generation of future taxable income during the periods in which temporary differences are deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. Based upon these factors, management placed a valuation allowance of $1.4 million and $1.5 million as of the years ended December 31, 2018 and 2017 , respectively, against certain deferred tax assets, including net operating loss carryforwards, due to the uncertainty of future profitability in foreign jurisdictions. Management believes it is more likely than not that the Company will realize the benefits of the remaining deferred tax assets. Foreign Income The 2017 Tax Act includes a mandatory one-time tax on accumulated earnings of foreign subsidiaries, and as a result, all previously unremitted earnings for which no U.S. deferred tax liability had been accrued have now been subject to U.S. tax. Notwithstanding the U.S. taxation of these amounts, we intend to continue to invest these earnings, as well as the capital invested in these subsidiaries, indefinitely outside of the U.S. and do not expect to incur any significant, additional taxes related to such amounts. The Company has not provided for any additional outside basis difference inherent in its foreign subsidiaries, as these amounts continue to be indefinitely reinvested in foreign operations. Determining the amount of unrecognized deferred tax liability related to any additional outside basis difference in these entities is not practicable.

Restructuring (Notes)

Restructuring (Notes)	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring The following table shows the balances and activity for our restructuring liability (in thousands): Employee Severance and Related Benefits Excess Facilities and Other Costs Total Liability as of December 31, 2017 $ 2,840 $ — $ 2,840 Additional restructuring charges 1,678 1,252 2,930 Payments (3,252 ) (661 ) (3,913 ) Liability as of December 31, 2018 $ 1,266 $ 591 $ 1,857 In December 2017, we announced a new organizational structure and plan to improve operating results by increasing organic growth and reducing operating costs. Effective January 1, 2018, we are organized into two global segments aligned by complementary service lines and supported by a new business development organization aligned by industry sector. The Workforce Excellence segment includes the majority of the existing Learning Solutions segment and the Professional & Technical Services segment. The Business Transformation Services segment includes the majority of the Performance Readiness Solutions segment and the Sandy Training & Marketing segment. Certain business units transferred between the existing operating segments to better align with the service offerings of the two new segments. During the fourth quarter of 2017, we initiated restructuring and transition activities to improve operational efficiency, reduce costs and better position the company to drive future revenue growth. We recorded severance expense of $3.3 million for the year ended December 31, 2017 which is included in Restructuring charges on the consolidated statements of operations. The total remaining liability under these restructuring activities was $2.8 million as of December 31, 2017, of which $2.2 million is included in accounts payable and accrued expenses and $0.6 million is included in other noncurrent liabilities on the consolidated balance sheet. For the year ended December 31, 2018 , we recorded an additional $ 2.9 million of restructuring charges which are included in Restructuring charges on the consolidated statements of operations. The total remaining liability under these restructuring activities was $ 1.9 million as of December 31, 2018 , of which $ 1.5 million is included in accounts payable and accrued expenses and $0.4 million is included in other noncurrent liabilities on the consolidated balance sheet. These restructuring activities were substantially complete as of June 30, 2018.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation Under our 2011 Stock Incentive Plan (the "2011 Plan"), we may grant awards of non-qualified stock options, incentive stock options, restricted stock, stock units, performance shares, performance units and other incentives payable in cash or in shares of our common stock to officers, employees or members of the Board of Directors. We are authorized to grant an aggregate of 1,355,764 shares under the 2011 Plan. As of December 31, 2018 , there were 444,669 shares available for issuance of future grants of awards under the 2011 Plan and 399,716 shares representing outstanding awards under the 2011 Plan. We may issue new shares or use shares held in treasury to deliver shares to employees for our equity grants or upon exercise of non-qualified stock options. The following table summarizes the pre-tax stock-based compensation expense included in reported net income (in thousands): Years ended December 31, 2018 2017 2016 Cost of revenue $ 992 $ 2,832 $ 2,545 General and administrative expenses 358 757 684 Total stock-based compensation expense $ 1,350 $ 3,589 $ 3,229 We recognized a deferred income tax benefit of $0.3 million , $1.2 million and $1.2 million , respectively, during the years ended December 31, 2018 , 2017 , and 2016 associated with the compensation expense recognized in our consolidated financial statements. As of December 31, 2018 , we had restricted stock units outstanding under these plans as discussed below. Non-Qualified Stock Options Non-qualified stock options are granted with an exercise price not less than the fair market value of our common stock at the date of grant, vest over a period up to ten years, and expire at various terms up to ten years from the date of grant. Summarized information for our non-qualified stock options is as follows: Stock Options Number of options Weighted average exercise price Weighted average remaining contractual term Aggregate intrinsic value Outstanding at December 31, 2017 3,000 $ 19.38 Granted — — Exercised (500 ) 19.38 Forfeited — — Expired (2,500 ) 19.38 Outstanding at December 31, 2018 — $ — 0.00 $ — Exercisable at December 31, 2018 — $ — 0.00 $ — We received cash for the exercise price associated with stock options exercised of less than $ 0.1 million during the year ended December 31, 2018 and $0.1 million during each of the years ended December 31, 2017 and 2016 . During the years ended December 31, 2017 and 2016 we settled 55,050 and 30,700 outstanding stock options, respectively, held by our employees by issuing 13,482 and 9,976 fully vested shares, respectively, which represented the fair value of those stock options upon settlement, net of required income tax withholdings. The total intrinsic value realized by participants on stock options exercised and/or settled was less than $0.1 million , $0.7 million and $0.5 million during the years ended December 31, 2018 , 2017 and 2016 , respectively. During the year ended December 31, 2018 , 2017 and 2016, we realized excess income tax benefits (deficiencies) of $ (0.3) million $0.1 million and $0.1 million , respectively, related to stock option exercises or expirations and restricted stock vesting. As discussed in Note 1, upon adoption of ASU 2016-09 effective January 1, 2017, the excess tax benefits and deficiencies are recognized in income tax expense on our consolidated statements of operations. For 2016, the income tax benefits are reflected as an increase to additional paid-in capital on the consolidated statements of stockholders’ equity. Restricted Stock Units In addition to stock options, we issue restricted stock units to key employees and members of the Board of Directors based on meeting certain service goals. The stock units vest to the recipients at various dates, up to five years , based on fulfilling service requirements. We recognize the value of the market price of the underlying stock on the date of grant to compensation expense over the requisite service period. Upon vesting, the stock units are settled in shares of our common stock. Summarized share information for our restricted stock units is as follows: Year ended December 31, 2018 Weighted average grant date fair value (In shares) (In dollars) Outstanding and unvested, beginning of period 148,234 $ 26.79 Granted 77,712 17.96 Vested (87,970 ) 27.92 Forfeited (5,223 ) 25.77 Outstanding and unvested, end of period 132,753 $ 20.91 The total intrinsic value realized by participants upon the vesting of restricted stock units was $1.3 million , $2.7 million and $1.8 million during the years ended December 31, 2018 , 2017 and 2016 , respectively. As of December 31, 2018 , we had unrecognized compensation cost of $1.8 million related to the unvested portion of our outstanding restricted stock units to be recognized over a weighted average remaining service period of 2.1 years . We have a long-term incentive program (LTIP) which provides for the issuance of performance-based and time-based restricted stock units under the 2011 Plan to certain executives. Under the LTIP, a target level of equity compensation is set for each officer. The total equity compensation is divided into performance-based and time-based restricted stock units. Under the program, it is expected that the Compensation Committee will set the performance-based goals within the first 90 days of each year. Vesting of the performance-based stock units (PSU's) is contingent upon the employee's continued employment and the Company's achievement of certain performance goals during a three-year performance period. The performance goals are established by the Compensation Committee for a three-year performance period based on certain financial targets. We recognize compensation expense, net of estimated forfeitures, for PSU's on a straight-line basis over the performance period based on the probable outcome of achievement of the financial targets. At the end of each reporting period, we estimate the number of PSU's expected to vest, based on the probability and extent to which the performance goals will be met, and take into account these estimates when calculating the expense for the period. If the number of shares expected to be earned changes during the performance period, we make a cumulative adjustment to compensation expense based on the revised number of shares expected to be earned. Summarized share information for our performance-based restricted stock units is as follows: Year ended December 31, 2018 Weighted average grant date fair value (In shares) (In dollars) Outstanding and unvested, beginning of period 189,068 $ 27.68 Granted 141,851 22.55 Vested — — Forfeited (63,956 ) 32.50 Outstanding and unvested, end of period 266,963 $ 23.80 As of December 31, 2018 , we had unrecognized compensation cost of $ 0.2 million related to the unvested portion of our outstanding restricted stock units to be recognized over a weighted average remaining service period of 2.0 years .

Common Stock

Common Stock	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Common Stock	Common Stock The holders of common stock are entitled to one vote per share. As of December 31, 2018 , there were 16,619,740 shares of common stock issued and outstanding. In addition, as of December 31, 2018 , there were 399,716 shares reserved for issuance under outstanding equity compensation awards for unvested restricted stock units and an additional 444,669 shares available for issuance for future grants of awards under the 2011 Plan. Stock Repurchase Program We have a share repurchase program under which we may repurchase shares of our common stock from time to time in the open market, subject to prevailing business and market conditions and other factors. During the years ended December 31, 2018 , 2017 and 2016 , we repurchased approximately 354,000 , 182,000 and 340,000 shares, respectively, of our common stock in the open market for a total cost of approximately $8.0 million , $4.3 million and $8.0 million , respectively. As of December 31, 2018 , there was approximately $3.8 million available for future repurchases under the buyback program. There is no expiration date for the repurchase program. Securities Purchase Agreement On December 30, 2009, we entered into a Securities Purchase Agreement (the “Purchase Agreement”) with a single accredited investor, Sagard Capital Partners, L.P. (“Sagard”), pursuant to which we sold to Sagard, in a private placement, an aggregate of 2,857,143 shares (the “Shares”) of our common stock, par value $0.01 , at a price of $7.00 per share (the “Offering”), for an aggregate purchase price of $20.0 million . The Offering closed on December 30, 2009. The Purchase Agreement prohibits Sagard from acquiring beneficial ownership of more than 23% of our common stock (calculated on a fully diluted basis). As of December 31, 2018 , Sagard beneficially owned 3,639,367 shares or 21.9% of our outstanding common stock. In connection with the Offering, on December 30, 2009, we entered into a Registration Rights Agreement (the “Registration Rights Agreement”) with Sagard. Pursuant to the Registration Rights Agreement, we filed a registration statement with the Securities and Exchange Commission (the “SEC”) for purposes of registering the resale of the Shares and any shares of common stock issued pursuant to the preemptive rights under Section 4(l) of the Purchase Agreement (or any shares of common stock issuable upon exercise, conversion or exchange of securities issued pursuant to the preemptive rights). We filed the registration statement with the SEC on September 27, 2010 and it was declared effective by the SEC on October 8, 2010. If we fail to meet filing or effectiveness deadlines with respect to any additional registration statements required by the Registration Rights Agreement, or fail to keep any registration statements continuously effective (with limited exceptions), we will be obligated to pay to the holders of the Shares liquidated damages in the amount of 1% of the purchase price for the Shares per month, up to a maximum of $2.4 million . We also agreed, among other things, to indemnify the selling holders under the registration statements from certain liabilities and to pay all fees and expenses (excluding underwriting discounts and selling commissions and all legal fees of the selling holders in excess of $25,000 ) incident to our obligations under the Registration Rights Agreement.

