Innerworkings (INWK) 10-K 19 Mar 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 11, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	INNERWORKINGS INC
Entity Central Index Key	0001350381
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	INWK
Entity Common Stock, Shares Outstanding		52,271,946
Document Type	10-K
Amendment Flag	false
Amendment Description
Document Period End Date	Dec. 31, 2018
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2018
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 319,588,359
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Revenue	$ 1,121,551	$ 1,138,361	$ 1,094,402
Cost of Goods and Services Sold	866,453	862,903	831,838
Gross profit	255,098	275,458	262,564
Operating expenses:
Selling, general and administrative expenses	239,124	227,253	209,524
Depreciation and amortization	12,988	13,390	17,916
Change in fair value of contingent consideration	0	677	10,417
Goodwill Impairment	46,319	0	0
Intangible and other asset impairments	18,121	0	70
Restructuring charges	6,031	0	5,615
(Loss) income from operations	(67,485)	34,138	19,022
Other income (expense):
Interest income	218	97	86
Interest expense	(7,749)	(4,729)	(4,171)
Other, net	(1,616)	(1,788)	(154)
Total other expense	(9,147)	(6,420)	(4,239)
(Loss) income before taxes	(76,632)	27,718	14,783
(Benefit) provision for income tax	$ (461)	$ 11,288	$ 10,834
Basic earnings (loss) per share (in USD per share)	$ (1.46)	$ 0.31	$ 0.07
Diluted earnings (loss) per share (in USD per share)	$ (1.46)	$ 0.30	$ 0.07

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other comprehensive (loss) income, before tax:
Foreign currency translation adjustments	$ (5,234)	$ 1,732	$ (7,168)
Other comprehensive (loss) income, before tax	(5,234)	1,732	(7,168)
Provision (benefit) for income tax related to components of other comprehensive (loss) income	(154)	(12)	21
Other comprehensive (loss) income, net of tax	(5,080)	1,720	(7,147)
Comprehensive (loss) income	$ (81,251)	$ 18,150	$ (3,198)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 26,770	$ 30,562
Accounts receivable, net of allowance for doubtful accounts of $4,880 and $3,534, respectively	193,253	205,386
Unbilled revenue	46,474	50,016
Inventories	56,001	40,694
Prepaid expenses	16,982	18,565
Other current assets	34,106	37,865
Total current assets	373,586	383,088
Property and equipment, net	82,933	36,714
Intangibles and other assets:
Goodwill	152,158	199,946
Intangible assets, net	9,828	27,563
Deferred income taxes	1,195	691
Other assets	2,976	1,636
Total other assets	166,157	229,836
Total assets	622,676	649,638
Current liabilities:
Accounts payable	158,449	141,164
Line of Credit, Current	142,736	0
Other current liabilities	26,231	24,078
Deferred revenue	17,614	17,620
Accrued expenses	35,474	34,391
Total current liabilities	380,504	217,253
Revolving credit facility - noncurrent	0	128,398
Deferred income taxes	8,178	12,043
Other long-term liabilities	50,903	7,399
Total liabilities	439,585	365,093
Stockholders' equity:
Common stock, par value $0.0001 per share, 200,000 and 200,000 shares authorized, 64,495 and 64,075 shares issued, 51,807 and 54,055 shares outstanding, respectively	6	6
Additional paid-in capital	239,960	235,199
Treasury stock at cost, 12,688 and 10,020 shares, respectively	(81,471)	(55,873)
Accumulated other comprehensive loss	(24,309)	(19,229)
Retained earnings	48,905	124,442
Total stockholders' equity	183,091	284,545
Total liabilities and stockholders' equity	$ 622,676	$ 649,638

Consolidated Balance Sheets _Pa

Consolidated Balance Sheets [Parenthetical] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Balance Sheets Parenthetical [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 4,880	$ 3,534
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	64,495,000	64,075,000
Common stock, shares outstanding	51,807,000	54,055,000
Treasury stock at cost, shares	12,688,000	10,200,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning Balance at Dec. 31, 2015	$ 252,432	$ 6	$ (52,207)	$ 213,566	$ (13,802)	$ 104,869
Balance (in shares) at Dec. 31, 2015		62,645,000	9,547,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income						3,949
Total other comprehensive loss, net of tax	(7,147)
Comprehensive income (loss)	(3,198)
Issuance of common stock upon exercise of stock awards	$ 1,770	$ 0		1,770
Issuance of common stock upon exercise of stock awards (in shares)	420,000	746,000
Issuance of treasury shares as consideration for acquisition	$ 2,012		$ 2,749			(737)
Issuance of treasury shares as consideration for acquisition (in shares)			244,000
Excess tax benefit derived from stock award exercises	3,572			3,572
Stock based compensation expense	5,572			5,572
Ending Balance at Dec. 31, 2016	262,161	$ 6	$ (49,458)	224,480	(20,949)	108,082
Balance (in shares) at Dec. 31, 2016		63,391,000	9,303,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income						16,430
Total other comprehensive loss, net of tax	1,720				1,720
Comprehensive income (loss)	18,150
Issuance of common stock upon exercise of stock awards	$ 1,421	$ 0		1,421
Issuance of common stock upon exercise of stock awards (in shares)	428,000	648,000
Issuance of treasury shares as consideration for acquisition	$ 4,678	$ 0	$ 4,561	385		(269)
Issuance of treasury shares as consideration for acquisition (in shares)		(36,000)	405,000
Acquisition of treasury shares	$ (10,976)		$ (10,976)
Acquisition of treasury shares (in shares)	1,121,928		1,122,000
Stock based compensation expense	$ 6,820			6,820
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	2,291			2,093
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | Accounting Standards Update 2016-09 [Member]						198
Ending Balance at Dec. 31, 2017	284,545	$ 6	$ (55,873)	235,199	(19,229)	124,442
Balance (in shares) at Dec. 31, 2017		64,075,000	10,020,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income						(76,171)
Total other comprehensive loss, net of tax	(5,080)				(5,080)
Comprehensive income (loss)	(81,251)
Issuance of common stock upon exercise of stock awards	$ (541)	$ 0		(541)
Issuance of common stock upon exercise of stock awards (in shares)	662,000	420,000
Acquisition of treasury shares	$ (25,598)		$ (25,598)
Acquisition of treasury shares (in shares)	2,667,732		2,668,000
Stock based compensation expense	$ 5,302
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | Accounting Standards Update 2014-09 [Member]	482					482
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | Accounting Standards Update 2016-16 [Member]	152					152
Ending Balance at Dec. 31, 2018	$ 183,091	$ 6	$ (81,471)	$ 239,960	$ (24,309)	$ 48,905
Balance (in shares) at Dec. 31, 2018		64,495,000	12,688,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	$ 12,988	$ 13,390	$ 17,916
Stock-based compensation expense	5,302	6,820	5,572
Deferred income taxes	(4,441)	4,072	4,226
Change in fair value of contingent consideration liability	0	677	10,417
Goodwill Impairment	46,319	0	0
Impairment of Intangible Assets, Finite-lived	18,121	0	70
Bad debt provision	3,601	454	2,171
Implementation cost amortization	433	0	0
Excess tax benefit from exercise of stock awards	0	0	(4,030)
Other operating activities	255	210	210
Change in assets:
Accounts receivable and unbilled revenue	4,112	(41,877)	(2,651)
Inventories	(16,325)	(4,245)	6,355
Prepaid expenses and other assets	1,432	(13,547)	(8,206)
Change in liabilities:
Accounts payable	21,959	18,152	(38,408)
Accrued expenses and other liabilities	5,473	11,162	12,069
Net cash provided by operating activities	23,058	11,698	9,660
Cash flows from investing activities
Purchases of property and equipment	(11,263)	(12,483)	(13,319)
Proceeds from sale of property and equipment	122	0	0
Net cash used in investing activities	(11,141)	(12,483)	(13,319)
Cash flows from financing activities
Net borrowing (repayments) of revolving credit facility	14,539	(867)	8,739
Net short-term secured (repayments) borrowings	(1,525)	20,709	405
Repurchases of common stock	(25,689)	(10,885)	0
Payments of contingent consideration	0	(10,989)	(10,509)
Proceeds from exercise of stock options	545	2,663	2,636
Excess tax benefit from exercise of stock awards	0	0	4,030
Other financing activities	(1,606)	(1,156)	(866)
Net cash (used in) provided by financing activities	(13,736)	(525)	4,435
Effect of exchange rate changes on cash and cash equivalents	(1,973)	948	(607)
(Decrease) Increase in cash and cash equivalents	(3,792)	(362)	169
Cash and cash equivalents, beginning of period	30,562	30,924	30,755
Cash and cash equivalents, end of period	$ 26,770	$ 30,562	$ 30,924