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Business Segments	Business Segments For the year ended December 31, 2018 , we operated through two reportable business segments: (i) Workforce Excellence and (ii) Business Transformation Services. In December 2017, we announced a new organizational structure and plan to improve operating results by increasing organic growth and reducing operating costs. Effective January 1, 2018, we re-organized into two operating segments aligned by complementary service lines and supported by a new business development organization aligned by industry sector. The Workforce Excellence segment includes the majority of the former Learning Solutions and Professional & Technical Services segments. The Business Transformation Services segment includes the majority of the former Performance Readiness Solutions and Sandy Training & Marketing segments. Certain business units transferred between the former operating segments to better align with the service offerings of the two new segments. In addition, effective July 1, 2018, we transferred the management responsibility of certain additional business units between the two operating segments primarily to consolidate our non-technical content design and development businesses into one global digital learning strategies and solutions service line. We have reclassified the segment financial information herein for the prior year periods to reflect the changes in our segment reporting during 2018 and conform to the current year's presentation. Each of our two reportable segments represents an operating segment under ASC Topic 280, Segment Reporting . We test our goodwill at the reporting unit level, or one level below an operating segment, under ASC Topic 350, Intangibles - Goodwill and Other . In connection with the new organizational structure that went into effect on January 1, 2018, we determined that we have four reporting units for purposes of goodwill impairment testing, which represent our four practices which are one level below the operating segments, as discussed below. Our two segments each consist of two global practice areas which are focused on providing similar and/or complementary products and services across our diverse customer base and within targeted markets. Within each practice are various service lines having specific areas of expertise. Marketing and communications, sales, accounting, finance, legal, human resources, information systems and other administrative services are organized at the corporate level. Business development and sales resources are aligned by industry sector to support existing customer accounts and new customer development across both segments. Further information regarding our business segments is discussed below. Workforce Excellence. The Workforce Excellence segment advises and partners with leading organizations in designing, implementing, operating and supporting their talent management and workforce strategies, enabling them to gain greater competitive edge in their markets. This segment consists of two practices: • Managed Learning Services - this practice focuses on creating value for our customers by delivering a suite of talent management and learning design, development, operational and support services that can be delivered as large scale outsourcing arrangements, managed services contracts and project-based service engagements. The Managed Learning Services offerings include strategic learning and development consulting services, digital learning content design and development solutions and a suite of managed learning operations services, including: managed facilitation and delivery, managed training administration and logistics, help desk support, tuition reimbursement management services, event management and vendor management. • Engineering & Technical Services - this practice focuses on capital intensive, inherently hazardous and/or highly complex technical services in support of both U.S. government and global commercial industries. Our products and services include design, development and delivery of technical work-based learning, CapEx (plant launch) initiatives, engineering design and construction management, fabrication, and management services, operational excellence consulting, chemical demilitarization services, homeland security services, emergency management support services along with all forms of technical documentation. We deliver world-class asset management and performance improvement consulting to a host of industries. Our proprietary EtaPRO® Performance and Condition Monitoring System provides a suite of real-time digital solutions for hundreds of facilities and is installed in power-generating units around the world. We also provide thousands of technical courses in a web-based off the shelf delivery format through our GPiLEARN+™ portal. Business Transformation Services. The Business Transformation Services segment works with organizations to execute complex business strategies by linking business systems, process and people’s performance to clear and measurable results. We have a holistic methodology to establishing direction and closing the gap between strategy and execution. Our approach equips business leaders and teams with the tools and capability to deliver high-performance results. This segment consists of two practices: • Sales Enablement - this practice provides custom product sales training and service technical training, primarily to automotive manufacturers, designed to better educate the customer salesforces as well as the service technicians with respect to new product features and designs, in effect rapidly increasing the salesforce and technicians knowledge base and enabling them to address retail customer needs. Furthermore, this segment helps our clients assess their customer relationship marketing strategy and connect with their customers on a one-to-one basis, including custom print and digital publications. We have been a custom product sales and service technical training provider and leader in serving manufacturing customers in the U.S. automotive industry for over 40 years. • Organizational Development - this practice works with organizations to design and execute an integrated people performance system. This translates to helping organizations set strategy, carry that strategy through every level of the organization and ensure that their people have the right skills, knowledge, tools, processes and technology to enable the transformation and achieve business results. Solutions include strategy, leadership, employee engagement and culture consulting, enterprise technology implementation and adoption solutions, and organization design and business performance consulting. We do not allocate the following items to the segments: general & administrative expenses, sales & marketing expenses, restructuring charges, other (expense) income, interest expense, gain (loss) on change in fair value of contingent consideration and income tax expense. The following table sets forth the revenue and operating results attributable to each reportable segment and includes a reconciliation of segment revenue to consolidated revenue and operating results to consolidated income before income tax expense (in thousands): Years ended December 31, 2018 2017 2016 Revenue: Workforce Excellence $ 316,814 $ 308,259 $ 305,915 Business Transformation Services 198,346 200,949 184,644 $ 515,160 $ 509,208 $ 490,559 Gross Profit: Workforce Excellence $ 50,875 $ 52,958 $ 53,355 Business Transformation Services 26,868 29,069 26,802 Total gross profit 77,743 82,027 80,157 General and administrative expenses 54,848 55,753 47,162 Sales and marketing expenses 4,798 1,666 1,435 Restructuring charges 2,930 3,317 — Gain (loss) on change in fair value of contingent consideration, net 4,438 1,620 (136 ) Operating income 19,605 22,911 31,424 Interest expense 2,945 3,132 1,568 Other (expense) income (1,897 ) (90 ) 178 Income before income tax expense $ 14,763 $ 19,689 $ 30,034 Additional information relating to our business segments is as follows (in thousands): December 31, 2018 2017 Identifiable assets: Workforce Excellence $ 283,039 $ 241,277 Business Transformation Services 151,699 123,730 Total assets $ 434,738 $ 365,007 Corporate and other assets which consist primarily of cash, other assets, and deferred tax assets and liabilities are allocated to the segments based on their respective percentage of consolidated revenues. Years ended December 31, 2018 2017 2016 Additions to property, plant and equipment: Workforce Excellence $ 1,321 $ 1,609 $ 685 Business Transformation Services 625 184 62 Corporate and other 888 941 655 $ 2,834 $ 2,734 $ 1,402 Depreciation and amortization: Workforce Excellence $ 3,664 $ 2,643 $ 3,116 Business Transformation Services 2,827 2,770 1,994 Corporate and other 1,430 1,561 1,352 $ 7,921 $ 6,974 $ 6,462 Information about our revenue in different geographic regions, which is attributable to our operations located primarily in the United States, United Kingdom and other countries is as follows (in thousands): Years ended December 31, 2018 2017 2016 United States $ 344,720 $ 350,632 $ 339,329 United Kingdom 92,059 100,466 93,017 Other 78,381 58,110 58,213 $ 515,160 $ 509,208 $ 490,559 Information about our total assets in different geographic regions is as follows (in thousands): December 31, 2018 2017 United States $ 280,097 $ 215,523 United Kingdom 72,048 75,862 Other 82,593 73,622 $ 434,738 $ 365,007

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Our financial instruments measured at fair value include interest rate derivatives and contingent consideration in connection with business combinations. The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and 2017 , and the level they fall within the fair value hierarchy (in thousands): Fair Value Fair Value December 31, Financial Instrument Financial Statement Classification Hierarchy 2018 2017 Contingent consideration Accounts payable and accrued expenses Level 3 $ 594 $ 2,724 Contingent consideration Other noncurrent liabilities Level 3 83 1,502 Interest rate swap agreement Other assets Level 2 — 88 Interest rate cap agreement Other assets Level 2 — 285 We enter into interest rate swap and interest rate cap agreements to manage our interest rate risk on the variable rate borrowings our Credit Agreement as discussed more fully in Note 6. The fair value of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. To comply with the provisions of ASC 820, we incorporate credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. Changes in the fair value of the interest rate swap agreements are recorded as a component of accumulated other comprehensive income or loss.

Commitments, Guarantees, and Co

Commitments, Guarantees, and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments, Guarantees, and Contingencies	Commitments, Guarantees, and Contingencies Commitments Operating Leases We have various noncancelable leases for real property and machinery and equipment. Such leases expire at various dates with, in some cases, options to extend their terms. Minimum rentals under long-term operating leases are as follows (in thousands): Fiscal year ending: Real property Machinery and equipment Total 2019 $ 9,727 $ 919 $ 10,646 2020 7,361 472 7,833 2021 5,264 256 5,520 2022 4,466 62 4,528 2023 3,864 34 3,898 Thereafter 8,671 — 8,671 Total $ 39,353 $ 1,743 $ 41,096 Certain of the leases contain provisions for rent escalation based on increases in a specified Consumer Price Index, real estate taxes and operating costs incurred by the lessor. Rent expense was approximately $10.9 million , $11.0 million and $9.8 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Other As of December 31, 2018 , we had five outstanding letters of credit totaling $3.7 million , which expire in 2019 through 2022. In addition, we have three outstanding performance bonds totaling $12.4 million for contracts to be completed in 2019.

Quarterly Information (unaudite

Quarterly Information (unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Information (unaudited)	Quarterly Information (unaudited) Our quarterly financial information has not been audited but, in management’s opinion, includes all adjustments necessary for a fair presentation. (In thousands) Three months ended Year ended 2018 March 31 June 30 September 30 December 31 December 31 Revenue $ 125,032 $ 133,691 $ 123,566 $ 132,871 515,160 Gross profit 17,679 22,573 19,199 18,292 77,743 Net income 2,632 3,575 3,244 385 9,836 Earnings per share: Basic $ 0.16 $ 0.22 $ 0.20 $ 0.02 $ 0.59 Diluted $ 0.16 $ 0.22 $ 0.20 $ 0.02 $ 0.59 2017 Revenue $ 122,447 $ 131,161 $ 124,097 $ 131,503 $ 509,208 Gross profit 19,388 22,435 18,646 21,558 82,027 Net income (loss) 4,086 5,863 3,281 (a) (339 ) (a) 12,891 Earnings (loss) per share: Basic $ 0.24 $ 0.35 $ 0.20 $ (0.02 ) $ 0.77 Diluted $ 0.24 $ 0.35 $ 0.19 $ (0.02 ) $ 0.76 The sum of the quarterly earnings per share amounts may not equal the total for the year due to the effects of rounding and dilution as a result of issuing common shares during the year. (a) Includes a $ 2.6 million gross profit reduction in the third quarter ended September 30, 2017 due to a contract performance dispute resulting in an increase in estimated costs to complete a project for a foreign oil and gas client. During the quarter ended December 31, 2017, the client terminated the contract and we incurred a $1.8 million loss in the fourth quarter of 2017, of which $0.5 million is reflected as a reduction to gross profit and $1.3 million is included in SG&A expense and represents a bad debt reserve relating to accounts receivable from the client.