Description of the Business

Description of the Business	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Business	Description of the Business InnerWorkings, Inc. (together with its subsidiaries, “the Company”) was incorporated in the state of Delaware on January 3, 2006. The Company is a leading global marketing execution firm for the world's most marketing intensive companies, including those companies in the Fortune 1000, across a wide range of industries. As a comprehensive outsourced enterprise solution, the Company leverages proprietary technology, an extensive supplier network, and deep domain expertise to streamline the creation, production, and distribution of marketing and promotional materials, signage and displays, retail experiences, events and promotions, and packaging across every major market worldwide. The items the Company sources are generally procured through the marketing supply chain and are referred to collectively as marketing materials. The Company’s technology and database of information is designed to capitalize on excess manufacturing capacity and other inefficiencies in the traditional marketing and print supply chain to obtain favorable pricing and to deliver high-quality products and services. During the third quarter of 2018, the Company changed its reportable segments. The Company is now organized and managed by the chief operating decision maker for purposes of allocating resources and assessing performance as three operating segments, North America, EMEA, and LATAM, which also represent the Company's reportable segments. Prior period amounts have been restated to reflect this change. See Note 19 for further information about the Company’s reportable segments.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation and Consolidation The consolidated financial statements include the accounts of InnerWorkings, Inc. and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Preparation of Financial Statements and Use of Estimates The preparation of the consolidated financial statements is in conformity with accounting principles generally accepted in the United States ("GAAP"). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. On an ongoing basis, the Company evaluates its estimates, including those related to product returns, allowance for doubtful accounts, inventories and inventory valuation, valuation and impairments of goodwill and long-lived assets, income taxes, accrued bonus, contingencies, stock-based compensation and litigation costs. The Company bases its estimates on historical experience and on other assumptions that its management believes are reasonable under the circumstances. These estimates form the basis for making judgments about the carrying value of assets and liabilities when those values are not readily apparent from other sources. Actual results can differ from those estimates. Foreign Currency Translation The Company determines the functional currency for its parent company and each of its subsidiaries by reviewing the currencies in which their respective operating activities occur. Assets and liabilities of these operations are translated into U.S. currency at the rates of exchange at the balance sheet date. Income and expense items are translated at average monthly rates of exchange. The resulting translation adjustments are included in accumulated other comprehensive income (loss), a separate component of stockholders’ equity. Transaction gains and losses arising from activities in other than the applicable functional currency are calculated using average exchange rates for the applicable period and reported in net income as a non-operating item in each period. Non-monetary balance sheet items denominated in a currency other than the applicable functional currency are translated using the historical rate. The net realized (losses) gains on foreign currency transactions were $(1.1) million , $(1.4) million and $0.6 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Highly Inflationary Accounting In the second quarter of 2018, the Argentinian economy was classified as highly inflationary under GAAP due to multiple years of increasing inflation, the devaluation of the Argentine peso ("ARS") and increasing borrowing rates. Effective July 1, 2018, the Company's Argentinian subsidiary is being accounted for under highly inflationary accounting rules, which principally means all transactions are recorded in U.S. dollars. The Company uses the official ARS exchange rate to translate the results of its Argentinian operations into U.S. dollars. As of December 31, 2018, the Company had a balance of net monetary assets denominated in ARS of approximately $50.7 million ARS, and the exchange rate was approximately $37.7 ARS per U.S. dollar. As of December 31, 2018, the Company recorded $0.1 million of favorable currency impacts recorded within Other income (expense). For the year ended December 31, 2018, the Company had revenue and gross margin of $4.1 million and $0.4 million , respectively at its Argentinian operations. Revenue Recognition Revenue is measured based on consideration specified in a contract with a customer and the Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer which may be at a point in time or over time. Unbilled revenue represents shipments or deliveries that have been made to customers for which the related account receivable has not yet been invoiced. Shipping and handling costs after control over a product has transferred to a customer are expensed as incurred and are included in cost of goods sold in the condensed consolidated statements of operations. In accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 606, Revenue from Contracts with Customers , the Company generally reports revenue on a gross basis because the Company typically controls the goods or services before transferring to the customer. Under these arrangements, the Company is primarily responsible for the fulfillment, including the acceptability, of the marketing materials and other products or services. In addition, the Company has reasonable discretion in establishing the price, and in some transactions, the Company also has inventory risk and is involved in the determination of the nature or characteristics of the marketing materials and products. In some arrangements, the Company is not primarily responsible for fulfilling the goods or services. In arrangements of this nature, the Company does not control the goods or services before they are transferred to the customer and such revenue is reported on a net basis. A portion of service revenue, including stand-alone creative and other services, may be earned over time; however, the difference from recognizing that revenue over time compared to a point in time (i.e., when the service is completed and accepted by the customer) is not material. Service revenue has not been material to the Company's overall revenue to date. The Company records taxes collected from customers and remitted to governmental authorities on a net basis. Cash and Cash Equivalents The Company considers all highly liquid investments purchased with a maturity of three months or less to be cash equivalents. Accounts Receivable Accounts receivable are uncollateralized customer obligations due under normal trade terms. Payment terms with customers are generally 30 to 90 days from the invoice date. Accounts receivable are stated at the amount billed to the customer, less an estimate for potential bad debts. Interest is not generally accrued on outstanding balances. The carrying amount of accounts receivable is reduced by an allowance that reflects management’s best estimate of the amounts that will not be collected. The Company estimates the collectability of its accounts receivable based on a combination of factors including, but not limited to, customer credit ratings and historical experience. In circumstances where the Company is aware of a specific customer’s inability to meet its financial obligations to the Company (e.g., bankruptcy filings or substantial downgrading of credit ratings), the Company provides allowances for bad debts against amounts due to reduce the net recognized receivable to the amount it reasonably believes will be collected. Aged receivables are reviewed on a regular basis and uncollectible accounts are written off when all reasonable collection efforts have been exhausted. Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined by the first-in, first-out method. Net realizable value is based upon an estimated average selling price reduced by estimated costs of disposal. Inventories primarily consist of purchased finished goods. Finished goods inventory includes consigned inventory held on behalf of customers as well as inventory held at third-party fulfillment centers and subcontractors. Property and Equipment Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. The estimated useful lives, by asset class, are as follows: Computer equipment 3 years Software, including internal-use software 1 to 5 years Office equipment 5 years Furniture and fixtures 7 years Leasehold improvements are depreciated using the straight-line method over the shorter of their estimated useful lives or the terms of the related leases. The Company reviews long-lived assets, including amortizable intangible assets, for realizability on an ongoing basis. Changes in depreciation, generally accelerated depreciation, are determined and recorded when estimates of the remaining useful lives or residual values of long-term assets change. The Company also reviews for impairment when conditions exist that indicate the carrying amount of the asset group may not be fully recoverable. In those circumstances, the Company performs undiscounted operating cash flow analyses to determine if an impairment exists. When testing for asset impairment, the Company groups assets and liabilities at the lowest level for which cash flows are separately identifiable. Any impairment loss is calculated as the excess of the asset’s carrying value over its estimated fair value. Fair value is estimated based on the discounted cash flows for the asset group over the remaining useful life or based on the expected cash proceeds for the asset less costs of disposal. In the third quarter of 2018 , the Company recognized a $3.0 million non-cash, long-lived asset impairment charge related to a legacy ERP system in the EMEA segment. During the fourth quarter of 2017 , the Company ceased use of one of its internal-use software platforms and recorded $0.4 million of expense within depreciation and amortization. Internal-Use Software In accordance with ASC 350-40, Intangibles—Goodwill and Other, Internal-Use Software, certain costs incurred in the planning and evaluation stage of internal-use computer software are expensed as incurred. Certain costs incurred during the application development stage are capitalized and included in property and equipment. Capitalized internal-use software costs are depreciated over the expected economic useful life of three to six years using the straight-line method. Capitalized internal-use software asset depreciation expense for the years ended December 31, 2018 , 2017 and 2016 was $6.1 million , $5.4 million and $9.2 million , respectively and is included in total depreciation expense. At December 31, 2018 and 2017 , the net book value of internal-use software was $25.4 million and $29.7 million , respectively. Effective October 1, 2016, the Company changed the estimated useful lives of some of its software assets. The estimated useful lives of such assets were increased by an average of approximately 4.5 years. See Note 8. Goodwill Goodwill represents the excess of purchase price and related costs over the value assigned to the net tangible and identifiable intangible assets of businesses acquired. In accordance with ASC 350, Intangibles—Goodwill and Other ("ASC 350") , goodwill is not amortized, but instead is tested for impairment annually or more frequently if circumstances indicate a possible impairment may exist. Absent any interim indicators of impairment, the Company tests for goodwill impairment as of the first day of its fourth fiscal quarter of each year. Under ASC 350, an entity is permitted 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 quantitative goodwill impairment test. If the quantitative test is required, the fair value for each reporting unit is compared to its book value including goodwill. In the case that the fair value is less than the book value of the goodwill, the difference is recognized as an impairment. During the third quarter of 2018 , the Company performed an interim impairment assessment and concluded that the EMEA and LATAM reporting units were impaired. As a result, impairment charges of $20.8 million and $7.1 million were recorded in the EMEA and LATAM reporting units, respectively. See Note 5 for further discussion of the impairment. The Company performed its annual impairment test as of October 1, 2018 , its measurement date, and concluded there was no impairment in any of its reporting units. As of December 31, 2018 , the Company performed an interim impairment assessment and concluded that the North America reporting unit was impaired. As a result, an impairment charge of $18.4 million was recorded. See Note 5 for further discussion of the impairment. Other Intangible Assets In accordance with ASC 350 , Intangibles—Goodwill and Other, the Company amortizes its intangible assets with finite lives over their respective estimated useful lives and reviews for impairment whenever impairment indicators exist. Impairment indicators could include significant under-performance relative to the historical or projected future operating results, significant changes in the manner of use of assets, significant negative industry or economic trends or significant changes in the Company’s market capitalization relative to net book value. Any changes in key assumptions used by the Company, including those set forth above, could result in an impairment charge and such a charge could have a material adverse effect on the Company’s consolidated results of operations. The Company’s intangible assets consist of customer lists, non-competition agreements, trade names and patents. The Company’s customer lists, which have an estimated weighted-average useful life of approximately 14 years, are being amortized using the economic life method. The Company’s non-competition agreements, trade names and patents are being amortized on the straight-line basis over their estimated weighted-average useful lives of approximately 4 years, 13 years and 9 years, respectively. In the third quarter of 2018 , the Company recognized a $13.8 million non-cash, intangible asset impairment charge related to certain customer lists. Of the total charge, $0.6 million related to the LATAM segment and $13.2 million related to the EMEA segment. In the fourth quarter of 2016 , the Company recorded a non-cash, intangible asset impairment charge of $0.1 million related to a trade name acquired in a prior year business combination in the EMEA segment. Shipping and Handling Costs Shipping and handling costs are classified in cost of goods sold in the consolidated statements of operations. Income Taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes , under which deferred tax assets and liabilities are recognized based upon anticipated future tax consequences attributable to differences between financial statement carrying values of assets and liabilities and their respective tax bases. A valuation allowance is established to reduce the carrying value of deferred tax assets if it is considered more likely than not that such assets will not be realized. Any change in the valuation allowance would be charged to income in the period such determination was made. The Company recognizes the tax benefit from an uncertain tax position only if it is “more likely than not” the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50% likelihood of being realized upon settlement. The Company’s policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. There was nominal interest and penalties related to unrecognized tax benefits for the years ended December 31, 2018 , 2017 and 2016 . Based on the Company’s evaluation, it was concluded that there are no significant uncertain tax positions requiring recognition in its financial statements. Examinations by tax authorities have been completed through 2014 in the Czech Republic, United Kingdom, and United States, and through 2015 in France. On December 22, 2017, the U.S. government enacted comprehensive Federal tax legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (the “Act”). The Act makes changes to the corporate tax rate, business-related deductions and taxation of foreign earnings, among others, that will generally be effective for taxable years beginning after December 31, 2017. The Act requires a U.S. shareholder of a foreign corporation to include global intangible low-taxed (“GILTI”) in taxable income. The accounting policy of the Company is to record any tax on GILTI in the provision for income taxes in the year it is incurred. Advertising Costs of advertising, which are expensed as incurred by the Company, were $1.4 million , $1.2 million and $1.4 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and are included in selling, general and administrative expenses in the consolidated statement of operations. Comprehensive Income (Loss) The components of accumulated comprehensive loss included in the Consolidated Balance Sheets at December 31, 2018 and 2017 are as follows (in thousands): Foreign Currency Translation Adjustments Balance at December 31, 2016 $ (20,949 ) Other comprehensive income before reclassifications 1,720 Net current-period other comprehensive income 1,720 Balance at December 31, 2017 (19,229 ) Other comprehensive loss before reclassifications (5,080 ) Net current-period other comprehensive loss (5,080 ) Balance at December 31, 2018 $ (24,309 ) Stock-Based Compensation The Company accounts for stock-based compensation awards in accordance with ASC 718, Compensation-Stock Compensation . Compensation expense is measured by determining the fair value of each award using the Black-Scholes option valuation model for stock options or the closing share price on the grant date for restricted shares and restricted share units. The fair value is then recognized over the requisite service period of the awards, which is generally the vesting period, on a straight-line basis for the entire award. This option valuation model requires assumptions, which impact the assumed fair value, including the expected life of the stock option, the risk-free interest rate, expected volatility of the stock over the expected life and the expected dividend yield. The Company uses historical data to determine these assumptions and if these assumptions change significantly for future grants, share-based compensation expense will fluctuate in future years. Expected term is estimated based on historical experience related to similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The Company believes that historical experience provides the best estimate of future expected life. The risk-free interest rate is based on actual U.S. Treasury zero-coupon rates for bonds commensurate with the expected term. The expected volatility assumption is based on the historical volatility of the Company's common stock over a period commensurate with the expected term. Forfeitures are recorded as they occur. On June 1, 2017, the Compensation Committee approved, pursuant to the 2006 Stock Incentive Plan, awards of performance share units (“PSUs”) for certain executive officers and employees. The PSUs are performance-based awards that will settle in shares of the Company's common stock, in an amount between 0% and 200% of the target award level, based on the cumulative adjusted earnings per share and the return on invested capital achieved by the Company between April 1, 2017 and December 31, 2019. On October 12, 2018, the Compensation Committee approved, pursuant to the 2006 Stock Incentive Plan, awards of PSUs for certain executive officers and employees. These PSUs are performance-based awards that will settle in shares of the Company's common stock in an amount between 0% and 200% of the target award level, based on the cumulative adjusted earnings per share and the return on invested capital achieved by the Company between July 1, 2018 and December 31, 2020. Compensation expense for PSUs is measured by determining the fair value of the award using the closing share price on the grant date and is recognized ratably from the grant date to the vesting date for the number of awards expected to vest. The amount of compensation expense recognized for PSUs is dependent upon a quarterly assessment of the likelihood of achieving the performance conditions and is subject to adjustment based on management's assessment of the Company's performance relative to the target number of shares performance criteria. Stock-based compensation expense is included in selling, general and administrative expenses in the consolidated statement of operations. Recent Accounting Pronouncements Recently Adopted Accounting Standards In the first quarter of 2018, the Company adopted FASB Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606) and all the related amendments (the “new revenue standard”), which outlines a single comprehensive model for entities to use in accounting for revenue using a five-step process that supersedes virtually all existing revenue guidance. The Company adopted the new revenue standard using the modified retrospective transition method. The Company recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings and the effects of the adoption of the new revenue standard on the Company's statement of cash flows are discussed in Note 3. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. In the first quarter of 2018, the Company adopted ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments , which amends ASC 230, Statement of Cash Flows . This ASU provides guidance on the statement of cash flows presentation of certain transactions where diversity in practice exists. The new guidance was applied retrospectively and the impact of this adoption resulted in a $4.4 million and an $0.8 million increase in cash flows from financing activities and a corresponding decrease in cash flows from operating activities in the condensed consolidated statements of cash flows for the twelve months ended December 31, 2017 and December 31, 2016, respectively, due to contingent liability payments made in excess of the original liability recognized at the time of acquisition during that period. In the first quarter of 2018, the Company adopted ASU No. 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory , which amends the timing of recognition of tax consequences of intercompany asset transfers other than inventory when the transfer occurs and removes the exception to postpone recognition until the asset has been sold to an outside party. The new guidance was applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings. The impact of this adoption did not have a material effect on the consolidated financial statements. In the first quarter of 2018, the Company early adopted ASU No. 2017-04, Simplifying the Test for Goodwill Impairment , which simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. The new guidance was applied prospectively, and the impact of this adoption did not have a material effect on the consolidated financial statements. In the first quarter of 2018, the Company adopted ASU No. 2017-09, Scope of Modification Accounting , which amends ASC 718, Compensation - Stock Compensation . This ASU amends the scope of modification accounting for share-based payment arrangements and provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. The new guidance allows companies to make certain changes to awards without accounting for them as modifications. It did not change the accounting for modifications. The new guidance was applied prospectively to awards modified on or after the adoption date. The impact of this adoption did not have a material effect on the consolidated financial statements. In third quarter of 2018, the Company early adopted ASU No. 2018-15, Customer's Accounting for Implementation Costs Incurred In A Cloud Computing Arrangement That Is A Service Contract , which amends the guidance in ASC 350, Intangibles - Goodwill and Other , to align a customer's accounting for implementation costs incurred in a cloud computing arrangement that is a service contract with the guidance on capitalizing costs related to internal-use software. Capitalized costs for internal-use software are included in property and equipment, net in the condensed consolidated financial statements. The new guidance was applied prospectively, and the impact of this adoption did not have a material effect on the consolidated financial statements. In the fourth quarter of 2018, the Company early-adopted ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting , which simplifies the accounting for share-based payments granted to nonemployees for goods and services. Under the ASU, most of the guidance on such payments to nonemployees would be aligned with the requirements for share-based payments granted to employees. This ASU is effective for annual periods beginning after December 15, 2018 and interim periods within those annual periods, and early adoption is permitted. The impact of this adoption did not have a material effect on the consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and requires disclosure of key information about leasing arrangements. ASU 2016-02 requires lessees to recognize a right-of-use asset and a lease liability for most leases in the balance sheet as well as other qualitative and quantitative disclosures. ASU 2016-02 requires using a modified retrospective transition method and provides certain practical expedients. The Company has elected the package of practical expedients to not reassess prior conclusions related to contracts containing leases, lease classification and initial direct costs. The Company elected not to separate non-lease components from lease components and to account for both as a single lease component by class of the underlying asset. In March 2018, the FASB approved a new, optional transition method that will give companies the option to use the effective date as the date of initial application on transition. The Company is electing the transition method, and as a result, the Company will not adjust its comparative period financial information or make the new required lease disclosures for periods before the effective date. The transition method the Company elected for adoption of the standard requires us to make a cumulative effect adjustment as of January 1, 2019. The most significant impact from adopting the standard is the initial recognition of operating lease right-of-use assets and lease liabilities on the Company's balance sheet, while the Company's accounting for finance leases (i.e., capital leases) remains substantially unchanged. The Company continues to finalize its implementation efforts and currently estimate recording, during the first quarter of 2019, approximately $35.2 million to $47.9 million of right of use assets and liabilities on its consolidated balance sheet. The impact of ASU 2016-02 is non-cash in nature, therefore, it will not affect the Company’s cash flows. The Company has also made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet. It will continue to recognize those lease payments in the Consolidated Statement of Operations on a straight-line basis over the lease term. In addition, the Company expects to derecognize $48.4 million from Property and equipment and the $47.4 million corresponding liability (accounted for under the finance method) recognized as of December 31, 2018 related to build-to-suit leases. Refer to Footnote 10 for further details. The transition method the Company elected for adoption of the standard requires us to make a cumulative effect adjustment as of January 1, 2019 and the Company does not believe this amount will be material to the Consolidated Statements of Operations or Cash Flows. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which requires entities to measure the impairment of certain financial instruments, including trade receivables, based on expected losses rather than incurred losses. The effective date is for fiscal years beginning after December 15, 2019, with early adoption permitted for financial statement periods beginning after December 15, 2018. The Company is evaluating the potential effects of the ASU on the consolidated financial statements. In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , which amends ASC 220, Income Statement - Reporting Comprehensive Income . This ASU allows a reclassification from accumulated OCI to retained earnings for stranded tax effects resulting from tax reform. This update is effective for fiscal years beginning after December 15, 2018, including interim periods therein, and early adoption is permitted. The Company does not expect to reclassify these stranded tax effects from U.S. tax reform when the Company adopts the ASU. In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which amends ASC 820, Fair Value Measurement . This ASU modifies the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosures. The effective date is the first quarter of fiscal year 2021, with early adoption permitted for the removed disclosures and delayed adoption until fiscal year 2021 permitted for the new disclosures. The removed and modified disclosures will be adopted on a retrospective basis and the new disclosures will be adopted on a prospective basis. The Company is evaluating the potential effects of the ASU on the consolidated financial statements.