Description of Business and S_2

Description of Business and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Business	Business GP Strategies Corporation is a global performance improvement solutions provider of training, digital learning solutions, management consulting and engineering services. References in this report to “GP Strategies,” the “Company,” “we” and “our” are to GP Strategies Corporation and its subsidiaries, collectively.
FASB Codification	FASB Codification We follow generally accepted accounting principles (“GAAP”) set by the Financial Accounting Standards Board (“FASB”). References to GAAP issued by the FASB in these footnotes are to the FASB Accounting Standards Codification, sometimes referred to as ASC.
Basis of Consolidation	Basis of Consolidation The consolidated financial statements include the operations of our wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.
Significant Customers and Concentration of Credit Risk	Significant Customers & Concentration of Credit Risk We have a market concentration of revenue in both the automotive sector and financial services & insurance sector. Revenue from the automotive industry accounted for approximately 23% , 22% and 22% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 , respectively. In addition, we have a concentration of revenue from a single automotive customer, which accounted for approximately 14% , 13% and 13% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 respectively. As of December 31, 2018 accounts receivable from a single automotive customer totaled $19.9 million , or 18% , of our consolidated accounts receivable balance. Revenue from the financial services and insurance industry accounted for approximately 19% , 20% and 21% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 , respectively. In addition, we have a concentration of revenue from a single financial services customer, which accounted for approximately 13% , 14% and 15% of our consolidated revenue for the years ended December 31, 2018 , 2017 and 2016 respectively. As of December 31, 2018 , billed and unbilled accounts receivable from a single financial services customer totaled $21.2 million , or 11% , of our consolidated accounts receivable and costs and unbilled revenue balances. No other single customer accounted for more than 10% of our consolidated revenue in 2018 or consolidated accounts receivable balance as of December 31, 2018 .
Cash and Cash Equivalents	Cash We maintain our cash balances in bank accounts at various financial institutions. Outstanding checks which have been issued but not presented to the banks for payment in excess of amounts on deposit may create negative book cash balances. We transfer cash on an as-needed basis to fund these items as they clear the bank in subsequent periods. Such negative cash balances are included in accounts payable and accrued expenses and totaled $1.8 million and $2.9 million as of December 31, 2018 and 2017 , respectively. Changes in negative book cash balances from period to period are reported as a financing activity in the consolidated statement of cash flows.
Allowance for Doubtful Accounts Receivable	Allowance for Doubtful Accounts Receivable Trade accounts receivable are recorded at invoiced amounts. We evaluate the collectability of trade accounts receivable based on a combination of factors. When we are aware that a specific customer may be unable to meet its financial obligations to us, such as in the case of bankruptcy filings or deterioration in the customer’s operating results or financial position, we evaluate the need to record a specific reserve for bad debt to reduce the related receivable to the amount we reasonably believe is collectible. We also record reserves for bad debt for all other customers based on a variety of factors, including the length of time the receivables are past due, historical collection experience and trends of past due accounts, write-offs and specific identification and review of past due accounts. Actual collections of trade receivables could differ from management’s estimates due to changes in future economic or industry conditions or specific customers’ financial conditions.
Foreign Currency Translation	Foreign Currency Translation The functional currencies of our international operations are the respective local currencies of the countries in which we operate. The translation of the foreign currency into U.S. dollars is performed for balance sheet accounts using current exchange rates in effect at the balance sheet date and for revenue and expense accounts using the weighted average exchange rates prevailing during the year. The unrealized gains and losses resulting from such translation are included as a component of comprehensive income. Transaction gains and losses arising from currency exchange rate fluctuations on transactions denominated in a currency other than the local functional currency are included in “Other income (expense)" on our Consolidated Statements of Operations.
Revenue Recognition	Revenue Recognition On January 1, 2018, we adopted FASB Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers ("Topic 606") and all the related amendments. The impact of adoption is discussed below under the "Recent Accounting Standards" section. Further information regarding our revenue recognition policy, including our full accounting policy description, can be found in Note 2. Contract Related Assets and Liabilities The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled revenue (contract assets), and deferred revenue (contract liabilities) on the consolidated balance sheet. Amounts charged to our clients become billable according to the contract terms, which usually consider the passage of time, achievement of milestones or completion of the project. When billings occur after the work has been performed, such unbilled amounts will generally be billed and collected within 60 to 120 days but typically no longer than over the next twelve months. When we advance bill clients prior to the work being performed, generally, such amounts will be earned and recognized in revenue within the next twelve months. These assets and liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Changes in the contract asset and liability balances during the twelve -month period ended December 31, 2018 were not materially impacted by any other factors, except for a significant increase in unbilled contract receivables as of December 31, 2018 compared to 2017 due to a delay in billings at the end of 2018 in connection with the implementation of a new ERP system in the fourth quarter of 2018.
Comprehensive Income	Comprehensive Income Comprehensive income consists of net income, foreign currency translation adjustments, and the change in fair value of interest rate derivatives, net of tax.
Other Current Assets	Other Current Assets Prepaid expenses and other current assets on our consolidated balance sheet include prepaid expenditures for goods or services before the goods are used or the services are received, inventories and work in progress on customer contracts. Prepaid expenses are charged to expense in the periods the benefits are realized. Inventories are stated at lower of cost or market. Provision is made to reduce excess and obsolete inventories to their estimated net realizable value.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are carried at cost (or fair value at acquisition date for assets obtained through business combinations). Major additions and improvements are capitalized, while maintenance and repairs which do not extend the lives of the assets are expensed as incurred. Gain or loss on the disposition of property, plant and equipment is recognized in operations when realized. Depreciation of property, plant and equipment is recognized on a straight-line basis over the following estimated useful lives: Class of assets Useful life Buildings and improvements 5 to 40 years Machinery, equipment, and furniture and fixtures 3 to 10 years Leasehold improvements Shorter of asset life or term of lease
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Long-lived assets, such as property, plant, and equipment, and intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized at the amount by which the carrying amount of the asset exceeds the fair value of the asset. Impairment of long-lived assets is assessed at the lowest level for which there are identifiable cash flows that are independent from other groups of assets. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and would no longer be depreciated.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Our intangible assets include amounts recognized in connection with acquisitions, including customer relationships, tradenames, technology and intellectual property. Intangible assets are initially valued at fair market value using generally accepted valuation methods appropriate for the type of intangible asset. Amortization is recognized on a straight-line basis over the estimated useful life of the intangible assets. Intangible assets with definite lives are reviewed for impairment if indicators of impairment arise. Except for goodwill, we do not have any intangible assets with indefinite useful lives. Goodwill represents the excess of costs over fair value of assets of businesses acquired. We review our goodwill for impairment annually as of October 1 and whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. We test goodwill at the reporting unit level. ASC 350 permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. Under ASC 350, an entity is not required to perform step one of the goodwill impairment test for a reporting unit if it is more likely than not that its fair value is greater than its carrying amount. For our annual goodwill impairment tests as of both October 1, 2018 and 2017 , we performed a quantitative step one goodwill impairment test and concluded that the fair values of each of our reporting units exceeded their respective carrying values. In the step one impairment test, we compare the fair value of each reporting unit to its carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, goodwill is not impaired and we are not required to perform further testing. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then we must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit's goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit’s assets and liabilities in a manner similar to a purchase price allocation, with any residual fair value allocated to goodwill. If the carrying value of a reporting unit's goodwill exceeds its implied fair value, then we record an impairment loss equal to the difference. Under the two-step impairment test, we determine the fair value of our reporting units using both an income approach and a market approach, and weigh both approaches to determine the fair value of each reporting unit. Under the income approach, we perform a discounted cash flow analysis which incorporates management’s cash flow projections over a five-year period and a terminal value is calculated by applying a capitalization rate to terminal year projections based on an estimated long-term growth rate. The five-year projected cash flows and calculated terminal value are discounted using a weighted average cost of capital (“WACC”) which takes into account the costs of debt and equity. The cost of equity is based on the risk-free interest rate, equity risk premium, industry and size equity premiums and any additional market equity risk premiums as deemed appropriate for each reporting unit. To arrive at a fair value for each reporting unit, the terminal value is discounted by the WACC and added to the present value of the estimated cash flows over the discrete five-year period. There are a number of other variables which impact the projected cash flows, such as expected revenue growth and profitability levels, working capital requirements, capital expenditures and related depreciation and amortization. Under the market approach, we perform a comparable public company analysis and apply revenue and earnings multiples from the identified set of companies to the reporting unit’s actual and forecasted financial performance to determine the fair value of each reporting unit. We evaluate the reasonableness of the fair value calculations of our reporting units by reconciling the total of the fair values of all of our reporting units to our total market capitalization, and adjusting for an appropriate control premium. In addition, we make certain judgments in allocating shared assets and liabilities to determine the carrying values for each of our reporting units. Determining the fair value of a reporting unit is judgmental in nature and involves the use of significant estimates and assumptions. These estimates and assumptions include revenue growth rates and operating margins used to calculate projected future cash flows, risk-adjusted discount rates, future economic and market conditions and determination of appropriate market comparables. We base our fair value estimates on assumptions we believe to be reasonable but that are unpredictable and inherently uncertain. Actual future results may differ from those estimates. In addition, we make certain judgments and assumptions in allocating shared assets and liabilities to determine the carrying values for each of our reporting units. The timing and frequency of our goodwill impairment tests are based on an ongoing assessment of events and circumstances that would indicate a possible impairment. We will continue to monitor our goodwill and intangible assets for impairment and conduct formal tests when impairment indicators are present.
Contingent Consideration for Business Acquisitions	Contingent Consideration for Business Acquisitions Acquisitions may include contingent consideration payments based on future financial measures of an acquired company. Contingent consideration is required to be recognized at fair value as of the acquisition date. We estimate the fair value of these liabilities using an appropriate valuation methodology, typically either an income-based approach or a simulation model, such as the Monte Carlo model, depending on the structure of the contingent consideration arrangement. At each reporting date, the contingent consideration obligation is revalued to estimated fair value and changes in fair value subsequent to the acquisition are reflected in income or expense in the consolidated statements of operations, and could cause a material impact to our operating results. Changes in the fair value of contingent consideration obligations may result from changes in discount periods and rates and changes in the timing and amount of revenue and/or earnings projections.
Other Assets	Other Assets Other assets primarily include an investment in a joint venture, certain software development costs, unamortized debt issuance costs relating to our revolving credit facility, and derivative assets associated with our interest rate swap and cap agreements. We account for a 10% interest in a joint venture partnership under the equity method of accounting because significant influence exists due to certain factors, including representation on the partnership’s Management Board and voting rights. We capitalize the cost of internal-use software in accordance with ASC Topic 350-40, Internal-Use Software . These costs consist of internal labor costs and payments made to third parties for software development and implementation and are amortized using the straight-line method over their estimated useful lives, ranging from three to eight years. We apply hedge accounting to our interest rate derivatives which are discussed in detail in Note 6. We amortize debt issuance costs to interest expense on a straight-line basis over the term of our revolving credit facility.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and for operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We establish accruals for uncertain tax positions taken or expected to be taken in a tax return when it is more likely than not (i.e., a likelihood of more than fifty percent) that the position would be sustained upon examination by tax authorities that have full knowledge of all relevant information. A recognized tax position is then measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement. Favorable or unfavorable adjustment of the accrual for any particular issue would be recognized as an increase or decrease to income tax expense in the period of a change in facts and circumstances. Interest and penalties related to income taxes are accounted for as income tax expense.
Earnings per Share	Earnings per Share Basic earnings per share (“EPS”) are computed by dividing earnings by the weighted average number of common shares outstanding during the periods. Diluted EPS reflects the potential dilution of common stock equivalent shares that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. Our dilutive common stock equivalent shares consist of stock options and restricted stock units outstanding under our stock-based incentive plans and are computed under the treasury stock method, using the average market price during the period. Performance-based restricted stock unit awards are included in the computation of diluted shares based on the probable outcome of the underlying performance conditions being achieved. The following table presents instruments which were not dilutive and were excluded from the computation of diluted EPS in each period, as well as the weighted average dilutive common stock equivalent shares which were included in the computation of diluted EPS:
Stock-based Compensation	Stock-Based Compensation Pursuant to our stock-based incentive plans which are described more fully in Note 11, we grant stock options, restricted stock units, performance-based stock units (PSU's) and equity to officers, employees, and members of the Board of Directors. We compute compensation expense for all equity-based compensation awards issued to employees using the fair-value measurement method. We recognize compensation expense on a straight-line basis over the requisite service period for stock-based compensation awards with both graded and cliff vesting terms. We recognize forfeitures as they occur with a reduction in compensation expense in the period of forfeiture. We do not capitalize any material portion of our stock-based compensation. We recognize compensation expense for PSU's on a straight-line basis over the performance period based on the probable outcome of achievement of the financial targets. At the end of each reporting period, we estimate the number of PSU's expected to vest, based on the probability and extent to which the performance goals will be met, and take into account these estimates when calculating the expense for the period. If the number of shares expected to be earned changes during the performance period, we will make a cumulative adjustment to compensation expense based on the revised number of shares expected to be earned. We estimate the fair value of our stock options on the date of grant using the Black-Scholes option pricing model, which requires various assumptions such as expected term, expected stock price volatility and risk-free interest rate. We estimate the expected term of stock options granted taking into consideration historical data related to stock option exercises. We use historical stock price data in order to estimate the expected volatility factor of stock options granted. The risk-free interest rate for the periods within the expected life of the option is based on the U.S. Treasury yield curve in effect at the time of grant.
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 period. On an ongoing basis, we evaluate the estimates used, including but not limited to those related to revenue recognition, the allowance for doubtful accounts receivable, impairments of goodwill and other intangible assets, valuation of intangible assets acquired and contingent consideration liabilities assumed in business acquisitions, valuation of stock-based compensation awards and income taxes. Actual results could differ from these estimates.
Fair Value Estimates	Fair Value Estimates ASC Topic 820, Fair Value Measurements and Disclosure (“Topic 820”), defines fair value, establishes a market-based framework or hierarchy for measuring fair value, and expands disclosures about fair value measurements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The guidance within Topic 820 is applicable whenever another accounting pronouncement requires or permits assets and liabilities to be measured at fair value. The fair value hierarchy prioritizes the inputs used in valuation techniques into three levels as follows: • Level 1 – unadjusted quoted prices for identical assets or liabilities in active markets; • Level 2 – quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs other than quoted market prices that are observable or that can be corroborated by observable market data by correlation; and • Level 3 – unobservable inputs based upon the reporting entity’s internally developed assumptions which market participants would use in pricing the asset or liability. The carrying value of financial instruments including cash, accounts receivable, accounts payable and short-term borrowings approximate estimated market values because of short-term maturities and interest rates that approximate current rates. In addition, the fair value of our long-term debt approximated its carrying value as of December 31, 2018 as it bears interest at variable rates. Our fair value measurements related to goodwill, intangible assets and contingent consideration are recognized in connection with acquisitions and are valued using Level 3 inputs. Our interest rate derivatives are valued using Level 2 inputs.
Leases	Leases We lease various office space, machinery and equipment under noncancelable operating leases which have minimum lease obligations. Many of the leases contain provisions for rent escalations based on increases in real estate taxes and operating costs incurred by the lessor. Rent expense is recognized in the statements of operations as incurred except for escalating rents, which are expensed on a straight-line basis over the terms of the leases.
Legal Expenses	Legal Expenses We are involved, from time to time, in litigation and proceedings arising out of the ordinary course of business. Costs for legal services rendered in the course of these proceedings are charged to expense as they are incurred.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified to conform with the current year presentation.
Accounting Standard Issued	Accounting Standards ASU 2016-02, Leases (Topic 842) requires the recognition of lease rights and obligations as assets and liabilities on the balance sheet. Previously, lessees were not required to recognize on the balance sheet assets and liabilities arising from operating leases. The ASU also requires disclosure of key information about leasing arrangements. ASU 2016-02 is effective on January 1, 2019, using a modified retrospective method of adoption as of January 1, 2017. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, which provides an alternative transition method of adoption, permitting the recognition of a cumulative-effect adjustment to retained earnings on the date of adoption in lieu of modified retrospective adoption. We adopted the standard effective January 1, 2019, using the alternative transition method provided by ASU 2018-11. The new standard provides several optional practical expedients for use in transition. We have elected to use what the FASB has deemed the “package of practical expedients,” which allows us not to reassess our previous conclusions about lease identification, lease classification and the accounting treatment for initial direct costs. The ASU also provides several optional practical expedients for the ongoing accounting for leases. We have elected the short-term lease recognition exemption for all leases that qualify, meaning that for these leases, we will not recognize right-of-use (ROU) assets or lease liabilities on our consolidated balance sheet. Additionally, we have elected to use the practical expedient to not separate lease and non-lease components for leases of real estate, meaning that for these leases, the non-lease components are included in the associated ROU asset and lease liability balances on our consolidated balance sheet. The most significant effects of the standard on our consolidated financial statements are (1) the recognition of new ROU assets and lease liabilities on our consolidated balance sheet for our operating leases, and (2) significant new disclosures about our leasing activities. Based on our portfolio of leases as of December 31, 2018, we estimate that ROU assets ranging from $30 million to $32 million and lease liabilities ranging from $33 million to $35 million , will be recorded on the balance sheet upon adoption, which will include reclassifying prepaid rent and deferred rent as a component of the ROU asset. The new standard is not expected to have a material impact on our results of operations or cash flows. The Company is evaluating the new disclosure requirements and incorporating the collection of relevant data into its processes in preparation for disclosure in 2019. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements for fair value measurements. The guidance promotes a framework to help improve the effectiveness of disclosures in the notes and is effective for annual and interim periods beginning after December 15, 2019, although early adoption is permitted. We are in the process of evaluating the impact of this new guidance on our consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment . The standard will remove step 2 from the goodwill impairment test. Under the ASU, an entity should perform its annual goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value, however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for public companies for annual reporting periods beginning after December 15, 2019. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. We adopted the standard on January 1, 2019. The adoption of the ASU did not have an effect on our results of operations, financial condition or cash flows. In August 2017, the FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities . The standard will ease the administrative burden of hedge documentation requirements and assessing hedge effectiveness. ASU 2017-12 is effective for public companies for annual reporting periods beginning after December 15, 2018 but early adoption is permitted. We adopted the standard on January 1, 2019. The adoption of the ASU did not have an effect on our results of operations, financial condition or cash flows. In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No.2016-09, Compensation—Stock Compensation (Topic 718) ("ASU 2016-09"), which simplifies several areas of accounting for share-based compensation arrangements. Upon adoption, ASU 2016-09 requires that excess tax benefits or deficiencies for share-based payments be recorded as income tax expense or benefit and reflected within operating cash flows rather than being recorded within equity and reflected within financing cash flows. The standard also requires companies to make an accounting policy election on whether to account for forfeitures on share-based payments by 1) recognizing forfeitures as they occur; or 2) estimating the number of awards expected to be forfeited and periodically adjusting the estimate, as was previously required. The standard is effective for annual and interim reporting periods of public companies beginning after December 15, 2016, although early adoption was permitted. We adopted ASU 2016-09 on January 1, 2017 and elected to make an accounting policy change to recognize forfeitures as they occur. The impact of adoption on the consolidated balance sheet was a cumulative-effect adjustment of $0.1 million , decreasing opening retained earnings. We recognized an income tax benefit of less than $0.1 million relating to excess tax benefits on stock-based compensation awards during the twelve months ended December 31, 2017 and could experience volatility in our effective income tax rate in the future as a result of this accounting change. We also elected to prospectively apply the change in presentation on the statement of cash flows and did not reclassify excess tax benefits on stock-based compensation from financing to operating cash flows for the prior period presented. In August 2018, the FASB issued ASU No. 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract . ASU 2018-15 amends current guidance to align the accounting for costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing costs associated with developing or obtaining internal-use software. Capitalized implementation costs must be expensed over the term of the hosting arrangement and presented in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement. Both internal and external costs for activities to develop or obtain software that allow for access to or conversion of old data by new system, as well as coding and testing during the application development stage are capitalizable. Training activities and data conversion activities will continue to be expensed as incurred. ASU 2018-15 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted, and the Company early adopted the ASU during the third quarter of 2018, effective July 1, 2018 on a prospective basis. In connection with the adoption of ASU 2018-15, the Company capitalized $ 0.9 million of implementation costs relating to a new enterprise resource planning (ERP) system that went live in October 2018. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Accounting Standards Codification (ASC) Topic 606), which provides a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. We adopted ASC Topic 606 on January 1, 2018 using the modified retrospective method. Under this transition method, we applied the new standard to contracts that were not completed as of the adoption date and recognized a cumulative effect adjustment which reduced retained earnings by $ 0.4 million on January 1, 2018. The comparative prior period information has not been restated and continues to be presented according to accounting standards in effect for those periods. The primary impact of ASU No. 2014-09 on our financial statements is a change in revenue recognition on a small portion of our contracts from a proportional performance method, where revenue was previously recognized over contract performance, to a point in time method, where revenue is now recognized upon completion of our performance obligations. While we don't believe the adoption of ASU 2014-09 will materially impact our overall financial statements, the change in timing of revenue recognition on certain contracts could result in quarter to quarter fluctuations in revenue. See Note 2 for further details regarding our revenue recognition accounting policies and other required disclosures. The cumulative effect of the changes made to our January 1, 2018 balance sheet for the adoption of the new revenue standard was as follows (in thousands): Balance at December 31, 2017 Adjustments due to ASC Topic 606 Balance at January 1, 2018 Assets: Prepaid expenses and other current assets $ 14,212 $ 2,059 $ 16,271 Deferred tax assets 1,135 132 1,267 Liabilities and Stockholders’ Equity: Deferred revenue 22,356 2,587 24,943 Retained earnings 106,599 (396 ) 106,203 The following tables summarize the current period impacts of adopting ASC Topic 606 on our consolidated financial statements as of and for the year ended December 31, 2018 . Selected consolidated statement of operations line items, which were impacted by the adoption of the new standard, are as follows for the year ended December 31, 2018 (in thousands): As reported Balances without Adoption of Topic 606 Effect of Adoption - Higher (Lower) Revenue $ 515,160 $ 513,996 $ 1,164 Cost of revenue 437,417 436,966 451 Gross profit 77,743 77,030 713 Income tax expense 4,927 4,742 185 Net income 9,836 9,308 528 Per common share data: Basic earnings per share $ 0.59 $ 0.56 $ 0.03 Diluted earnings per share $ 0.59 $ 0.56 $ 0.03 The adoption of ASC Topic 606 did not have a significant impact on our consolidated statement of comprehensive income for the year ended December 31, 2018 . Selected consolidated balance sheet line items, which were impacted by the adoption of the new standard, are as follows as of December 31, 2018 (in thousands): As reported Balances without adoption of ASC Topic 606 Effect of Adoption - Higher (Lower) Assets: Prepaid expenses and other current assets $ 19,048 $ 17,405 $ 1,643 Deferred tax assets 1,077 1,130 (53 ) Total assets 434,738 433,148 1,590 Liabilities and Stockholders’ Equity: Accounts payable and accrued expenses 93,254 92,803 451 Deferred revenue 23,704 22,697 1,007 Retained earnings 116,039 115,907 132 Total liabilities and stockholders' equity 434,738 433,148 1,590 The adoption of ASC Topic 606 did not impact our total cash flows from operating, investing or financing activities. In addition, the impact to the individual line items within the operating activities section of our consolidated statement of cash flows was not significant for the year ended December 31, 2018 .