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition On January 1, 2018, the Company adopted ASC 606 using the modified retrospective method applied to those contracts that were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported in accordance with the Company's historic accounting under ASC Topic 605 Revenue Recognition . The following summarizes the significant changes in accounting treatment due to the adoption of the new revenue standard: • The Company recorded a net increase to opening retained earnings of $0.5 million as of January 1, 2018 due to the cumulative impact of adopting ASC 606, with the impact primarily related to the Company's capitalization of certain setup costs, inclusive of income tax effects. The details of the significant changes and quantitative impact of the changes for the year ended December 31, 2018 are disclosed below. • The Company previously recognized setup costs related to new customers as selling, general and administrative expense when they were incurred. Under ASC 606, the Company capitalizes certain setup costs as costs to fulfill a contract and amortizes them consistently with the pattern of transfer of the good or service to which the asset relates. • The following tables summarize the impacts of ASC 606 adoption on the Company’s consolidated financial statements as of December 31, 2018 (in thousands, except per share data). As Reported December 31, 2018 Adjustments As Adjusted Without Adoption of ASC 606 Condensed consolidated balance sheet Assets: Other non-current assets $ 2,976 (1,152 ) $ 1,824 Liabilities: Deferred income taxes $ 8,178 (128 ) $ 8,050 Stockholders' equity: Retained earnings $ 48,905 (1,024 ) $ 47,881 As Reported Year Ended December 31, 2018 Adjustments As Adjusted Without Adoption of ASC 606 Condensed consolidated statement of operations Operating expenses: Selling, general and administrative expenses $ 239,124 $ 70 $ 239,194 Intangible and other asset impairments 18,121 (1,274 ) 16,847 (Loss) income from operations (67,485 ) 1,204 (66,281 ) (Loss) income before taxes (76,632 ) 1,204 (75,428 ) (Benefit) provision for income tax (461 ) 306 (155 ) Net (loss) income (76,171 ) 898 (75,273 ) Basic (loss) earnings per share $ (1.46 ) $ 0.02 $ (1.44 ) Diluted (loss) earnings per share $ (1.46 ) $ 0.02 $ (1.44 ) The adoption of ASC 606 had no impact on the Company’s cash flow from operations and only resulted in offsetting changes in classification in operating cash flows. Nature of Goods and Services The Company primarily generates revenues from the procurement of marketing materials for customers. Service revenue including creative, design, installation, warehousing and other services has not been material to the Company’s overall revenue to date. Products and services may be sold separately or in bundled packages. For bundled packages, the Company accounts for individual products and services separately if they are distinct - that is, if a product or service is separately identifiable from other items in the bundled package and if a customer can benefit from it on its own or with other resources that are readily available to the customer. The Company includes any fixed charges per its contracts as part of the total transaction price. The transaction price is allocated between separate products and services in a bundle based on their standalone selling prices. The standalone selling prices are generally determined based on the prices at which the Company separately sells the products and services. Contracts may include variable consideration (for example, customer incentives like rebates), and to the extent that variable consideration is not constrained, the Company include the expected amount within the total transaction price and update its assumptions over the duration of the contract. The constraint will generally not result in a reduction in the estimated transaction price. The Company’s performance obligations related to the procurement of marketing materials are typically satisfied upon shipment or delivery of its products to customers. Payment is typically due from the customer at this time or shortly thereafter. Unbilled revenue represents shipments or deliveries that have been made to customers for which the related account receivable has not yet been invoiced. The Company does not have material future performance obligations that extend beyond one year. Some service revenue may be recognized over time but the difference from recognizing that revenue over time versus at a point in time when the service is completed and accepted by the customer has not been material to the Company’s overall revenue to date. Contract Balances Contract liabilities were $17.6 million and $17.6 million as of December 31, 2018 and January 1, 2018, respectively, and are referred to as deferred revenue in the condensed consolidated financial statements. The Company records deferred revenue when cash payments are received or due in advance of its performance. The increase in the deferred revenue balance for the year ended December 31, 2018 is primarily driven by cash payments received or due in advance of satisfying its performance obligations as well as the recognition of a contract liability for projects where the Company has a right to payment (approximately $11.9 million ), offset by $11.4 million of revenue recognized from the deferred revenue balance from January 1, 2018. There were no contract assets during the period. Transaction Price Allocated to Remaining Performance Obligations ASC 606 requires that the Company disclose the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied as of December 31, 2018. The Company does not have material future performance obligations that extend beyond one year. Accordingly, the Company has applied the optional exemption for contracts that have an original expected duration of one year or less. The nature of the remaining performance obligations as well as the nature of the variability and how it will be resolved is described above. Costs to Obtain a Customer Contract The Company incurs certain incremental costs to obtain a contract that the Company expects to recover. The Company applies a practical expedient and recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the Company otherwise would have recognized is one year or less. No incremental costs to obtain a contract incurred by the Company prior to adoption of ASC 606 or during the year ended December 31, 2018, are required to be capitalized. These costs primarily relate to commissions paid to its account executives and are included in selling, general and administrative expenses. Costs to Fulfill a Customer Contract The Company capitalized certain setup costs related to new customers as fulfillment costs upon adoption of ASU 2014-09 and during the year ended December 31, 2018. The closing balance at December 31, 2018 was $1.2 million . Capitalized contract setup costs are amortized over the expected period of benefit using the straight-line method which is generally three years. In the year ended December 31, 2018, the amount of amortization was $0.4 million , and there was a $1.3 million impairment loss in relation to setup costs capitalized in the North America reportable segment. The impairment was calculated as the difference between the carrying amount of the asset and the recoverable amount.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions	Acquisitions Contingent Consideration In connection with certain of the Company’s acquisitions, contingent consideration is payable in cash or common stock upon the achievement of certain performance measures over future periods. The Company recorded the acquisition date fair value of the contingent consideration liability as additional purchase price. The process for determining the fair value of the contingent consideration liability consists of reviewing financial forecasts and assessing the likelihood of reaching the required performance measures based on factors specific to each acquisition as well as the Company’s historical experience with similar arrangements. Subsequent to the acquisition date, the Company estimates the fair value of the contingent consideration liability each reporting period and any adjustments made to the fair value are recorded in the Company’s results of operations. If an acquisition reaches the required performance measures within the reporting period, the fair value of the contingent consideration liability is increased to 100% , the maximum potential payment and reclassified to Due to seller. On June 30, 2017 , the EYELEVEL acquisition reached the required performance measures at the end of its earnout period and the balance of the fair value of the contingent consideration liability was reclassified to due to seller. During the third quarter of 2017 the company paid $17.7 million to settle the final balance owed to the sellers. As of December 31, 2018 and 2017 , there are and were no outstanding contingent consideration liabilities. During the twelve months ended December 31, 2018 and 2017 and 2016 , the Company recorded expense of $0.0 million , $0.7 million and $10.4 million , respectively, due to changes in the fair value of the contingent consideration liability. Shares Issued as Consideration for Acquisitions Purchase agreements entered by the Company for business combinations often state that the purchase price, including contingent consideration, is to be paid in shares of the Company’s common stock. The value of the shares for each issuance is determined either by the closing price of the Company’s common stock on dates specified in each separate agreement or an average of the closing price of the Company's common stock during and average period prior to the distribution. Generally, the date that determines the share value is the date of the purchase agreement, the last date in a contingent consideration measurement period or the date of issuance to the sellers. The following table presents the number of shares issued as consideration for acquisitions and contingent consideration and the corresponding value of those shares during the years ended December 31, 2018 , 2017 and 2016 (in thousands, except share value amounts): Shares of Common Stock Issued Value of Shares Average Share Value Year ended December 31, 2018: Payments of contingent consideration — — — Year ended December 31, 2017: Payments of contingent consideration 441 $ 4,678 $ 10.61 Year ended December 31, 2016: Payments of contingent consideration 244 $ 2,012 $ 8.25
Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]	Acquisitions Contingent Consideration In connection with certain of the Company’s acquisitions, contingent consideration is payable in cash or common stock upon the achievement of certain performance measures over future periods. The Company recorded the acquisition date fair value of the contingent consideration liability as additional purchase price. The process for determining the fair value of the contingent consideration liability consists of reviewing financial forecasts and assessing the likelihood of reaching the required performance measures based on factors specific to each acquisition as well as the Company’s historical experience with similar arrangements. Subsequent to the acquisition date, the Company estimates the fair value of the contingent consideration liability each reporting period and any adjustments made to the fair value are recorded in the Company’s results of operations. If an acquisition reaches the required performance measures within the reporting period, the fair value of the contingent consideration liability is increased to 100% , the maximum potential payment and reclassified to Due to seller. On June 30, 2017 , the EYELEVEL acquisition reached the required performance measures at the end of its earnout period and the balance of the fair value of the contingent consideration liability was reclassified to due to seller. During the third quarter of 2017 the company paid $17.7 million to settle the final balance owed to the sellers. As of December 31, 2018 and 2017 , there are and were no outstanding contingent consideration liabilities. During the twelve months ended December 31, 2018 and 2017 and 2016 , the Company recorded expense of $0.0 million , $0.7 million and $10.4 million , respectively, due to changes in the fair value of the contingent consideration liability.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The following is a summary of the goodwill balance for each reportable segment as of December 31 (in thousands): North America EMEA LATAM Total Balance as of December 31, 2016 $ 170,757 $ 23,264 $ 8,680 $ 202,700 Foreign exchange impact (72 ) (1,449 ) (1,233 ) (2,754 ) Balance as of December 31, 2017 170,685 21,815 7,447 199,946 Goodwill impairment (18,432 ) (20,778 ) (7,109 ) (46,319 ) Foreign exchange impact (95 ) (1,037 ) (338 ) (1,469 ) Balance as of December 31, 2018 $ 152,158 $ — $ — $ 152,158 Goodwill represents the excess of purchase price and related costs over the value assigned to the net tangible and identifiable intangible assets of businesses acquired. In accordance with ASC 350, Intangibles – Goodwill and Other , goodwill is not amortized, but instead is tested for impairment annually, or more frequently if circumstances indicate a possible impairment may exist. Absent any interim indicators of impairment, the Company tests for goodwill impairment as of the first day of the fourth fiscal quarter of each year. The fair value estimates used in the goodwill impairment analysis required significant judgment. The Company's fair value estimates for the purposes of determining the goodwill impairment charge are considered Level 3 fair value measurements. The fair value estimates were based on assumptions management believes to be reasonable, but that are inherently uncertain, including estimates of future revenues and operating margins and assumptions about the overall economic climate and the competitive environment for the business. During the quarter ended September 30, 2018 , the Company changed its segments (see Note 19) and re-evaluated its reporting units. This change required an interim impairment assessment of goodwill. The Company determined the enterprise value for its North America reporting unit based on a discounted cash flow model. The Company determined the enterprise value for its EMEA and LATAM reporting units based on the adjusted book value method. The Company further compared the enterprise value of each reporting unit to their respective carrying value. The enterprise value for North America exceeded its carrying value, which indicated that there was no impairment, whereas enterprise values for the EMEA and LATAM reporting units were less than their respective carrying values and resulted in $20.8 million and $7.1 million goodwill impairment charges, respectively. In total, the Company recognized a $27.9 million in non-cash, goodwill impairment charges during the third quarter of 2018 , which is included in operating expenses in the condensed consolidated statement of operations. No tax benefit was recognized on such charge, and this charge had no impact on the Company’s cash flows or compliance with debt covenants. The Company performed its annual impairment test as of October 1, 2018 , its measurement date, and concluded there was no impairment in any of its reporting units. As of December 31, 2018 , the Company performed an interim impairment assessment due to a triggering event caused by a sustained decrease in the Company's stock price. The Company determined an enterprise value for its North America reporting unit that considered both the discounted cash flow and guideline public company methods. The Company further compared the enterprise value of the reporting unit to its respective carrying value. The enterprise value for the North America reporting unit was less than its carrying value and resulted in a $18.4 million non-cash goodwill impairment charge. No tax benefit was recognized on such charge, and this charge had no impact on the Company's cash flows or compliance with debt covenants. The Company previously recorded gross and accumulated impairment losses of $75.4 million in the EMEA reportable segment resulting from prior period goodwill impairment tests.

Other Intangible Assets

Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Other Intangible Assets	Other Intangible Assets The following is a summary of the Company’s other intangible assets as of December 31 (in thousands): 2018 2017 Weighted Average Life Customer lists $ 73,792 $ 74,615 14.4 Non-competition agreements 950 964 4.1 Trade names 2,510 2,510 13.3 Patents 57 57 9.0 77,309 78,146 Less accumulated amortization and impairment (67,481 ) (50,583 ) Intangible assets, net $ 9,828 $ 27,563 In accordance with ASC 350, Intangibles – Goodwill and Other, the Company amortizes its intangible assets with finite lives over their respective estimated useful lives and reviews for impairment whenever impairment indicators exist. Impairment indicators could include significant under-performance relative to the historical or projected future operating results, significant changes in the manner of use of assets, significant negative industry or economic trends or significant changes in the Company’s market capitalization relative to net book value. Any changes in key assumptions used by the Company, including those set forth above, could result in an impairment charge and such a charge could have a material adverse effect on the Company’s consolidated results of operations. The Company’s intangible assets consist of customer lists, non-competition agreements, trade names and patents. The Company’s customer lists, which have an estimated weighted-average useful life of approximately fourteen years , are being amortized using the economic life method. The Company’s non-competition agreements, trade names, and patents are being amortized on a straight-line basis over their estimated weighted-average useful lives of approximately four years , thirteen years , and nine years , respectively. Amortization expense related to these intangible assets was $3.6 million , $5.0 million , and $5.5 million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. The Company's customer lists had accumulated amortization and impairment of $64.5 million and $47.8 million as of December 31, 2018 and 2017 , respectively. The Company's trade names had accumulated amortization and impairment of $2.0 million and $1.8 million as of December 31, 2018 and 2017 , respectively. The Company's patents and non-competition agreements were fully amortized as of December 31, 2018 and 2017 . The estimated amortization expense for the next five years and thereafter, is as follows (in thousands): 2019 $ 2,122 2020 2,021 2021 1,783 2022 1,407 2023 961 Thereafter 1,534 $ 9,828 2018 Intangible Assets Impairment In the third quarter of 2018 , the Company changed its reporting units as part of a segment change, which required an interim impairment assessment. The Company's intangible and long-lived assets associated with the reporting units assessed were also reviewed for impairment. It was determined that the fair value of intangible assets in EMEA and LATAM was less than the recorded book value of certain customer lists. As a result, the Company recognized a $13.8 million non-cash, intangible asset impairment charge related to certain customer lists, which is included in the accumulated amortization balance above. Of the total charge, $0.6 million related to the LATAM reportable segment, and $13.2 million related to the EMEA reportable segment. 2016 Intangible Assets Impairment During the fourth quarter of 2016 , the Company recorded a non-cash, intangible asset impairment charge of $0.1 million related to a trade name acquired in a prior year business combination in the EMEA reportable segment. The charge is included in the depreciation and amortization line item of the income statement.

Restructuring Activities and Ot

Restructuring Activities and Other Charges	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring Activities and Other Charges	Restructuring Activities and Charges 2018 Restructuring Plan On August 10, 2018 , the Company approved a plan to reduce the Company's cost structure while driving returns for its clients and shareholders. The plan was adopted as a result of the Company's determination that its selling, general and administrative costs were disproportionately high in relation to its revenue and gross profit. In connection with these actions, the Company expects to incur pre-tax cash restructuring charges of $20.0 million to $25.0 million and pre-tax non-cash restructuring charges of $0.4 million . Cash charges are expected to include $12.0 million to $15.0 million for employee severance and related benefits and $8.0 million and $10.0 million for lease and contract terminations and other associated costs. Where required by law, the Company will consult with each of the affected countries’ local Works Councils prior to implementing the plan. The plan was expected to be completed by the end of 2019 . On February 21, 2019, the Board of Directors approved a two-year extension to the restructuring plan through the end of 2021. For the year ended December 31, 2018 , the Company recognized $6.0 million in restructuring charges. The following table summarizes the restructuring activities for the 2018 Restructuring Plan for the year ended December 31, 2018 (in thousands): Employee Severance and Related Benefits Lease and Contract Termination Costs Other Total Balance at December 31, 2017 $ — $ — $ — $ — Charges 3,257 512 2,262 6,031 Cash Payments (2,594 ) (226 ) (1,557 ) (4,377 ) Non-cash settlements/adjustments (305 ) — — (305 ) Balance at December 31, 2018 $ 358 $ 286 $ 705 $ 1,349 During the year ended December 31, 2018 , the Company recorded the following restructuring costs within loss from operations (in thousands): North America EMEA LATAM Other Total For the Year Ended December 31, 2018 Restructuring charges $ 882 $ 2,496 $ 368 $ 2,285 $ 6,031 2015 Restructuring Plan On December 14, 2015, the Company approved a global realignment plan that allowed the Company to more efficiently meet client needs across its international platform. Through improved integration of global resources, the plan created back office and other efficiencies and allowed for the elimination of approximately 100 positions deemed unnecessary. In connection with these actions, the Company incurred total pre-tax cash restructuring charges of $6.7 million , the majority of which were recognized during 2016. These cash charges included approximately $5.6 million for employee severance and related benefits and $1.1 million for lease and contract termination and other associated costs. The charges were all incurred by the end of 2016 with the final payouts of the charges expected to occur in 2019. As required by law, the Company consulted with each of the affected countries’ local Works Councils throughout the plan. The following table summarizes the accrued restructuring activities for this plan for the twelve months ended December 31, 2018 (in thousands), all of which relate to EMEA: Employee Severance and Related Benefits Lease and Contract Termination Costs Other Total Balance at December 31, 2017 $ 484 $ — $ — $ 484 Cash payments (47 ) — — (47 ) Non-cash settlements / adjustments 49 — — 49 Balance at December 31, 2018 $ 486 $ — $ — $ 486

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and equipment at December 31, 2018 and 2017 , respectively, consisted of the following (in thousands): 2018 2017 Computer equipment $ 12,258 $ 10,985 Software, including internal-use software 82,426 78,410 Office equipment and furniture 7,315 6,111 Buildings 49,169 — Leasehold improvements 4,394 3,576 Total Property and Equipment, Gross 155,562 99,082 Less accumulated depreciation (72,629 ) (62,368 ) Property and Equipment, Net $ 82,933 $ 36,714 Depreciation expense was $9.4 million , $8.4 million , and $12.4 million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. In accordance with the Company’s fixed asset policy, the Company reviews the estimated useful lives of all its fixed assets, including software assets, at least once a year or when there are indicators that a useful life has changed. The review during the fourth quarter of 2016 indicated that the estimated useful lives of certain proprietary software were longer than the previously estimated useful lives. As a result, effective October 1, 2016 , the Company changed the estimated useful lives of a portion of its software assets. The estimated useful lives of such assets were increased by an average of approximately 4.5 years. These assets had a net book value of $20.8 million as of October 1, 2016 . The effect of this change in estimate resulted in a reduction of depreciation expense by $1.4 million , increase in net income by $0.8 million and increase in basic and diluted earnings per share by $0.02 for the year ended December 31, 2016 . Long-Lived Asset Impairment The Company evaluates its long-lived assets, including property and equipment, for impairment whenever events or changes in circumstances indicate that the carrying value of these assets may not be recoverable. Recoverability of these assets is measured by comparison of the carrying amount of each asset to the future undiscounted cash flows the asset is expected to generate over its remaining life. If the asset is considered to be impaired, the amount of any impairment is measured as the difference between the carrying value and the fair value of the impaired asset. In the third quarter of 2018 , the Company changed its reporting units as part of a segment change, which required an interim impairment assessment. The intangible and long-lived assets associated with the reporting units assessed were also reviewed for impairment. It was determined that the fair value of capitalized costs related to a legacy ERP system in the EMEA reporting unit was less than the recorded book value of such assets. During the third quarter of 2018 , the Company recorded a $3.0 million non-cash, long-lived asset impairment charge related to a legacy ERP system in the EMEA reportable segment. During the fourth quarter of 2017 , the Company ceased use of one of its internal-use software platforms and recorded $0.4 million of expense within depreciation and amortization. Buildings T he Company was previously deemed the accounting owner of facilities in Blue Ash, Ohio, Portland, Oregon, and Prague, Czech Republic, during construction. Upon completion of construction, the Company evaluated each property for sale‑leaseback accounting treatment under ASC 840, Leases . The Company determined that the Portland, Oregon and Prague, Czech Republic locations did not qualify for sale-leaseback accounting treatment. The buildings were reclassified to buildings within Property and equipment, net. Refer to Note 10 for further details.