Description of Business and S_3

Description of Business and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Allowance for doubtful accounts activity	Activity in our allowance for doubtful accounts was comprised of the following for the periods indicated: Year ended December 31, 2018 2017 2016 (In thousands) Beginning balance $ 2,492 $ 1,091 $ 1,856 Additions 234 1,720 368 Deductions (692 ) (319 ) (1,133 ) Ending balance $ 2,034 $ 2,492 $ 1,091
Property, plant and equipment estimated useful lives	Depreciation of property, plant and equipment is recognized on a straight-line basis over the following estimated useful lives: Class of assets Useful life Buildings and improvements 5 to 40 years Machinery, equipment, and furniture and fixtures 3 to 10 years Leasehold improvements Shorter of asset life or term of lease
Schedule of antidilutive securities excluded from computation of EPS	The following table presents instruments which were not dilutive and were excluded from the computation of diluted EPS in each period, as well as the weighted average dilutive common stock equivalent shares which were included in the computation of diluted EPS: Year ended December 31, 2018 2017 2016 (In thousands) Non-dilutive instruments 82 13 45 Dilutive common stock equivalents 88 125 95

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following series of tables presents our revenue disaggregated by various categories (dollars in thousands). Years Ended December 31, Workforce Excellence Business Transformation Services Consolidated 2018 2017 2016 2018 2017 2016 2018 2017 2016 Revenue by type of service: Managed learning services $ 206,388 207,007 204,007 $ — — $ 206,388 207,007 204,007 Engineering & technical services 110,426 101,252 101,908 — — 110,426 101,252 101,908 Sales enablement — — — 103,740 101,196 101,939 103,740 101,196 101,939 Organizational development — — — 94,606 99,753 82,705 94,606 99,753 82,705 $ 316,814 308,259 305,915 $ 198,346 200,949 184,644 $ 515,160 509,208 490,559 Revenue by geographic region: Americas $ 213,938 198,653 198,393 $ 165,807 175,027 164,727 $ 379,745 373,680 363,120 Europe Middle East Africa 91,764 100,296 97,274 38,171 30,461 22,603 129,935 130,757 119,877 Asia Pacific 30,688 29,828 30,173 2,634 376 450 33,322 30,204 30,623 Eliminations (19,576 ) (20,518 ) (19,925 ) (8,266 ) (4,915 ) (3,136 ) (27,842 ) (25,433 ) (23,061 ) $ 316,814 308,259 305,915 $ 198,346 200,949 184,644 $ 515,160 509,208 490,559 Revenue by client market sector: Automotive $ 10,646 10,102 7,672 $ 105,431 101,285 101,627 $ 116,077 111,387 109,299 Financial & Insurance 87,813 86,718 87,102 12,303 16,339 15,792 100,116 103,057 102,894 Manufacturing 33,055 35,795 37,135 16,156 17,134 8,625 49,211 52,929 45,760 Energy / Oil & Gas 37,088 34,195 35,580 4,752 2,429 3,258 41,840 36,624 38,838 U.S. Government 29,584 25,254 25,011 8,782 9,475 10,191 38,366 34,729 35,202 U.K. Government 18,733 27,734 25,487 — — — 18,733 27,734 25,487 Information & Communication 14,083 18,123 19,410 9,510 10,490 7,942 23,593 28,613 27,352 Aerospace 25,989 22,142 21,262 3,683 6,549 1,189 29,672 28,691 22,451 Electronics Semiconductor 15,070 16,449 23,253 857 1,069 821 15,927 17,518 24,074 Life Sciences 15,009 8,420 7,113 8,750 9,377 10,433 23,759 17,797 17,546 Other 29,744 23,327 16,890 28,122 26,802 24,766 57,866 50,129 41,656 $ 316,814 308,259 305,915 $ 198,346 200,949 184,644 $ 515,160 509,208 490,559

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following table summarizes the purchase prices and purchase price allocations for the acquisitions completed during the year ended December 31, 2017. A description of the acquired businesses is summarized below the table. Acquired company YouTrain CLS Emantras McKinney Rogers Acquisition date 8/31/2017 8/31/2017 4/1/2017 2/1/2017 Cash purchase price $ 4,898 $ 436 $ 3,191 $ 3,259 Fair value of contingent consideration — 888 220 4,505 Working capital adjustment 180 — — — Total purchase price $ 5,078 $ 1,324 $ 3,411 $ 7,764 Purchase price allocation: Cash $ 673 $ — $ — $ — Accounts receivable and other assets 234 — — — Fixed assets 215 — 50 — Technology-related intangible assets — — — 2,704 Customer-related intangible assets 1,313 253 818 653 Marketing-related intangible assets (tradename) — — — 121 Goodwill 3,268 1,090 3,156 5,196 Total assets 5,703 1,343 4,024 8,674 Accounts payable and accrued expenses 348 19 558 44 Deferred revenue 28 — 55 866 Deferred tax liability 249 — — — Total liabilities 625 19 613 910 Net assets acquired $ 5,078 $ 1,324 $ 3,411 $ 7,764 The following table summarizes the purchase price and purchase price allocation for the acquisition (dollars in thousands). Cash purchase price $ 4,639 Fair value of contingent consideration 5,166 Total purchase price $ 9,805 Amortization Purchase price allocation: Period Fixed assets $ 63 Customer-related intangible assets 1,219 4 years Marketing-related intangible assets (tradename) 124 2 years Technology-related intangible assets 649 3 years Goodwill 8,111 Total assets 10,166 Accrued expenses 38 Deferred revenue 323 Total liabilities 361 Net assets acquired $ 9,805
Schedule of Changes in Contingent Consideration Liabilities	Below is a summary of the changes in the recorded amount of contingent consideration liabilities from December 31, 2017 to December 31, 2018 for each acquisition (dollars in thousands): Liability as of 2018 Additions Change in Fair Value of Contingent Foreign Currency 2018 Liability as of Acquisition: Dec. 31, 2017 Consideration Translation Dec. 31, 2018 IC Axon $ — 905 (311 ) — $ 594 Maverick $ 1,979 — (1,979 ) — — $ — McKinney Rogers 1,501 — (1,418 ) — — 83 Emantras 76 — (76 ) — — — CLS 669 — (654 ) (15 ) — — $ 4,225 $ 905 $ (4,438 ) $ (15 ) — $ 677

Goodwill & Other Intangible A_2

Goodwill & Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes in the carrying amount of goodwill by reportable business segment for the years ended December 31, 2018 and 2017 were as follows (in thousands): Business Workforce Transformation Excellence Services Total Net book value at January 1, 2017 Goodwill $ 104,345 $ 38,844 $ 143,189 Accumulated impairment losses (9,050 ) (6,367 ) (15,417 ) Total 95,295 32,477 127,772 2017 Activity: Acquisitions 6,424 6,286 12,710 Foreign currency translation 4,045 308 4,353 Net book value at December 31, 2017 Goodwill 114,814 45,438 160,252 Accumulated impairment losses (9,050 ) (6,367 ) (15,417 ) Total 105,764 39,071 144,835 2018 Activity: Acquisitions 21,613 14,033 35,646 Foreign currency translation (3,459 ) (898 ) (4,357 ) Net book value at December 31, 2018 Goodwill 132,968 58,573 191,541 Accumulated impairment losses (9,050 ) (6,367 ) (15,417 ) Total $ 123,918 $ 52,206 $ 176,124
Schedule of Finite-Lived Intangible Assets	Intangible assets with finite lives are subject to amortization over their estimated useful lives. The primary assets included in this category and their respective balances were as follows (in thousands): December 31, 2018 Gross Carrying Accumulated Net Carrying Amount Amortization Amount Customer relationships $ 26,524 $ (8,547 ) $ 17,977 Intellectual property and other 4,936 (1,980 ) 2,956 $ 31,460 $ (10,527 ) $ 20,933 December 31, 2017 Customer relationships $ 16,330 $ (11,140 ) $ 5,190 Intellectual property and other 4,298 (1,125 ) 3,173 $ 20,628 $ (12,265 ) $ 8,363
Schedule of Estimated Future Amortization Expense	Estimated future amortization expense for intangible assets included in our consolidated balance sheet as of December 31, 2018 is as follows (in thousands): Fiscal year ending: 2019 $ 4,968 2020 3,844 2021 3,211 2022 2,027 2023 1,799 Thereafter 5,084 Total $ 20,933

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment consisted of the following (in thousands): December 31, 2018 2017 Machinery, equipment and vehicles $ 18,121 $ 16,078 Furniture and fixtures 3,779 3,090 Leasehold improvements 2,369 1,967 Buildings 311 331 24,580 21,466 Accumulated depreciation and amortization (18,721 ) (16,343 ) $ 5,859 $ 5,123

Accounts Payable and Accrued _2

Accounts Payable and Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Expenses	Accounts payable and accrued expenses consisted of the following (in thousands): December 31, 2018 2017 Trade accounts payable $ 40,969 $ 24,189 Accrued salaries, vacation and benefits 21,550 22,205 Other accrued expenses 28,372 26,256 Accrued contingent consideration 594 2,724 Negative cash book balance 1,769 2,906 $ 93,254 $ 78,280

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Maturities of Long-term Debt

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of income before income taxes	The components of income before income taxes and income tax expense for the years ended December 31, 2018 , 2017 and 2016 are as follows (in thousands): Years ended December 31, 2018 2017 2016 Income before income taxes: Domestic $ 5,577 $ 2,901 $ 13,988 Foreign 9,186 16,788 16,046 Total income before income taxes $ 14,763 $ 19,689 $ 30,034 Income tax expense (benefit): Current: Federal $ 388 $ 3,210 $ 5,511 State and local 378 256 1,152 Foreign 3,285 3,645 4,885 Total current 4,051 7,111 11,548 Deferred: Federal 813 (241 ) (1,039 ) State and local 258 (176 ) 56 Foreign (195 ) 104 (778 ) Total deferred 876 (313 ) (1,761 ) Total income tax expense $ 4,927 $ 6,798 $ 9,787
Schedule of effective income tax rate reconciliation	The provision for income taxes differs from the amount computed by applying the statutory federal income tax rate to income before income taxes. The sources and tax effects of the differences are as follows: December 31, 2018 2017 2016 Federal income tax rate 21.0 % 35.0 % 35.0 % State and local taxes net of federal benefit 1.9 0.2 2.4 Domestic production deduction — (1.1 ) (0.6 ) Foreign tax rate differential 1.8 (8.8 ) (5.8 ) Permanent differences 2.7 (6.2 ) 4.8 Other 2.6 (0.9 ) (3.2 ) Global Intangible Low-taxed Income 1.5 — — Tax Cuts and Jobs Act of 2017 1.9 16.3 — Effective tax rate 33.4 % 34.5 % 32.6 %
Schedule of deferred tax assets and liabilities	Significant components of our deferred tax assets and liabilities are as follows (in thousands): December 31, 2018 2017 Deferred tax assets: Allowance for doubtful accounts $ 531 $ 559 Accrued liabilities and other 2,564 2,381 Stock-based compensation expense 296 599 Net federal, state and foreign operating loss carryforwards 1,953 1,432 Foreign tax credit carryforwards 266 — Deferred tax assets 5,610 4,971 Valuation allowance on deferred tax assets (1,385 ) (1,502 ) Deferred tax liabilities: Other 1,181 208 Intangible assets, property and equipment, principally due to difference in depreciation and amortization 10,784 5,312 Net deferred tax liabilities $ (7,740 ) $ (2,051 )

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Pre-tax Stock-based Compensation	The following table summarizes the pre-tax stock-based compensation expense included in reported net income (in thousands): Years ended December 31, 2018 2017 2016 Cost of revenue $ 992 $ 2,832 $ 2,545 General and administrative expenses 358 757 684 Total stock-based compensation expense $ 1,350 $ 3,589 $ 3,229
Schedule of Non-qualified Stock Option Activity	Summarized information for our non-qualified stock options is as follows: Stock Options Number of options Weighted average exercise price Weighted average remaining contractual term Aggregate intrinsic value Outstanding at December 31, 2017 3,000 $ 19.38 Granted — — Exercised (500 ) 19.38 Forfeited — — Expired (2,500 ) 19.38 Outstanding at December 31, 2018 — $ — 0.00 $ — Exercisable at December 31, 2018 — $ — 0.00 $ —
Schedule of Restricted Stock Units Activity	Summarized share information for our restricted stock units is as follows: Year ended December 31, 2018 Weighted average grant date fair value (In shares) (In dollars) Outstanding and unvested, beginning of period 148,234 $ 26.79 Granted 77,712 17.96 Vested (87,970 ) 27.92 Forfeited (5,223 ) 25.77 Outstanding and unvested, end of period 132,753 $ 20.91
Schedule of Performance Restricted Stock Unit Activity	Summarized share information for our performance-based restricted stock units is as follows: Year ended December 31, 2018 Weighted average grant date fair value (In shares) (In dollars) Outstanding and unvested, beginning of period 189,068 $ 27.68 Granted 141,851 22.55 Vested — — Forfeited (63,956 ) 32.50 Outstanding and unvested, end of period 266,963 $ 23.80

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following table sets forth the revenue and operating results attributable to each reportable segment and includes a reconciliation of segment revenue to consolidated revenue and operating results to consolidated income before income tax expense (in thousands): Years ended December 31, 2018 2017 2016 Revenue: Workforce Excellence $ 316,814 $ 308,259 $ 305,915 Business Transformation Services 198,346 200,949 184,644 $ 515,160 $ 509,208 $ 490,559 Gross Profit: Workforce Excellence $ 50,875 $ 52,958 $ 53,355 Business Transformation Services 26,868 29,069 26,802 Total gross profit 77,743 82,027 80,157 General and administrative expenses 54,848 55,753 47,162 Sales and marketing expenses 4,798 1,666 1,435 Restructuring charges 2,930 3,317 — Gain (loss) on change in fair value of contingent consideration, net 4,438 1,620 (136 ) Operating income 19,605 22,911 31,424 Interest expense 2,945 3,132 1,568 Other (expense) income (1,897 ) (90 ) 178 Income before income tax expense $ 14,763 $ 19,689 $ 30,034
Additional Information Relating To Business Segments	Additional information relating to our business segments is as follows (in thousands): December 31, 2018 2017 Identifiable assets: Workforce Excellence $ 283,039 $ 241,277 Business Transformation Services 151,699 123,730 Total assets $ 434,738 $ 365,007
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area	Corporate and other assets which consist primarily of cash, other assets, and deferred tax assets and liabilities are allocated to the segments based on their respective percentage of consolidated revenues. Years ended December 31, 2018 2017 2016 Additions to property, plant and equipment: Workforce Excellence $ 1,321 $ 1,609 $ 685 Business Transformation Services 625 184 62 Corporate and other 888 941 655 $ 2,834 $ 2,734 $ 1,402 Depreciation and amortization: Workforce Excellence $ 3,664 $ 2,643 $ 3,116 Business Transformation Services 2,827 2,770 1,994 Corporate and other 1,430 1,561 1,352 $ 7,921 $ 6,974 $ 6,462
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country	Information about our total assets in different geographic regions is as follows (in thousands): December 31, 2018 2017 United States $ 280,097 $ 215,523 United Kingdom 72,048 75,862 Other 82,593 73,622 $ 434,738 $ 365,007 Information about our revenue in different geographic regions, which is attributable to our operations located primarily in the United States, United Kingdom and other countries is as follows (in thousands): Years ended December 31, 2018 2017 2016 United States $ 344,720 $ 350,632 $ 339,329 United Kingdom 92,059 100,466 93,017 Other 78,381 58,110 58,213 $ 515,160 $ 509,208 $ 490,559

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities	The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and 2017 , and the level they fall within the fair value hierarchy (in thousands): Fair Value Fair Value December 31, Financial Instrument Financial Statement Classification Hierarchy 2018 2017 Contingent consideration Accounts payable and accrued expenses Level 3 $ 594 $ 2,724 Contingent consideration Other noncurrent liabilities Level 3 83 1,502 Interest rate swap agreement Other assets Level 2 — 88 Interest rate cap agreement Other assets Level 2 — 285

Commitments, Guarantees, and _2

Commitments, Guarantees, and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Minimum rentals under long-term operating leases are as follows (in thousands): Fiscal year ending: Real property Machinery and equipment Total 2019 $ 9,727 $ 919 $ 10,646 2020 7,361 472 7,833 2021 5,264 256 5,520 2022 4,466 62 4,528 2023 3,864 34 3,898 Thereafter 8,671 — 8,671 Total $ 39,353 $ 1,743 $ 41,096

Quarterly Information (unaudi_2

Quarterly Information (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	Our quarterly financial information has not been audited but, in management’s opinion, includes all adjustments necessary for a fair presentation. (In thousands) Three months ended Year ended 2018 March 31 June 30 September 30 December 31 December 31 Revenue $ 125,032 $ 133,691 $ 123,566 $ 132,871 515,160 Gross profit 17,679 22,573 19,199 18,292 77,743 Net income 2,632 3,575 3,244 385 9,836 Earnings per share: Basic $ 0.16 $ 0.22 $ 0.20 $ 0.02 $ 0.59 Diluted $ 0.16 $ 0.22 $ 0.20 $ 0.02 $ 0.59 2017 Revenue $ 122,447 $ 131,161 $ 124,097 $ 131,503 $ 509,208 Gross profit 19,388 22,435 18,646 21,558 82,027 Net income (loss) 4,086 5,863 3,281 (a) (339 ) (a) 12,891 Earnings (loss) per share: Basic $ 0.24 $ 0.35 $ 0.20 $ (0.02 ) $ 0.77 Diluted $ 0.24 $ 0.35 $ 0.19 $ (0.02 ) $ 0.76 The sum of the quarterly earnings per share amounts may not equal the total for the year due to the effects of rounding and dilution as a result of issuing common shares during the year. (a) Includes a $ 2.6 million gross profit reduction in the third quarter ended September 30, 2017 due to a contract performance dispute resulting in an increase in estimated costs to complete a project for a foreign oil and gas client. During the quarter ended December 31, 2017, the client terminated the contract and we incurred a $1.8 million loss in the fourth quarter of 2017, of which $0.5 million is reflected as a reduction to gross profit and $1.3 million is included in SG&A expense and represents a bad debt reserve relating to accounts receivable from the client.

Description of Business and S_4

Description of Business and Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2018	Jan. 01, 2018	Jan. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment of adopting ASU 2014-09				$ (900)
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning balance	$ 2,492	$ 1,091	$ 1,856
Additions	234	1,720	368
Deductions	(692)	(319)	(1,133)
Ending balance	$ 2,034	$ 2,492	$ 1,091
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment of adopting ASU 2014-09						$ (97)
Accounting Standards Update 2016-09 [Member] | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment of adopting ASU 2014-09						$ 137
Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment of adopting ASU 2014-09					$ 396
Accounting Standards Update 2014-09 [Member] | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment of adopting ASU 2014-09					$ 396

Description of Business and S_5

Description of Business and Significant Accounting Policies (Details 1) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2018	Jan. 01, 2018	Jan. 01, 2017
Significant Accounting Policies [Line Items]
Revenue									$ 515,160	$ 509,208	$ 490,559
Revenue	$ 132,871	$ 123,566	$ 133,691	$ 125,032	$ 131,503	$ 124,097	$ 131,161	$ 122,447	515,160	509,208	490,559
Cost of revenue									437,417	427,181	410,402
Total gross profit	18,292	19,199	22,573	17,679	21,558	18,646	22,435	19,388	77,743	82,027	80,157
Restructuring charges									2,930	3,317	0
Gain (loss) on change in fair value of contingent consideration, net									4,438	1,620	(136)
Operating Income (Loss)									19,605	22,911	31,424
Interest Expense									2,945	3,132	1,568
Other (expense) income (including interest income of $8 in 2018, $43 in 2017 and $94 in 2016)									(1,897)	(90)	178
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest									14,763	19,689	30,034
Income tax expense									4,927	6,798	9,787
Net Income (Loss) Attributable to Parent	$ 385	$ 3,244	$ 3,575	$ 2,632	$ (339)	$ 3,281	$ 5,863	$ 4,086	$ 9,836	$ 12,891	$ 20,247
Weighted Average Number of Shares Outstanding, Basic									16,608	16,748	16,696
Weighted Average Number of Shares Outstanding, Diluted									16,696	16,873	16,791
Basic earnings per share (in dollars per share)	$ 0.02	$ 0.20	$ 0.22	$ 0.16	$ (0.02)	$ 0.20	$ 0.35	$ 0.24	$ 0.59	$ 0.77	$ 1.21
Diluted earnings per share (in dollars per share)	$ 0.02	$ 0.20	$ 0.22	$ 0.16	$ (0.02)	$ 0.19	$ 0.35	$ 0.24	$ 0.59	$ 0.76	$ 1.21
Cumulative Effect of New Accounting Principle in Period of Adoption												$ (900)
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount										$ 100
Prepaid expenses and other current assets	$ 19,048				$ 14,212				$ 19,048	14,212			$ 16,271
Deferred tax assets	1,077				1,135				1,077	1,135			1,267
Contract with Customer, Liability	23,704				22,356				23,704	22,356			24,943
Retained earnings	116,039				106,599				116,039	106,599			106,203
Assets	434,738				365,007				434,738	365,007
Accounts payable and accrued expenses	93,254				78,280				93,254	78,280
Liabilities and Equity	434,738				365,007				$ 434,738	$ 365,007
Leasehold Improvements [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives									Shorter of asset life or term of lease
Building Improvements [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life									40 years
Building Improvements [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life									5 years
Machinery, Equipment, and Furniture and Fixtures [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life									10 years
Machinery, Equipment, and Furniture and Fixtures [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life									3 years
Accounting Standards Update 2016-09 [Member]
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption														$ (97)
Accounting Standards Update 2016-09 [Member] | Retained Earnings
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption														$ 137
Accounting Standards Update 2014-09 [Member]
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption													396
Accounting Standards Update 2014-09 [Member] | Retained Earnings
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption													$ 396
Sales Revenue, Net [Member] | Automotive Industry [Member] | Single Automotive Customer [Member]
Significant Accounting Policies [Line Items]
Concentration Risk, Percentage										13.00%
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Significant Accounting Policies [Line Items]
Revenue									$ 513,996
Cost of revenue									436,966
Total gross profit									77,030
Income tax expense									4,742
Net Income (Loss) Attributable to Parent									$ 9,308
Basic earnings per share (in dollars per share)									$ 0.56
Diluted earnings per share (in dollars per share)									$ 0.56
Prepaid expenses and other current assets	17,405				14,212				$ 17,405	$ 14,212
Deferred tax assets	1,130				1,135				1,130	1,135
Contract with Customer, Liability	22,697				22,356				22,697	22,356
Retained earnings	115,907				106,599				115,907	106,599
Assets	433,148								433,148
Accounts payable and accrued expenses	92,803								92,803
Liabilities and Equity	433,148								433,148
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Significant Accounting Policies [Line Items]
Revenue									1,164
Cost of revenue									451
Total gross profit									713
Income tax expense									185
Net Income (Loss) Attributable to Parent									$ 528
Basic earnings per share (in dollars per share)									$ 0.03
Diluted earnings per share (in dollars per share)									$ 0.03
Prepaid expenses and other current assets	1,643				2,059				$ 1,643	2,059
Deferred tax assets	(53)				132				(53)	132
Contract with Customer, Liability	1,007				2,587				1,007	2,587
Retained earnings	132				$ (396)				132	$ (396)
Assets	1,590								1,590
Accounts payable and accrued expenses	451								451
Liabilities and Equity	$ 1,590								$ 1,590

Description of Business and S_6

Description of Business and Significant Accounting Policies (Details 2) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Non-dilutive instruments	82	13	45
Dilutive common stock equivalents	88	125	95

Description of Business and S_7

Description of Business and Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019	Jul. 01, 2018
Concentration Risk [Line Items]
Accounts and other receivables		$ 107,673	$ 119,335
Negative cash book balance		1,769	2,906
Revenue and gross profit reduction related to contract	$ 2,600
Foreign currency transaction loss		$ 2,300	300	$ 200
Ownership percentage		10.00%
Cumulative Effect of New Accounting Principle in Period of Adoption						$ 900
Single Automotive Customer [Member]
Concentration Risk [Line Items]
Maximum concentration risk percentage		10.00%
Selling, General and Administrative Expenses [Member]
Concentration Risk [Line Items]
Bad debt reserve			$ 1,300
Accounts Receivable [Member] | Automotive Industry [Member] | Single Automotive Customer [Member]
Concentration Risk [Line Items]
Concentration risk (percent)		18.00%
Accounts and other receivables		$ 19,900
Accounts Receivable [Member] | Financial & Insurance Industry [Member] | Single Financial Services Customer [Member]
Concentration Risk [Line Items]
Concentration risk (percent)		11.00%
Accounts and other receivables		$ 21,200
Sales Revenue, Net [Member] | Automotive Industry [Member]
Concentration Risk [Line Items]
Concentration risk (percent)		23.00%	22.00%	22.00%
Sales Revenue, Net [Member] | Automotive Industry [Member] | Single Automotive Customer [Member]
Concentration Risk [Line Items]
Concentration risk (percent)		14.00%	13.00%	13.00%
Sales Revenue, Net [Member] | Financial & Insurance Industry [Member]
Concentration Risk [Line Items]
Concentration risk (percent)		19.00%	20.00%	21.00%
Sales Revenue, Net [Member] | Financial & Insurance Industry [Member] | Single Financial Services Customer [Member]
Concentration Risk [Line Items]
Concentration risk (percent)		13.00%	14.00%	15.00%
Minimum [Member]
Concentration Risk [Line Items]
Revenue from Contract with Customer, Collection Period		60 days
Minimum [Member] | Accounting Standards Update 2016-02 [Member] | Scenario, Forecast [Member]
Concentration Risk [Line Items]
Operating ease, right-of-use asset					$ 30,000
Operating lease, liability					33,000
Maximum [Member]
Concentration Risk [Line Items]
Revenue from Contract with Customer, Collection Period		120 days
Maximum [Member] | Accounting Standards Update 2016-02 [Member] | Scenario, Forecast [Member]
Concentration Risk [Line Items]
Operating ease, right-of-use asset					32,000
Operating lease, liability					$ 35,000