Revolving Credit Facility

Revolving Credit Facility	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Revolving Credit Facility	Revolving Credit Facility and Going Concern The Company entered into a Credit Agreement, dated as of August 2, 2010 , subsequently amended most recently as of March 15, 2019 , among the Company, the lenders party thereto and Bank of America, N.A., as Administrative Agent (the “Credit Agreement”). The Credit Agreement includes a revolving commitment amount of $175 million and $160 million in the aggregate through September 25, 2019 and September 25, 2020 , respectively. The Credit Agreement also provides the Company the right to increase the aggregate commitment amount by an additional $50 million . Outstanding borrowings under the revolving credit facility are guaranteed by the Company’s material domestic subsidiaries, as defined in the Credit Agreement. The Company’s obligations under the Credit Agreement and such domestic subsidiaries’ guaranty obligations are secured by substantially all of their respective assets. The ranges of applicable rates charged for interest on outstanding loans and letters of credit are 50 - 225 basis point spread for loans based on the base rate and 150 - 325 basis point spread for letter of credit fees and loans based on the Eurodollar rate. The most recent amendment (i) modifies the definition of the term "Consolidated EBITDA" as used in the covenant calculations, (ii) increases the maximum leverage ratio to which the Company is subject for the trailing twelve month periods ended December 31, 2018 and ending March 31, 2019 , respectively, and (iii) decreases the minimum interest coverage ratio to which the Company is subject for the trailing twelve month periods ended December 31, 2018 and ending March 31, 2019 , respectively. The Company is also currently in the process of refinancing its debt. Please see Note 20 for further on events and circumstances occurring subsequent the balance sheet date. The previous amendment to the Credit Agreement, dated as of September 28, 2018 , extended the maturity date from September 25, 2019 to September 25, 2020 and adjusted the applicable rate spreads charged for interest on outstanding loans and letters of credit. Additional modifications were subsequently superseded by the most recent amendment, dated as of March 15, 2019 . The terms of the Credit Agreement include various covenants, including covenants that require the Company to maintain a maximum leverage ratio and a minimum interest coverage ratio. The most recent amendment to the Credit Agreement modified the maximum leverage ratio from 3.50 to 1.00 to 4.50 to 1.00 for the trailing twelve months ended December 31, 2018 , and from 3.00 to 1.00 to 4.75 to 1.00 for the trailing twelve months ended March 31, 2019 . The maximum leverage ratio is 3.00 to 1.00 for the trailing twelve months ending June 30, 2019 and each period thereafter. The most recent amendment to the Credit Agreement also modified the minimum interest coverage ratio from 5.00 to 1.00 to 4.00 to 1.00 for the trailing twelve months ended December 31, 2018 , and from 5.00 to 1.00 to 3.50 to 1.00 for the trailing twelve months ending March 31, 2019 . The minimum interest coverage ratio is 5.00 to 1.00 for the trailing twelve months ending June 30, 2019 and each period thereafter. At December 31, 2018 , the Company's leverage ratio exceeded its 3.50 to 1.00 ratio and the Company's interest coverage ratio did not meet its minimum 5.00 to 1.00 ratio. As a result, the Company amended its Credit Facility on March 15, 2019 to amend its financial covenant ratios. The revised covenants only extend to the Q4 2018 and Q1 2019 periods, and therefore, without any additional changes, the Company would likely exceed the maximum leverage ratio covenant and/or not meet the minimum interest coverage ratio beyond the waiver periods, in which case the lenders would have the ability to demand repayment of the outstanding debt at such time. Accordingly, the outstanding balance of $142.7 million is presented as a current liability as of December 31, 2018 based on the guidance in ASC 470, Debt . Additionally, under ASC 205, Presentation of Financial Statements , the Company is required to consider and has evaluated whether there is substantial doubt that it has the ability to meet its obligations within one year from the financial statement issuance date. This assessment also includes the Company’s consideration of any management plans to alleviate such doubts. As described above, the probable inability of the Company to meet its current covenant obligations beyond the covenant waiver periods casts substantial doubt on the Company’s ability to meet its obligations within one year from the financial statement issuance date. The Company is in the process of negotiating changes to its debt structure with its existing lenders, which, based on discussions with lenders to-date and review of proposed negotiated conditions and financial covenants, the Company believes will be successfully completed in Q2 2019. At December 31, 2018 , the Company had $6.0 million of unused availability under the Credit Agreement and $0.7 million of letters of credit which have not been drawn upon. The outstanding revolving credit facility - noncurrent was $0.0 million and $128.4 million as of December 31, 2018 and 2017 , respectively, and the revolving credit facility - current was $142.7 million and $0.0 million as of December 31, 2018 and 2017 , respectively. The Company had unamortized deferred financing fees associated with the Credit Facility of $0.7 million and $0.4 million as of December 31, 2018 and 2017 . On February 22, 2016 , the Company entered into a Revolving Credit Facility (the “Facility”) with Bank of America N.A. to support ongoing working capital needs of the Company's operations in China. The Facility includes a revolving commitment amount of $5.0 million whereby maturity dates vary based on each individual drawdown. Outstanding borrowings under the Facility are guaranteed by the Company’s assets. Borrowings and repayments are made in renminbi, the official Chinese currency. The applicable interest rate is 110% of the People’s Bank of China’s base rate. The terms of the Facility include limitations on use of funds for working capital purposes as well as customary representations and warranties made by the Company. At December 31, 2018 , the Company had $4.5 million of unused availability under the Facility.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Financing Obligation - Build to Suit Leases During the third quarter of 2018, construction for the Portland, Oregon warehouse and office facilities for the Company's North America operations was completed. During the fourth quarter of 2018, construction for the Prague, Czech Republic warehouse and office facilities for the Company's EMEA operations was completed. T he Company was previously deemed the accounting owner of these facilities during construction, and now that the construction is complete, the Company evaluated each property for sale‑leaseback accounting treatment under ASC 840, Leases . The Company determined that the Portland, Oregon location did not qualify for sale-leaseback accounting treatment. The building was reclassified to buildings within Property and equipment, net. All future rent payments on the Portland lease will be treated as debt service payments on the financing obligation. As of December 31, 2018, $8.8 million was included in Property and equipment, net for the Portland facility. A corresponding liability (under the finance method) of $8.9 million was included in Financing obligation - build-to-suit leases as of December 31, 2018. The Company recorded $0.5 million of expense related to the Portland location during the year ended December 31, 2018, of which $0.1 million was included selling, general and administrative expenses, $0.3 million was interest expense and $0.1 million was depreciation and amortization in the Consolidated Statement of Operations. The Company determined that the Prague, Czech Republic location did not qualify for sale-leaseback accounting treatment. The building was reclassified to buildings within Property and equipment, net. All future rent payments on the Prague lease will be treated as debt service payments on the financing obligation. As of December 31, 2018, $39.6 million was included in Property and equipment, net for the Portland facility. A corresponding liability (under the finance method) of $38.5 million was included in Financing obligation - build-to-suit leases as of December 31, 2018. The Company recorded $0.7 million of expense related to the Prague location during year ended December 31, 2018, of which $0.5 million was included selling, general and administrative expenses, $0.1 million was interest expense and $0.1 million was depreciation and amortization in the Consolidated Statement of Operations. Lease Commitments The Company leases many of its office facilities for various terms under long-term, noncancelable operating lease agreements. The leases expire at various dates from fiscal year 2019 through fiscal year 2028. Future minimum lease payments are presented below (in thousands): Operating Leases 2019 $ 6,383 2020 5,017 2021 4,422 2022 3,245 2023 2,068 Thereafter 1,966 Total minimum lease payments $ 23,101 The Company recognizes rental expense on a straight-line basis over the term of the lease. The total rent expense for the years ended December 31, 2018 , 2017 and 2016 was $10.5 million , $9.9 million and $10.6 million , respectively and is included in selling, general and administrative expenses in the consolidated statement of operations. As described above, the Company determined that the Portland, Oregon and Prague, Czech Republic locations did not qualify for sale-leaseback accounting treatment. All future rent payments are will be treated as debt service payments on the financing obligation under the finance method. Total minimum lease payments for the five succeeding years and thereafter are $2.4 million $3.9 million $4.1 million $4.3 million , and $3.8 million . Secured Borrowing Arrangements Certain international subsidiaries are party to short-term secured borrowing arrangements which allow the Company to borrow against the value of a pool of current accounts receivable. The Company retains possession of the accounts receivable which are pledged as collateral. The pledged amounts are immaterial to the consolidated accounts receivable balance. Legal Contingencies In October 2013, the Company removed the former owner of Productions Graphics from his role as President of Productions Graphics, the Company’s French subsidiary. He had been in that role since the Company’s 2011 acquisition of Productions Graphics, a European business then principally owned by him. In December 2013, the former owner of Productions Graphics initiated a wrongful termination claim in the Commercial Court of Paris seeking approximately €0.7 million (approximately $1.0 million ) in fees and damages, and this claim is currently pending. In anticipation of this claim, in November 2013, he also obtained a judicial asset attachment order in the amount of €0.7 million (approximately $1.0 million ) as payment security; the attachment order was confirmed in January 2014 and the Company filed an appeal of the order. In March 2015, the appellate court ruled in the Company’s favor in the attachment proceedings, releasing all attachments. The Company disputes the allegations of the former owner of Productions Graphics and intends to vigorously defend these matters. In February 2014, based on a review the Company initiated into certain transactions associated with the former owner of Productions Graphics, the Company concluded that he had engaged in fraud by inflating the results of the Productions Graphics business in order to induce the Company to pay him €7.1 million in contingent consideration pursuant to the acquisition agreement. In light of those findings, in February 2014 the Company filed a criminal complaint in France seeking to redress the harm caused by his conduct and this proceeding is currently pending. In addition, in September 2015 the Company initiated a civil claim in the Paris Commercial Court against the former owner of Productions Graphics, seeking civil damages to redress these same harms. All of the pending civil matters have been stayed in deference to the Company's related criminal complaint. In addition to these pending matters, there may be other potential disputes between the Company and the former owner of Productions Graphics relating to the acquisition agreement. The Company had paid €5.8 million (approximately $8.0 million ) in fixed consideration and €7.1 million (approximately $9.4 million ) in contingent consideration to the former owner of Productions Graphics; the remaining maximum contingent consideration under the acquisition agreemen t was €34.5 million (approximately $37.6 million ) and the Company has determined that none of this amount was earned and payable. In January 2014, a former finance employee of Productions Graphics initiated wrongful termination and overtime claims in the Labor Court of Boulogne-Billancourt and he currently seeks damages of approximately €0.6 million (approximately $0.7 million ). The Company disputes these allegations and intends to vigorously defend these matters. In addition, the Company’s criminal complaint in France, described above, seeks to redress harm caused by this former employee in light of his participation in the fraudulent transactions described above. The labor claim has been stayed in deference to the Company’s related criminal complaint. In May 2018, shortly following the Company’s announcement of its intention to restate certain historical financial statements, a putative securities class action complaint was filed against the Company and certain of its current and former officers and directors. The action, Errol Brown, et al., v. InnerWorkings, Inc., et al., is currently pending before the United States District Court for the Central District of California. The complaint alleges claims pursuant to Sections 10(b) and 20(a) of the Securities Exchange Act of 1934. Allegations in the complaint include that the Company and its current and former officers and directors made untrue statements or omissions of material fact by issuing inaccurate financial statements for the fiscal years ending December 31, 2015, 2016, and 2017, as well as all interim periods. The putative class seeks an unspecified amount of monetary damages as well as reimbursement of fees and costs, including reasonable attorneys’ fees, and other costs. The Company and individual defendants dispute the claims. On July 27, 2018, the Court appointed a lead plaintiff and lead counsel for the case. Plaintiff’s counsel filed an amended complaint on September 25, 2018. The Company filed a motion to dismiss the complaint on November 26, 2018, and a decision on the motion is pending.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes ("ASC 740"), under which deferred tax assets and liabilities are recognized based upon anticipated future tax consequences attributable to differences between financial statement carrying values of assets and liabilities and their respective tax bases. The (benefit) provision for income taxes consisted of the following components for the years ended December 31, 2018 , 2017 and 2016 (in thousands): Year Ended December 31, 2018 2017 2016 Current income tax expense (benefit): Federal (781 ) 3,076 477 State 180 62 159 Foreign 4,581 4,078 5,972 Total current income tax expense 3,980 7,216 6,608 Deferred income tax expense (benefit): Federal (3,250 ) 1,959 4,165 State (62 ) 1,575 414 Foreign (1,129 ) 538 (353 ) Total deferred income tax expense (4,441 ) 4,072 4,226 (Benefit) provision for income taxes $ (461 ) $ 11,288 $ 10,834 The (benefit) provision for income taxes for the years ended December 31, 2018 , 2017 and 2016 differs from the amount computed by applying the U.S. federal income tax rate of 21% to pretax income (loss) because of the effect of the following items (in thousands): Year Ended December 31, 2018 2017 2016 Tax (benefit) provision at U.S. federal income tax rate $ (16,093 ) $ 9,706 $ 5,175 State income taxes, net of federal income tax effect (307 ) 883 447 Federal, state and international deferred tax rate change 1,135 (5,119 ) — Transition tax (924 ) 5,323 — Effect of non-US operations (2,424 ) (2,228 ) (781 ) Nontaxable contingent liability fair value changes and goodwill impairment 11,254 237 3,578 Research and development credit (40 ) (38 ) (140 ) Change in valuation allowances 3,973 2,103 2,206 Prior year provision to return adjustment 942 (581 ) (137 ) Write-off of deferred taxes and tax receivables 431 70 193 Nondeductible expense and other 468 932 293 Tax reform global intangible low-taxed income 1,124 — — (Benefit) provision for income taxes $ (461 ) $ 11,288 $ 10,834 Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of the Company's tax assets and liabilities for financial reporting purposes and the amounts used for income tax return reporting purposes. At December 31, 2018 and 2017 , the Company’s deferred tax assets and liabilities consisted of the following (in thousands): December 31, 2018 2017 Deferred tax assets: Inventory reserve $ 992 $ 700 Other reserves and allowances 3,470 370 Income tax basis in excess of financial statement basis in intangible assets 1,085 1,669 Deductible stock-based compensation 3,257 3,687 Net operating loss carryforward 18,836 13,669 Tax credit carryforwards 500 428 28,140 20,523 Valuation allowance (13,946 ) (10,711 ) Total deferred tax assets 14,194 9,812 Deferred tax liabilities: Prepaid & other expenses (284 ) (265 ) Fixed assets (4,826 ) (4,946 ) Intangible assets (16,067 ) (15,953 ) Total deferred tax liabilities (21,177 ) (21,164 ) Net deferred tax liability $ (6,983 ) $ (11,352 ) The realizability of deferred income tax assets is based on a more likely than not threshold. If it is determined that it is more likely than not that deferred income tax assets will not be realized, a valuation allowance must be established against the deferred income tax assets. Realization of deferred tax assets is dependent primarily on the generation of future taxable income. In considering the need for a valuation allowance the Company considers historical taxable income along with other positive and negative evidence in assessing the realizability of its deferred tax assets. The Company’s accounting policy is to consider deferred tax liabilities related to indefinite-lived intangible assets as a source of future taxable income when assessing the realizability of its indefinite-lived deferred tax assets. For the years ended December 31, 2018 and 2017 , the Company recorded additional valuation allowances of $3.2 million and $2.4 million , respectively, related to operating losses for certain foreign locations. As of December 31, 2018 , the Company has gross federal and state net operating loss (“NOLs”) carryforwards of $16.3 million and $1.3 million , respectively. Of the $16.3 million federal NOL carryforwards, $15.7 million was generated in 2018 with an indefinite carryover to offset eighty percent of taxable income in a future period based on new legislation. The Internal Revenue Code imposes an annual limitation on the utilization of net operating loss carryforwards related to acquired corporations based on a statutory rate of return (usually the “applicable federal funds rate” as defined in the Internal Revenue Code) and the value of the corporation at the time of a “change in ownership” as defined by Section 382. The Company’s total federal NOL as of December 31, 2018 includes $0.6 million of NOLs from acquired corporations. These acquired NOLs have an annual limitation under Section 382 of the Internal Revenue Code of $0.2 million and begin to expire in 2023. Of the $1.3 million state NOL carryforwards, $1.0 million was generated in 2018. These state NOL carryforwards begin to expire in 2022. As of December 31, 2018 , the Company had tax effected NOLs in Argentina, Chile, China, Czech Republic, France, Germany, Italy, Japan, and Mexico of $0.3 million , $1.0 million , $0.5 million , $1.0 million , $7.9 million , $0.9 million , $0.4 million , $0.4 million , and $0.3 million , respectively, which have an indefinite carryover period. A reserve for an uncertain tax position was recorded during prior years as a result of certain intercompany charges and expenses and as a result of a sale of intellectual property between the Company's subsidiaries. The following table summarizes the Company's uncertain tax positions (in thousands): Uncertain tax positions Balance at December 31, 2017 $ 499 Additions (subtractions) based on tax positions related to the current year — Additions (subtractions) based on tax positions related to the prior year — Interest and penalties 23 Balance at December 31, 2018 $ 522 As of December 31, 2017 and 2016, the Company had recorded uncertain tax positions of $0.5 million and $0.5 million , respectively, of which a nominal amount related to interest and penalties. The Company anticipates $0.2 million of its uncertain tax positions to reverse within the next twelve months. The gross unrecognized tax benefits, if recognized, would impact the effective tax rate by less than 1% as of December 31, 2018 . The Company's intention is to indefinitely reinvest all undistributed earnings of its foreign subsidiaries in accordance with ASC 740. Deferred income taxes were not calculated on undistributed earnings (deficit) of foreign subsidiaries. The Company's (loss) income before taxes for its foreign operations was $(31.6) million , $14.4 million and $13.1 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. On December 22, 2017, the U.S. government enacted comprehensive Federal tax legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (the “Act”). Certain impacts of the new legislation would have generally required accounting to be completed and incorporate into the Company's 2017 year-end financial statements, however in response to the complexities of this new legislation, the SEC issued guidance to provide companies with relief. The SEC provided up to a one-year window for companies to finalize the accounting for the impacts of this new legislation. The Company finalized its accounting for the new provisions during the fourth quarter of 2018. The 2018 impact from finalizing the accounting for the new provisions was a net tax benefit of $0.9 million . The Company operates under a grant of income tax exemption in Puerto Rico, that became effective for certain operations occurring during the period ending December 31, 2018 and should remain in effect for 20 years as long as specific requirements are satisfied. The impact of this income tax exemption grant decreased foreign taxes by $2.0 million for 2018. The benefit of the tax exemption on diluted earnings per share was $0.04 per share.