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer, Percentage of Revenues Derived From Services Provided	90.00%
Percentage of revenues derived from other sources	10.00%
Net increase to revenue for adjustments to fixed price contracts	$ 1,500,000	$ (800,000)	$ 600,000
Remaining performance obligations	318,000,000
Remaining performance obligation expected to be recognized in next 12 months, percentage	0.90
Disaggregation of Revenue [Line Items]
Revenue recognized related to contract liabilities	20,000,000
Contract costs	1,600,000
Recognized contract costs	$ 5,400,000
Minimum [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Collection Period	60 days
Maximum [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Collection Period	120 days

Revenue - Revenue by Category (

Revenue - Revenue by Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenue	$ 515,160	$ 509,208	$ 490,559
Automotive Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	116,077	111,387	109,299
Financial and Insurance Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	100,116	103,057	102,894
Manufacturing Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	49,211	52,929	45,760
Energy, Oil and Gas Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	41,840	36,624	38,838
U.S. Government Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	38,366	34,729	35,202
UK Government Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	18,733	27,734	25,487
Information and Communication Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	23,593	28,613	27,352
Aerospace Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	29,672	28,691	22,451
Electronics Semiconductor Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	15,927	17,518	24,074
Life Sciences Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	23,759	17,797	17,546
Other Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	57,866	50,129	41,656
Managed Learning Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	206,388	207,007	204,007
Engineering and Technical Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	110,426	101,252	101,908
Sales Enablement [Member]
Disaggregation of Revenue [Line Items]
Revenue	103,740	101,196	101,939
Organizational Development [Member]
Disaggregation of Revenue [Line Items]
Revenue	94,606	99,753	82,705
Reportable Geographical Components [Member] | Americas [Member]
Disaggregation of Revenue [Line Items]
Revenue	379,745	373,680	363,120
Reportable Geographical Components [Member] | EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenue	129,935	130,757	119,877
Reportable Geographical Components [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue	33,322	30,204	30,623
Geography Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	(27,842)	(25,433)	(23,061)
Workforce Excellence [Member]
Disaggregation of Revenue [Line Items]
Revenue	316,814	308,259	305,915
Workforce Excellence [Member] | Automotive Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	10,646	10,102	7,672
Workforce Excellence [Member] | Financial and Insurance Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	87,813	86,718	87,102
Workforce Excellence [Member] | Manufacturing Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	33,055	35,795	37,135
Workforce Excellence [Member] | Energy, Oil and Gas Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	37,088	34,195	35,580
Workforce Excellence [Member] | U.S. Government Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	29,584	25,254	25,011
Workforce Excellence [Member] | UK Government Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	18,733	27,734	25,487
Workforce Excellence [Member] | Information and Communication Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	14,083	18,123	19,410
Workforce Excellence [Member] | Aerospace Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	25,989	22,142	21,262
Workforce Excellence [Member] | Electronics Semiconductor Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	15,070	16,449	23,253
Workforce Excellence [Member] | Life Sciences Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	15,009	8,420	7,113
Workforce Excellence [Member] | Other Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	29,744	23,327	16,890
Workforce Excellence [Member] | Managed Learning Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	206,388	207,007	204,007
Workforce Excellence [Member] | Engineering and Technical Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	110,426	101,252	101,908
Workforce Excellence [Member] | Sales Enablement [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Workforce Excellence [Member] | Organizational Development [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Workforce Excellence [Member] | Reportable Geographical Components [Member] | Americas [Member]
Disaggregation of Revenue [Line Items]
Revenue	213,938	198,653	198,393
Workforce Excellence [Member] | Reportable Geographical Components [Member] | EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenue	91,764	100,296	97,274
Workforce Excellence [Member] | Reportable Geographical Components [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue	30,688	29,828	30,173
Workforce Excellence [Member] | Geography Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	(19,576)	(20,518)	(19,925)
Business Transformation Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	198,346	200,949	184,644
Business Transformation Services [Member] | Automotive Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	105,431	101,285	101,627
Business Transformation Services [Member] | Financial and Insurance Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	12,303	16,339	15,792
Business Transformation Services [Member] | Manufacturing Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	16,156	17,134	8,625
Business Transformation Services [Member] | Energy, Oil and Gas Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	4,752	2,429	3,258
Business Transformation Services [Member] | U.S. Government Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	8,782	9,475	10,191
Business Transformation Services [Member] | UK Government Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Business Transformation Services [Member] | Information and Communication Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	9,510	10,490	7,942
Business Transformation Services [Member] | Aerospace Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,683	6,549	1,189
Business Transformation Services [Member] | Electronics Semiconductor Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	857	1,069	821
Business Transformation Services [Member] | Life Sciences Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	8,750	9,377	10,433
Business Transformation Services [Member] | Other Market Sector [Member]
Disaggregation of Revenue [Line Items]
Revenue	28,122	26,802	24,766
Business Transformation Services [Member] | Managed Learning Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0
Business Transformation Services [Member] | Engineering and Technical Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0
Business Transformation Services [Member] | Sales Enablement [Member]
Disaggregation of Revenue [Line Items]
Revenue	103,740	101,196	101,939
Business Transformation Services [Member] | Organizational Development [Member]
Disaggregation of Revenue [Line Items]
Revenue	94,606	99,753	82,705
Business Transformation Services [Member] | Reportable Geographical Components [Member] | Americas [Member]
Disaggregation of Revenue [Line Items]
Revenue	165,807	175,027	164,727
Business Transformation Services [Member] | Reportable Geographical Components [Member] | EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenue	38,171	30,461	22,603
Business Transformation Services [Member] | Reportable Geographical Components [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,634	376	450
Business Transformation Services [Member] | Geography Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ (8,266)	$ (4,915)	$ (3,136)

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Thousands	Aug. 31, 2017	Apr. 01, 2017	Feb. 01, 2017	Oct. 01, 2016	Jul. 31, 2017	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High						$ 11,500	$ 11,500
Purchase price allocation:
Goodwill						176,124	$ 176,124	$ 144,835	$ 127,772
Acquired finite-lived intangible assets, weighted average useful life							6 years 2 months
Contingent Consideration Liability, Payments							$ 0
Contingent Consideration Payments							0	$ 4,657	$ 2,244
YouTrain [Member]
Business Acquisition [Line Items]
Cash purchase price	$ 4,898
Fair value of contingent consideration	0
Total purchase price	5,078
Purchase price allocation:
Fixed assets	215
Goodwill	3,268
Total assets	5,703
Accrued expenses	348
Deferred revenue	28
Deferred tax liability	249
Total liabilities	625
Net assets acquired	5,078
YouTrain [Member] | Marketing-Related Intangible Assets [Member]
Purchase price allocation:
Intangible assets	0
YouTrain [Member] | Technology-Based Intangible Assets [Member]
Purchase price allocation:
Intangible assets	0
Maverick Solutions [Member]
Business Acquisition [Line Items]
Cash purchase price				$ 4,639
Number of Twelve-Month Earnings Target Measurement Periods				2 years
Fair value of contingent consideration				$ 5,166
Total purchase price				9,805
Purchase price allocation:
Fixed assets				63
Goodwill				8,111
Total assets				10,166
Accrued expenses				38
Deferred revenue				323
Total liabilities				361
Net assets acquired				9,805
Contingent Consideration Liability, Payments							0
Contingent Consideration Payments						4,100
Maverick Solutions [Member] | Customer-related intangible assets [Member]
Purchase price allocation:
Intangible assets				$ 1,219
Acquired finite-lived intangible assets, weighted average useful life				4 years
Maverick Solutions [Member] | Marketing-Related Intangible Assets [Member]
Purchase price allocation:
Intangible assets				$ 124
Acquired finite-lived intangible assets, weighted average useful life				2 years
Maverick Solutions [Member] | Technology-Based Intangible Assets [Member]
Purchase price allocation:
Intangible assets				$ 649
Acquired finite-lived intangible assets, weighted average useful life				3 years
CLS [Member] [Member]
Business Acquisition [Line Items]
Cash purchase price	436
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	2,200
Fair value of contingent consideration	888
Total purchase price	1,324
Purchase price allocation:
Fixed assets	0
Goodwill	1,090
Total assets	1,343
Accrued expenses	19
Deferred revenue	0
Deferred tax liability	0
Total liabilities	19
Net assets acquired	1,324
Contingent Consideration Liability, Payments							0
CLS [Member] [Member] | Marketing-Related Intangible Assets [Member]
Purchase price allocation:
Intangible assets	0
CLS [Member] [Member] | Technology-Based Intangible Assets [Member]
Purchase price allocation:
Intangible assets	$ 0
Emantras [Member]
Business Acquisition [Line Items]
Cash purchase price		$ 3,191
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		300
Fair value of contingent consideration		220
Total purchase price		3,411
Purchase price allocation:
Fixed assets		50
Goodwill		3,156
Total assets		4,024
Accrued expenses		558
Deferred revenue		55
Deferred tax liability		0
Total liabilities		613
Net assets acquired		3,411
Contingent Consideration Liability, Payments							0
Emantras [Member] | Marketing-Related Intangible Assets [Member]
Purchase price allocation:
Intangible assets		0
Emantras [Member] | Technology-Based Intangible Assets [Member]
Purchase price allocation:
Intangible assets		$ 0
McKinney Rogers [Member]
Business Acquisition [Line Items]
Cash purchase price			$ 3,259
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 18,000			$ 8,000	8,000
Number of Twelve-Month Earnings Target Measurement Periods			3 years
Business Combination, Contingent Consideration, Term of Earnings Targets			5 months
Fair value of contingent consideration			$ 4,505
Total purchase price			7,764
Purchase price allocation:
Fixed assets			0
Goodwill			5,196
Total assets			8,674
Accrued expenses			44
Deferred revenue			866
Deferred tax liability			0
Total liabilities			910
Net assets acquired			7,764
Contingent Consideration Liability, Payments							$ 0
McKinney Rogers [Member] | Marketing-Related Intangible Assets [Member]
Purchase price allocation:
Intangible assets			$ 121
Acquired finite-lived intangible assets, weighted average useful life			3 years
McKinney Rogers [Member] | Technology-Based Intangible Assets [Member]
Purchase price allocation:
Intangible assets			$ 2,704
Target Earnings Measurement Period One [Member] | McKinney Rogers [Member]
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Amount Contingent Upon Achievement of Certain Earnings Targets			6,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability					$ 1,000
Target Earnings Measurement Period Two [Member] | McKinney Rogers [Member]
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Amount Contingent Upon Achievement of Certain Earnings Targets			$ 12,000

Acquisitions (Details 1)

Acquisitions (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Purchase price allocation:
Goodwill	$ 176,124	$ 144,835	$ 127,772

Acquisitions (Details 2)

Acquisitions (Details 2) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	$ 4,225
Contingent Consideration Liability, Additions	905
2016 Payments	0
Change in Fair Value of Contingent Consideration	(4,438)
Foreign Currency Translation	(15)
Ending balance of liability	677
IC Axon [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	0
Contingent Consideration Liability, Additions	905
2016 Payments
Change in Fair Value of Contingent Consideration	(311)
Foreign Currency Translation	0
Ending balance of liability	594
Maverick Solutions [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	1,979
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(1,979)
Foreign Currency Translation	0
Ending balance of liability	0
McKinney Rogers [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	1,501
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(1,418)
Foreign Currency Translation	0
Ending balance of liability	83
Emantras [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	76
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(76)
Foreign Currency Translation	0
Ending balance of liability	0
CLS [Member] [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	669
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(654)
Foreign Currency Translation	(15)
Ending balance of liability	$ 0

Acquisitions (Details Textual)

Acquisitions (Details Textual) - USD ($) $ in Thousands

Nov. 30, 2018

Aug. 07, 2018

May 01, 2018

Jan. 02, 2018

Aug. 31, 2017

Apr. 01, 2017

Feb. 01, 2017

Oct. 01, 2016

Mar. 01, 2016

Dec. 31, 2018

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

6 years 2 months

Goodwill

$ 176,124

$ 176,124

$ 144,835

$ 127,772

Accounts payable and accrued liability

600

600

2,700

Business acquisition contingent consideration, other long term liability

100

100

$ 1,500

Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High

11,500

11,500

TTi Global [Member] [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 14,195

Fair value of contingent consideration

0

Goodwill

3,327

Business Combination, Consideration Transferred

14,195

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

1,777

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

15,926

Fixed assets

305

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

26,233

Accrued expenses

9,249

Deferred revenue

395

Deferred tax liability

2,394

Total liabilities

12,038

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

$ 14,195

TTi Global [Member] [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

9 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 4,444

TTi Global [Member] [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

1 year

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 454

TTi (Europe) Limited [Member] [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 3,000

Fair value of contingent consideration

0

Goodwill

2,179

Business Combination, Consideration Transferred

3,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

125

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

1,684

Fixed assets

9

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

4,804

Accrued expenses

1,609

Deferred revenue

126

Deferred tax liability

69

Total liabilities

1,804

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

$ 3,000

TTi (Europe) Limited [Member] [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

9 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 762

TTi (Europe) Limited [Member] [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 45

IC Axon [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 30,535

Fair value of contingent consideration

905

Goodwill

21,613

Business Combination, Consideration Transferred

31,440

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

538

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

3,110

Fixed assets

368

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

36,233

Accrued expenses

983

Deferred revenue

979

Deferred tax liability

2,831

Total liabilities

4,793

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

31,440

Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High

$ 3,500

3,500

3,500

IC Axon [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

8 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 10,365

IC Axon [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

3 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 239

Hula Partners [Member] [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 10,000

Fair value of contingent consideration

0

Goodwill

8,527

Business Combination, Consideration Transferred

10,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

0

Fixed assets

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

10,000

Accrued expenses

0

Deferred revenue

0

Deferred tax liability

0

Total liabilities

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

$ 10,000

Hula Partners [Member] [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

4 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 1,367

Hula Partners [Member] [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

2 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 106

YouTrain [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 4,898

Consideration transferred, completion accounts payment

200

Fair value of contingent consideration

0

Goodwill

3,268

Business Combination, Consideration Transferred, Estimated Completion Accounts Payment

180

Business Combination, Consideration Transferred

5,078

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

673

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

234

Fixed assets

215

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

5,703

Accrued expenses

348

Deferred revenue

28

Deferred tax liability

249

Total liabilities

625

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

5,078

YouTrain [Member] | Technology-Based Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 0

YouTrain [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

5 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 1,313

YouTrain [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

0

CLS [Member] [Member]

Business Acquisition [Line Items]

Cash purchase price

436

Fair value of contingent consideration

888

Goodwill

1,090

Business Combination, Consideration Transferred, Estimated Completion Accounts Payment

0

Business Combination, Consideration Transferred

1,324

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

0

Fixed assets

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

1,343

Accrued expenses

19

Deferred revenue

0

Deferred tax liability

0

Total liabilities

19

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

1,324

Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High

2,200

CLS [Member] [Member] | Technology-Based Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 0

CLS [Member] [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

3 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 253

CLS [Member] [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 0

Emantras [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 3,191

Fair value of contingent consideration

220

Goodwill

3,156

Business Combination, Consideration Transferred, Estimated Completion Accounts Payment

0

Business Combination, Consideration Transferred

3,411

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

0

Fixed assets

50

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

4,024

Accrued expenses

558

Deferred revenue

55

Deferred tax liability

0

Total liabilities

613

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

3,411

Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High

300

Emantras [Member] | Technology-Based Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 0

Emantras [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

4 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 818

Emantras [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 0

Jencal Training [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 2,500

Additional consideration contingent on achieving certain earnings targets

200

Goodwill

1,800

Jencal Training [Member] | Intangible Assets [Member]

Business Acquisition [Line Items]

Amortizable intangible assets

$ 1,400

Acquired finite-lived intangible assets, weighted average useful life

4 years

Maverick Solutions [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 4,639

Fair value of contingent consideration

5,166

Additional consideration contingent on achieving certain earnings targets

10,000

Goodwill

8,111

Business Combination, Consideration Transferred

9,805

Fixed assets

63

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

10,166

Accrued expenses

38

Deferred revenue

323

Total liabilities

361

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

$ 9,805

Maverick Solutions [Member] | Technology-Based Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

3 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 649

Maverick Solutions [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

2 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 124

McKinney Rogers [Member]

Business Acquisition [Line Items]

Cash purchase price

$ 3,259

Fair value of contingent consideration

4,505

Goodwill

5,196

Business Combination, Consideration Transferred, Estimated Completion Accounts Payment

0

Business Combination, Consideration Transferred

7,764

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables

0

Fixed assets

0

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

8,674

Accrued expenses

44

Deferred revenue

866

Deferred tax liability

0

Total liabilities

910

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

7,764

Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High

18,000

$ 8,000

$ 8,000

McKinney Rogers [Member] | Technology-Based Intangible Assets [Member]

Business Acquisition [Line Items]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 2,704

McKinney Rogers [Member] | Customer-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

5 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 653

McKinney Rogers [Member] | Marketing-Related Intangible Assets [Member]

Business Acquisition [Line Items]

Acquired finite-lived intangible assets, weighted average useful life

3 years

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

$ 121

Acquisitions (Details 3)

Acquisitions (Details 3) - USD ($) $ in Thousands	Aug. 07, 2018	May 01, 2018	Jan. 02, 2018	Aug. 31, 2017	Feb. 01, 2017	Mar. 01, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Contingent consideration							$ 677	$ 4,225
Business acquisition contingent consideration, other long term liability							100	1,500
Contingent Consideration Payments							0	4,657	$ 2,244
Contingent Consideration Liability, Payments							0
Original range of potential undiscounted payments maximum							11,500
Business Combination, Contingent Consideration Arrangements, Range Of Outcomes, Value, High, Year Two							7,500
Business Combination, Contingent Consideration Arrangements, Range Of Outcomes, Value, High, Thereafter							$ 4,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life							6 years 2 months
Goodwill							$ 176,124	144,835	$ 127,772
Schedule of Business Acquisitions, by Acquisition							The following table summarizes the purchase prices and purchase price allocations for the acquisitions completed during the year ended December 31, 2017. A description of the acquired businesses is summarized below the table. Acquired company YouTrain CLS Emantras McKinney Rogers Acquisition date 8/31/2017 8/31/2017 4/1/2017 2/1/2017 Cash purchase price $ 4,898 $ 436 $ 3,191 $ 3,259 Fair value of contingent consideration — 888 220 4,505 Working capital adjustment 180 — — — Total purchase price $ 5,078 $ 1,324 $ 3,411 $ 7,764 Purchase price allocation: Cash $ 673 $ — $ — $ — Accounts receivable and other assets 234 — — — Fixed assets 215 — 50 — Technology-related intangible assets — — — 2,704 Customer-related intangible assets 1,313 253 818 653 Marketing-related intangible assets (tradename) — — — 121 Goodwill 3,268 1,090 3,156 5,196 Total assets 5,703 1,343 4,024 8,674 Accounts payable and accrued expenses 348 19 558 44 Deferred revenue 28 — 55 866 Deferred tax liability 249 — — — Total liabilities 625 19 613 910 Net assets acquired $ 5,078 $ 1,324 $ 3,411 $ 7,764 The following table summarizes the purchase price and purchase price allocation for the acquisition (dollars in thousands). Cash purchase price $ 4,639 Fair value of contingent consideration 5,166 Total purchase price $ 9,805 Amortization Purchase price allocation: Period Fixed assets $ 63 Customer-related intangible assets 1,219 4 years Marketing-related intangible assets (tradename) 124 2 years Technology-related intangible assets 649 3 years Goodwill 8,111 Total assets 10,166 Accrued expenses 38 Deferred revenue 323 Total liabilities 361 Net assets acquired $ 9,805
Contingent Consideration Liability, Additions							$ 905
Increase Decrease In Fair Value Of Contingent Consideration							(4,438)
Contingent Consideration Foreign Current Translation							(15)
Hula Partners [Member] [Member]
Business Acquisition [Line Items]
Cash purchase price			$ 10,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables			0
Fixed assets			0
Goodwill			8,527
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			10,000
Deferred tax liability			0
Total liabilities			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			10,000
Fair value of contingent consideration			0
Business Combination, Consideration Transferred			10,000
IC Axon [Member]
Business Acquisition [Line Items]
Cash purchase price		$ 30,535
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		538
Contingent consideration							594	0
Contingent Consideration Liability, Payments
Original range of potential undiscounted payments maximum		3,500					3,500
Business Combination, Contingent Consideration Arrangements, Range Of Outcomes, Value, High, Year Two							3,500
Business Combination, Contingent Consideration Arrangements, Range Of Outcomes, Value, High, Thereafter							0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		3,110
Fixed assets		368
Goodwill		21,613
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		36,233
Deferred tax liability		2,831
Total liabilities		4,793
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		31,440
Fair value of contingent consideration		905
Business Combination, Consideration Transferred		31,440
Contingent Consideration Liability, Additions							905
Increase Decrease In Fair Value Of Contingent Consideration							(311)
Contingent Consideration Foreign Current Translation							0
IC Axon [Member] | Minimum [Member]
Business Acquisition [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low							0
IC Axon [Member] | Maximum [Member]
Business Acquisition [Line Items]
Original range of potential undiscounted payments maximum							3,500
TTi (Europe) Limited [Member] [Member]
Business Acquisition [Line Items]
Cash purchase price	$ 3,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	125
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	1,684
Fixed assets	9
Goodwill	2,179
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	4,804
Deferred tax liability	69
Total liabilities	1,804
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	3,000
Fair value of contingent consideration	0
Business Combination, Consideration Transferred	3,000
McKinney Rogers [Member]
Business Acquisition [Line Items]
Cash purchase price					$ 3,259
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents					0
Contingent consideration							83	1,501
Contingent Consideration Liability, Payments							0
Original range of potential undiscounted payments maximum					18,000		8,000
Business Combination, Contingent Consideration Arrangements, Range Of Outcomes, Value, High, Year Two							4,000
Business Combination, Contingent Consideration Arrangements, Range Of Outcomes, Value, High, Thereafter							4,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables					0
Fixed assets					0
Goodwill					5,196
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					8,674
Deferred tax liability					0
Total liabilities					910
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					7,764
Fair value of contingent consideration					4,505
Business Combination, Consideration Transferred					7,764
Contingent Consideration Liability, Additions							0
Increase Decrease In Fair Value Of Contingent Consideration							(1,418)
Contingent Consideration Foreign Current Translation							0
McKinney Rogers [Member] | Minimum [Member]
Business Acquisition [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low							0
McKinney Rogers [Member] | Maximum [Member]
Business Acquisition [Line Items]
Original range of potential undiscounted payments maximum							18,000
CLS [Member] [Member]
Business Acquisition [Line Items]
Cash purchase price				$ 436
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents				0
Contingent consideration							0	$ 669
Contingent Consideration Liability, Payments							0
Original range of potential undiscounted payments maximum				2,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables				0
Fixed assets				0
Goodwill				1,090
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				1,343
Deferred tax liability				0
Total liabilities				19
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				1,324
Fair value of contingent consideration				888
Business Combination, Consideration Transferred				1,324
Contingent Consideration Liability, Additions							0
Increase Decrease In Fair Value Of Contingent Consideration							(654)
Contingent Consideration Foreign Current Translation							$ (15)
Jencal Training [Member]
Business Acquisition [Line Items]
Cash purchase price						$ 2,500
Maximum contingent consideration due in Total						200
Goodwill						$ 1,800
Marketing-Related Intangible Assets [Member] | Hula Partners [Member] [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 106
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			2 years
Marketing-Related Intangible Assets [Member] | IC Axon [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		$ 239
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		3 years
Marketing-Related Intangible Assets [Member] | TTi (Europe) Limited [Member] [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 45
Marketing-Related Intangible Assets [Member] | McKinney Rogers [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					$ 121
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					3 years
Marketing-Related Intangible Assets [Member] | CLS [Member] [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				$ 0

Goodwill & Other Intangible A_3

Goodwill & Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Goodwill	$ 191,541	$ 160,252	$ 143,189
Accumulated impairment losses	(15,417)	(15,417)	(15,417)
Acquisitions	35,646	12,710
Foreign currency translation	(4,357)	4,353
Total	176,124	144,835	127,772
Professional and Technical Services [Member]
Goodwill [Roll Forward]
Goodwill	58,573	45,438	38,844
Accumulated impairment losses	(6,367)	(6,367)	(6,367)
Acquisitions	14,033	6,286
Foreign currency translation	(898)	308
Total	52,206	39,071	32,477
Sandy Training and Marketing [Member]
Goodwill [Roll Forward]
Goodwill	132,968	114,814	104,345
Accumulated impairment losses	(9,050)	(9,050)	(9,050)
Acquisitions	21,613	6,424
Foreign currency translation	(3,459)	4,045
Total	$ 123,918	$ 105,764	$ 95,295

Goodwill & Other Intangible A_4

Goodwill & Other Intangible Assets (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 31,460	$ 20,628
Accumulated Amortization	(10,527)	(12,265)
Net Carrying Amount	20,933	8,363
Customer-related intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	26,524	16,330
Accumulated Amortization	(8,547)	(11,140)
Net Carrying Amount	17,977	5,190
Intellectual property and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,936	4,298
Accumulated Amortization	(1,980)	(1,125)
Net Carrying Amount	$ 2,956	$ 3,173

Goodwill & Other Intangible A_5

Goodwill & Other Intangible Assets (Details 2) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
2017	$ 4,968
2018	3,844
2019	3,211
2020	2,027
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,799
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	5,084
Total	$ 20,933	$ 8,363

Goodwill & Other Intangible A_6

Goodwill & Other Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 4.6	$ 4	$ 3.5
Acquired finite-lived intangible assets, weighted average useful life	6 years 2 months

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Machinery, equipment and vehicles	$ 18,121	$ 16,078
Furniture and fixtures	3,779	3,090
Leasehold improvements	2,369	1,967
Buildings	311	331
Property, Plant and Equipment, Gross, Total	24,580	21,466
Accumulated depreciation and amortization	(18,721)	(16,343)
Property, Plant and Equipment, Net, Total	$ 5,859	$ 5,123

Property, Plant and Equipment_3

Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 2.2	$ 2.6	$ 2.9

Accounts Payable and Accrued _3

Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Trade accounts payable	$ 40,969	$ 24,189
Accrued salaries, vacation and benefits	21,550	22,205
Other accrued expenses	28,372	26,256
Accrued contingent consideration	594	2,724
Negative cash book balance	1,769	2,906
Accounts Payable and Accrued Liabilities, Current, Total	$ 93,254	$ 78,280

Debt (Details Textual)

Debt (Details Textual) - USD ($)	Nov. 30, 2018	Dec. 31, 2018	Apr. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 01, 2017
Short-term Debt [Line Items]
Long-term debt		$ 116,500,000		$ 116,500,000	$ 16,000,000
Unamortized debt issuance costs		1,200,000		1,200,000
Derivative, notional amount			$ 20,000,000				$ 37,000,000
Derivative, fixed interest rate							1.59%
Cash proceeds from termination of interest rate derivatives				544,000	0	$ 0
Payments for hedge			$ 500,000	0	$ 474,000	$ 0
Interest Rate Swap [Member]
Short-term Debt [Line Items]
Reclassified from accumulated oci into income				100,000
Cash proceeds from termination of interest rate derivatives		114,000
Interest Rate Cap [Member]
Short-term Debt [Line Items]
Reclassified from accumulated oci into income				100,000
Cash proceeds from termination of interest rate derivatives		430,000
London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Derivative, cap interest rate			2.00%
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Available borrowing capacity		$ 16,800,000		$ 16,800,000
Interest rate during period (percent)				4.00%	2.80%
Credit Agreement [Member] | Base Rate [Member] | Minimum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	25.00%
Credit Agreement [Member] | Base Rate [Member] | Maximum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	125.00%
Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	1.00%
Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	125.00%
Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	225.00%
Credit Agreement [Member] | Overnight Bank Funding Rate [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	50.00%
Credit Agreement [Member] | Revolving Credit Facility [Member] | Line of Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 200,000,000
Credit Agreement [Member] | Revolving Credit Facility [Member] | Foreign Line of Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	20,000,000
Credit Agreement [Member] | Revolving Credit Facility [Member] | Accordion Feature [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	100,000,000
Credit Agreement [Member] | Revolving Credit Facility [Member] | Letter of Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	20,000,000
Credit Agreement [Member] | Revolving Credit Facility [Member] | Swing Line Loan Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 20,000,000