Fair Value Measurement

Fair Value Measurement	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement ASC 820, Fair Value Measurement includes a fair value hierarchy that is intended to increase consistency and comparability in fair value measurements and related disclosures. The fair value hierarchy is based on observable or unobservable inputs to valuation techniques that are used to measure fair value. Observable inputs reflect assumptions market participants would use in pricing an asset or liability based on market data obtained from independent sources while unobservable inputs reflect a reporting entity’s pricing based upon its own market assumptions. The fair value hierarchy consists of the following three levels: • Level 1: Inputs are quoted prices in active markets for identical assets or liabilities. • Level 2: Inputs are quoted prices for similar assets or liabilities in an active market, quoted prices for identical or similar assets or liabilities in markets that are not active and inputs other than quoted prices that are observable and market-corroborated inputs, which are derived principally from or corroborated by observable market data. • Level 3: Inputs that are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable. The book value of the debt under the Credit Agreement, dated as of August 2, 2010 , subsequently amended most recently as of March 15, 2019 and further discussed in Note 9, is considered to approximate its fair value as of December 31, 2018 as the interest rates are considered in line with current market rates. This valuation method utilizes Level 1 inputs.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	(Loss) Earnings Per Share Basic (loss) earnings per common share is calculated by dividing net (loss) income by the weighted average number of common shares outstanding for the period. Diluted (loss) earnings per share is calculated by dividing net (loss) income by the weighted average shares outstanding ass uming dilution. Dilutive common shares outstanding is computed using the Treasury Stock Method and reflects the additional shares that would be outstanding if dilutive stock options were exercised and restricted stock and restricted stock units were settled for common shares during the period. In addition, dilutive shares would include any shares issuable related to PSUs for which the performance conditions have been met as of the end of the period. For the years ended December 31, 2017 and 2016 , respectively, 1.1 million and 3.8 million options and restricted common shares were excluded from the calculation as these options and restricted common shares were anti-dilutive. There was no anti-dilutive impact for the year ended December 31, 2018 . The computation of basic and diluted (loss) earnings per common share for the years ended December 31, 2018 , 2017 and 2016 , is as follows (in thousands, except per share amounts): Year Ended December 31, 2018 2017 2016 Numerator: Net (loss) income $ (76,171 ) $ 16,430 $ 3,949 Denominator: Denominator for basic (loss) earnings per share—weighted-average shares outstanding 52,230 53,851 53,607 Effect of dilutive securities: Employee stock options and restricted common shares — 1,093 728 Contingently issuable shares — — 125 Denominator for diluted (loss) earnings per share 52,230 54,944 54,460 Basic (loss) earnings per share $ (1.46 ) $ 0.31 $ 0.07 Diluted (loss) earnings per share $ (1.46 ) $ 0.30 $ 0.07