Employee Benefit Plan (Details

Employee Benefit Plan (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items]
Value of contributed shares	$ 2,960	$ 2,725	$ 2,708
Domestic Plan [Member] | GP Retirement Savings Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Discretionary contribution shares	162,572	104,751	111,326
Value of contributed shares	$ 3,000		$ 2,700
Foreign Plan [Member] | Defined Contribution Pension Schemes [Member]
Defined Contribution Plan Disclosure [Line Items]
Contributed cash	$ 2,700	$ 2,500	$ 2,200

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income before income taxes:
Domestic	$ 5,577	$ 2,901	$ 13,988
Foreign	9,186	16,788	16,046
Total income before income taxes	14,763	19,689	30,034
Current:
Federal	388	3,210	5,511
State and local	378	256	1,152
Foreign	3,285	3,645	4,885
Total current	4,051	7,111	11,548
Deferred:
Federal	813	(241)	(1,039)
State and local	258	(176)	56
Foreign	(195)	104	(778)
Total deferred	876	(313)	(1,761)
Total income tax expense	$ 4,927	$ 6,798	$ 9,787

Income Taxes (Details 1)

Income Taxes (Details 1)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal income tax rate	21.00%	35.00%	35.00%
State and local taxes net of federal benefit	1.90%	0.20%	2.40%
Domestic production deduction	(0.00%)	(1.10%)	(0.60%)
Foreign tax rate differential	1.80%	(8.80%)	(5.80%)
Permanent differences	2.70%	(6.20%)	4.80%
Other	2.60%	(0.90%)	(3.20%)
Global Intangible Low-taxed Income	1.50%	0.00%	0.00%
Tax Cuts and Jobs Act of 2017	1.90%	16.30%	0.00%
Effective tax rate	33.40%	34.50%	32.60%

Income Taxes (Details 2)

Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for doubtful accounts	$ 531	$ 559
Accrued liabilities and other	2,564	2,381
Stock-based compensation expense	296	599
Net federal, state and foreign operating loss carryforwards	1,953	1,432
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	266	0
Deferred tax assets	5,610	4,971
Valuation allowance on deferred tax assets	(1,385)	(1,502)
Deferred tax liabilities:
Other	1,181	208
Intangible assets, property and equipment, principally due to difference in depreciation and amortization	10,784	5,312
Net deferred tax liabilities	$ (7,740)	$ (2,051)

Income Taxes (Details Textual)

Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax Cuts and Jobs Act of 2017, income tax expense	$ 3,200
Deferred tax asset, income tax expense	1,400
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings		$ 4,900	$ 4,600
Operating loss carryforwards	8,800	8,800
Management placed valuation allowance	$ 1,385	1,385	1,502
Income tax expense		$ 4,927	$ 6,798	$ 9,787
Effective Income Tax Rate Reconciliation, Percent		33.40%	34.50%	32.60%

Restructuring (Details)

Restructuring (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)segment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Number of operating segments | segment	2
Severance costs		$ 2,900	$ 3,300
Restructuring reserve	$ 2,840	1,857	2,840
Restructuring charges		2,930	3,317	$ 0
Payments for Restructuring		(3,913)
Accounts Payable and Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	2,200	1,500	2,200
Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	600	400	600
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	0	591	0
Restructuring charges		1,252
Payments for Restructuring		(661)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 2,840	1,266	$ 2,840
Restructuring charges		1,678
Payments for Restructuring		$ (3,252)

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 1,350	$ 3,589	$ 3,229
Cost of revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	992	2,832	2,545
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 358	$ 757	$ 684

Stock-Based Compensation (Det_2

Stock-Based Compensation (Details 1) - Non Qualified Stock Option [Member]	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, Number of options | shares	3,000
Granted, Number of options | shares	0
Exercised, Number of options | shares	(500)
Forfeited, Number of options | shares	0
Expired, Number of options | shares	(2,500)
Outstanding at end of period, Number of options | shares	0
Exercisable at end of period, Number of options | shares	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period, Weighted average exercise price (in dollars per share) | $ / shares	$ 19.38
Granted, Weighted average exercise price (in dollars per share) | $ / shares	0
Exercised, Weighted average exercise price (in dollars per share) | $ / shares	19.38
Forfeited, Weighted average exercise price (in dollars per share) | $ / shares	0
Expired, Weighted average exercise price (in dollars per share) | $ / shares	19.38
Outstanding at end of period, Weighted average exercise price (in dollars per share) | $ / shares	0
Exercisable at end of period, Weighted average exercise price (in dollars per share) | $ / shares	$ 0
Outstanding at end of period, Weighted average remaining contractual term	0 years
Exercisable at end of period, Weighted average remaining contractual term	0 years
Outstanding at end of period, Aggregate intrinsic value | $	$ 0
Exercisable at end of period, Aggregate intrinsic value | $	$ 0

Stock-Based Compensation (Det_3

Stock-Based Compensation (Details 2)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding and unvested, beginning of period (in shares) | shares	148,234
Granted (in shares) | shares	77,712
Vested (in shares) | shares	(87,970)
Forfeited (in shares) | shares	(5,223)
Outstanding and unvested, end of period (in shares) | shares	132,753
Weighted average grant date fair value
Outstanding and unvested, beginning of period, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 26.79
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	17.96
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	27.92
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	25.77
Outstanding and unvested, end of period, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 20.91

Stock-Based Compensation (Det_4

Stock-Based Compensation (Details 3) - Performance Shares [Member]	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Number of Units (in shares)
Outstanding and unvested, beginning of period | shares	189,068
Granted | shares	141,851
Vested | shares	0
Forfeited | shares	(63,956)
Outstanding and unvested, end of period | shares	266,963
Weighted average grant date fair value
Outstanding and unvested, beginning of period (in dollars per share) | $ / shares	$ 27.68
Granted (in dollars per share) | $ / shares	22.55
Vested (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	32.50
Outstanding and unvested, end of period (in dollars per share) | $ / shares	$ 23.80

Stock-Based Compensation (Det_5

Stock-Based Compensation (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred income tax expense (benefit)	$ 876	$ (313)	$ (1,761)
Proceeds from issuance of common stock	100	$ 100	$ 100
Number of stock options settled for fully vested shares		55,050	30,700
Number of shares issued in settlement of stock option		13,482	9,976
Intrinsic value of stock options exercised	100	$ 700	$ 500
Income tax benefits	$ 4,927	6,798	9,787
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	77,712
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred income tax expense (benefit)	$ 300	1,200	1,200
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income tax benefits	$ (300)	100	100
2011 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	1,355,764
Shares reserved for future issuance	444,669
Number of outstanding awards	399,716
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 1,800
Weighted average remaining service period of nonvested awards	2 years 20 days
Vesting term	5 years
Total intrinsic value of vested RSU's	$ 1,300	$ 2,700	$ 1,800
Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 200
Weighted average remaining service period of nonvested awards	1 year 11 months 18 days

Common Stock (Details Textual)

Common Stock (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2009
Common Stock [Line Items]
Common stock, shares outstanding	16,619,740
Repurchases of common stock in the open market	$ 7,993,000	$ 4,302,000	$ 7,959,000
Shares sold in private placement				2,857,143
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01		$ 0.01
Securities purchase agreement purchase price				$ 20,000,000
Beneficial ownership maximum percentage				23.00%
Purchase price percentage	1.00%
Shareholders indemnification amount	$ 25,000
Sagard [Member]
Common Stock [Line Items]
Share price (in dollars per share)				$ 7
Stock beneficially owned	3,639,367
Stock beneficial ownership percentage	21.90%
Maximum [Member]
Common Stock [Line Items]
Liquidated damages amount	$ 2,400,000
Stock Repurchase Program [Member]
Common Stock [Line Items]
Stock repurchased during period (shares)	354,000	182,000	340,000
Repurchases of common stock in the open market	$ 8,000,000	$ 4,300,000	$ 8,000,000
Remaining authorized repurchase amount	$ 3,800,000
Equity Compensation Award [Member]
Common Stock [Line Items]
Shares reserved for future issuance	399,716
2011 Plan [Member]
Common Stock [Line Items]
Shares reserved for future issuance	444,669

Business Segments (Details)

Business Segments (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018USD ($)practice_area	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2018USD ($)segmentpractice_area	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Segment Reporting [Abstract]
Number of Reportable Segments | segment									2
Segment Reporting Information [Line Items]
Number of Practice Areas | practice_area	4								4
Revenue	$ 132,871	$ 123,566	$ 133,691	$ 125,032	$ 131,503	$ 124,097	$ 131,161	$ 122,447	$ 515,160	$ 509,208	$ 490,559
Total gross profit	$ 18,292	$ 19,199	$ 22,573	$ 17,679	$ 21,558	$ 18,646	$ 22,435	$ 19,388	77,743	82,027	80,157
General and Administrative Expense									54,848	55,753	47,162
Selling and Marketing Expense									4,798	1,666	1,435
Restructuring charges									2,930	3,317	0
Gain (loss) on change in fair value of contingent consideration, net									(4,438)	(1,620)	136
Operating income									19,605	22,911	31,424
Interest expense									(2,945)	(3,132)	(1,568)
Other (expense) income									(1,897)	(90)	178
Income before income taxes									$ 14,763	19,689	30,034
Workforce Excellence [Member]
Segment Reporting Information [Line Items]
Number of Practice Areas | practice_area	2								2
Revenue									$ 316,814	308,259	305,915
Total gross profit									$ 50,875	52,958	53,355
Business Transformation Services [Member]
Segment Reporting Information [Line Items]
Number of Practice Areas | practice_area	2								2
Revenue									$ 198,346	200,949	184,644
Total gross profit									$ 26,868	$ 29,069	$ 26,802

Business Segments (Details 1)

Business Segments (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Identifiable assets:
Total assets	$ 434,738	$ 365,007
Workforce Excellence [Member]
Identifiable assets:
Total assets	283,039	241,277
Business Transformation Services [Member]
Identifiable assets:
Total assets	$ 151,699	$ 123,730

Business Segments (Details 2)

Business Segments (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	$ 2,834	$ 2,734	$ 1,402
Depreciation and amortization:
Depreciation and amortization	7,921	6,974	6,462
Workforce Excellence [Member]
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	1,321	1,609	685
Depreciation and amortization:
Depreciation and amortization	3,664	2,643	3,116
Business Transformation Services [Member]
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	625	184	62
Depreciation and amortization:
Depreciation and amortization	2,827	2,770	1,994
Corporate and Other [Member]
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	888	941	655
Depreciation and amortization:
Depreciation and amortization	$ 1,430	$ 1,561	$ 1,352

Business Segments (Details 3)

Business Segments (Details 3) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenue	$ 132,871	$ 123,566	$ 133,691	$ 125,032	$ 131,503	$ 124,097	$ 131,161	$ 122,447	$ 515,160	$ 509,208	$ 490,559
United States
Segment Reporting Information [Line Items]
Revenue									344,720	350,632	339,329
United Kingdom
Segment Reporting Information [Line Items]
Revenue									92,059	100,466	93,017
Other Countries
Segment Reporting Information [Line Items]
Revenue									$ 78,381	$ 58,110	$ 58,213

Business Segments (Details 4)

Business Segments (Details 4) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)reporting_unitsegmentpractice_area	Dec. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment	2
Number of Reporting Units | reporting_unit	4
Number of Practice Areas | practice_area	4
Total assets	$ 434,738	$ 365,007
United States
Segment Reporting Information [Line Items]
Total assets	280,097	215,523
United Kingdom
Segment Reporting Information [Line Items]
Total assets	72,048	75,862
Other Countries
Segment Reporting Information [Line Items]
Total assets	$ 82,593	73,622
Workforce Excellence [Member]
Segment Reporting Information [Line Items]
Number of Practice Areas | practice_area	2
Total assets	$ 283,039	241,277
Business Transformation Services [Member]
Segment Reporting Information [Line Items]
Number of Practice Areas | practice_area	2
Total assets	$ 151,699	$ 123,730

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts Payable and Accrued Liabilities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 594	$ 2,724
Other Noncurrent Liabilities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	83	1,502
Other Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	88
Other Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Cap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	$ 0	$ 285

Commitments, Guarantees, and _3

Commitments, Guarantees, and Contingencies (Details) $ in Thousands	Dec. 31, 2018USD ($)
Other Commitments [Line Items]
2017	$ 10,646
2018	7,833
2019	5,520
2020	4,528
2021	3,898
Thereafter	8,671
Total	41,096
Real Property [Member]
Other Commitments [Line Items]
2017	9,727
2018	7,361
2019	5,264
2020	4,466
2021	3,864
Thereafter	8,671
Total	39,353
Machinery and Equipment [Member]
Other Commitments [Line Items]
2017	919
2018	472
2019	256
2020	62
2021	34
Thereafter	0
Total	$ 1,743

Commitments, Guarantees, and _4

Commitments, Guarantees, and Contingencies (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 10.9	$ 11	$ 9.8
Letters of credit outstanding	3.7
Other commitment	$ 12.4

Quarterly Information (unaudi_3

Quarterly Information (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Gross profit	$ 18,292	$ 19,199	$ 22,573	$ 17,679	$ 21,558	$ 18,646	$ 22,435	$ 19,388	$ 77,743	$ 82,027	$ 80,157
Net income	$ 385	$ 3,244	$ 3,575	$ 2,632	$ (339)	$ 3,281	$ 5,863	$ 4,086	$ 9,836	$ 12,891	$ 20,247
Earnings per share:
Basic earnings per share (in dollars per share)	$ 0.02	$ 0.20	$ 0.22	$ 0.16	$ (0.02)	$ 0.20	$ 0.35	$ 0.24	$ 0.59	$ 0.77	$ 1.21
Diluted (in dollars per share)	$ 0.02	$ 0.20	$ 0.22	$ 0.16	$ (0.02)	$ 0.19	$ 0.35	$ 0.24	$ 0.59	$ 0.76	$ 1.21
Revenue and gross profit reduction related to contract						$ 2,600
Revenue from External Customer [Line Items]
Revenue	$ 132,871	$ 123,566	$ 133,691	$ 125,032	$ 131,503	$ 124,097	$ 131,161	$ 122,447	$ 515,160	$ 509,208	$ 490,559
Loss on contract termination	1,800
Gross Profit [Member]
Revenue from External Customer [Line Items]
Loss on contract termination	$ 500
Selling, General and Administrative Expenses [Member]
Revenue from External Customer [Line Items]
Bad debt reserve										$ 1,300

Uncategorized Items - gpx-20181

Label	Element	Value
Accounting Standards Update 2016-09 [Member] | Additional Paid-in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 234,000