Share Repurchase Program

Share Repurchase Program	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Share Repurchase Program	Share Repurchase Program On February 12, 2015, the Company announced that its Board of Directors approved a share repurchase program authorizing the repurchase of up to an aggregate of $20 million of the Company's common stock through open market and privately negotiated transactions over a two -year period. On November 2, 2016, the Board of Directors approved a two-year extension to the share repurchase program through February 28, 2019. On May 4, 2017, the Board of Directors authorized the repurchase of up to an additional $30.0 million of the Company's common stock through open market and privately negotiated transactions over a tw o-year period ending May 31, 2019. The timing and amount of any share repurchases will be determined based on market conditions, share price, and other factors and the program may be discontinued or suspended at any time. Repurchases will be made in compliance with SEC rules and other legal requirements. During the year ended December 31, 2018 , the Company repurchased 2,667,732 shares of its common stock for an aggregate amount of $25.6 million at an average cost of $9.60 per share. During the year ended December 31, 2017 , the Company repurchased 1,121,928 shares of its common stock for an aggregate amount of $11.0 million at an average cost of $9.78 per share. Shares repurchased under this program are recorded at acquisition cost, including related expenses.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation Plans	Stock-Based Compensation Plans In 2006, the Company adopted the 2006 Stock Incentive Plan (the "Plan"). Upon adoption, all previously existing plans were merged into the Plan and ceased to separately exist. The Plan was amended and restated effective June 2016 resulting in an increase in the maximum number of shares of common stock that may be issued under the Plan by 2,900,000 , from 7,850,000 to 10,750,000 . The Plan was further amended and restated effective September 6, 2018 resulting in an increase in the maximum number of shares of common stock that may be issued under the Plan by 1,035,000 , from 10,750,000 to 11,785,000 . The Company’s policy is to issue shares resulting from the exercise of stock options, issuance of performance stock units and conversion of restricted stock units as new shares. The Company recorded share-based stock compensation expense of $5.3 million , $6.8 million , and $5.6 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The Company adopted ASU 2016-09 in 2017 and for the year ended December 31, 2017 began recognizing forfeitures as they occurred. The 2016 stock-based compensation expense is recorded net of an estimated forfeiture rate and adjusted to reflect actual forfeiture activity. The estimated forfeiture rates applied as of December 31, 2016 ranged from 7.0% to 8.0% for various types of employees. The Company recorded $0.9 million of additional stock-based compensation expense for the year ended December 31, 2016 , for awards vested which exceeded the expense recorded using the estimated forfeiture rate. Stock Options Eligible employees receive non-qualified stock options as a portion of their total compensation. The options vest over various time periods depending upon the grant, but generally vest ratably over a four year service period. Vested options may be exercised and converted to one share of the Company’s common stock in exchange for the exercise price which is generally equal to the closing share price on the grant date. Compensation expense is measured by determining the fair value of each award using the Black-Scholes option valuation model. The fair value is then recognized over the requisite service period of the awards, which is generally the vesting period, on a straight-line basis for the entire award. The stock-based compensation expense related to stock options for the years ended December 31, 2018 , 2017 and 2016 was $2.5 million , $2.9 million , and $2.3 million , respectively. A summary of stock option activity for the years ended December 31, 2018 , 2017 and 2016 is as follows (in thousands, except per share amounts): Outstanding Options Weighted- Average Exercise Price Aggregate Intrinsic Value Outstanding at December 31, 2015 4,060 $ 8.37 $ 2,760 Granted 1,348 8.15 — Exercised (420 ) 6.27 4,455 Forfeited (227 ) 10.20 — Outstanding at December 31, 2016 4,761 8.40 8,655 Granted 568 10.73 — Exercised (428 ) 7.85 1,300 Forfeited (467 ) 10.39 539 Outstanding at December 31, 2017 4,434 8.57 9,340 Granted 912 8.20 — Exercised (662 ) 5.33 967 Forfeited (573 ) 11.21 — Outstanding at December 31, 2018 4,111 $ 8.53 $ 37 Options vested and exercisable at December 31, 2018 2,030 $ 8.68 $ 37 The Company’s stock options have a maximum term of 10 years from the date of grant. The weighted average remaining contractual life for options outstanding and options vested and exercisable at December 31, 2018 is 6.48 and 4.61 years, respectively. The weighted-average fair values and ranges of exercise prices for stock options granted during the years ended December 31, 2018 , 2017 and 2016 , which vest ratably over four or five years, are as follows (in thousands, except per share amounts): Options Granted Weighted-Average Fair Value Exercise Prices 2016 1,348 $ 3.38 $6.99 - $9.20 2017 568 $ 4.42 $9.32 - $11.47 2018 912 $ 3.37 $7.56 - $9.49 The number of vested options totaled 2.0 million , 2.5 million and 2.5 million as of December 31, 2018 , 2017 and 2016 , respectively. The aggregate intrinsic value of options outstanding and exercisable represents the total pre-tax intrinsic value (the difference between the Company’s closing stock price on the last trading day of each fiscal year and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options in 2018 , 2017 and 2016 , respectively. These amounts change based on the fair market value of the Company’s stock which was $3.74 , $10.03 and $9.98 on the last business day of the years ended December 31, 2018 , 2017 and 2016 , respectively. The following assumptions were utilized in the Black-Scholes valuation model for options granted in 2018 , 2017 and 2016 : 2018 2017 2016 Dividend yield — — — Risk-free interest rate 2.76%-3.15% 1.98%-2.34% 1.53%-2.03% Expected life 6.4 years 6.5 years 6.5 years Volatility 35.0%-36.2% 36.0%-38.0% 38.0%-50.0% No dividend yield is used as the Company does not currently, nor historically, pay dividends. The risk-free interest rate is based on actual U.S. Treasury zero-coupon rates for bonds commensurate with the expected term. Expected term is estimated based on historical experience related to similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The Company believes that its historical experience provides the best estimate of future expected life. The expected volatility assumption is based on the historical volatility of the Company’s common stock over a period commensurate with the expected term. There was $4.9 million , $5.0 million and $7.4 million of unrecognized compensation costs related to the stock options granted under the Plan as of December 31, 2018 , 2017 and 2016 , respectively. This cost is expected to be recognized over a weighted average period of 2.8 , 2.4 and 3.6 years, respectively. The following table summarizes information about all stock options outstanding for the Company as of December 31, 2018 (share amounts in thousands): Options Outstanding Options Vested Exercise Price Number Outstanding Weighted-Average Life Remaining (Years) Weighted- Average Exercise Price Number Exercisable Weighted- Average Exercise Price $0.00 - $4.36 27 0.15 $ 2.36 27 $ 2.36 $4.37 - $7.95 2,145 6.83 $ 7.19 924 $ 6.82 $7.96 - $11.97 1,621 6.68 $ 9.47 762 $ 9.25 $11.98 - $15.05 318 3.63 $ 13.28 318 $ 13.28 4,111 6.48 $ 8.53 2,030 $ 8.68 Restricted Common Shares Eligible employees receive restricted common shares as a portion of their total compensation. The restricted common shares vest over various time periods depending upon the grant, but generally vest from one to five years . The Company measures the compensation cost based on the closing market price of the Company’s common stock at the grant date. The stock-based compensation expense related to restricted common shares for the years ended December 31, 2018 , 2017 and 2016 was $2.3 million , $3.5 million and $3.3 million , respectively. A summary of restricted share activity is as follows (in thousands, except per share amounts): Outstanding Restricted Common Shares Weighted- Average Grant- Date Fair Value Nonvested Restricted Common shares at December 31, 2015 957 $ 7.66 Granted 559 $ 8.24 Vested and transferred to unrestricted common stock (429 ) $ 7.71 Forfeited (78 ) $ 8.04 Nonvested Restricted Common shares at December 31, 2016 1,009 $ 7.92 Granted 332 $ 11.00 Vested and transferred to unrestricted common stock (403 ) $ 8.28 Forfeited (166 ) $ 8.51 Nonvested Restricted Common shares at December 31, 2017 772 $ 8.98 Granted 84 $ 9.37 Vested and transferred to unrestricted common stock (341 ) $ 8.83 Forfeited (68 ) $ 9.29 Nonvested Restricted Common shares at December 31, 2018 447 $ 9.13 There were $3.0 million , $5.1 million and $7.6 million of total unrecognized compensation costs related to the restricted common shares as of December 31, 2018 , 2017 and 2016 , respectively. This cost is expected to be recognized over a weighted average period of 2.2 , 2.5 and 2.6 years, as of December 31, 2018 , 2017 and 2016 , respectively. Restricted Share Units Eligible employees receive restricted share units as a portion of their total compensation. The restricted share units vest over various time periods depending upon the grant, but generally vest from one to four years and convert to common stock at the conclusion of the vesting period. The Company measures the compensation cost based on the closing market price of the Company’s common stock at the grant date. The stock-based compensation expense related to restricted share units for the year ended December 31, 2018 was $0.7 million . A summary of restricted share unit activity is as follows (in thousands, excepts per share amounts): Outstanding Restricted Share Units Weighted- Average Grant- Date Fair Value Nonvested Restricted Share Units at December 31, 2017 — $ — Granted 577 $ 7.74 Vested and transferred to unrestricted share units (16 ) $ 7.75 Forfeited (9 ) $ 7.75 Nonvested Restricted Share Units at December 31, 2018 552 $ 7.74 There was $3.5 million of total unrecognized compensation costs related to restricted share units as of December 31, 2018 . This cost is expected to be recognized over a weighted average period of 3 years as of December 31, 2018 . Performance-Based Restricted Stock Units: During fiscal 2017, the Company granted a performance share unit ("PSUs") award to the Company's executive officers and certain other employees. The performance-based restricted stock unit awards are subject to vesting based on a performance-based condition and a service-based condition. At the end of the three-year service period, based on the cumulative adjusted earnings per share and the return on invested capital achieved by the Company between April 1, 2017 and December 31, 2019 as approved by the Compensation Committee, these performance-based restricted stock units will vest in a percentage of the target number of shares between 0% and 200% , depending on the extent the performance condition is achieved. Each of the units granted represent the right to receive one share of the Company’s common stock at a specified future date. On October 12, 2018, the Compensation Committee approved, pursuant to the 2006 Stock Incentive Plan, awards of PSUs for certain executive officers and employees. The PSUs are performance-based awards that will settle in shares of the Company's common stock in an amount between 0% and 200% of the target award level, based on the cumulative adjusted earnings per share and the return on invested capital achieved by the Company between July 1, 2018 and December 31, 2020 . As of December 31, 2018 , the number of common shares issuable upon vesting of these PSUs could range from zero to 586,574 shares. Compensation expense for PSUs is measured by determining the fair value of the award using the closing share price on the grant date and is recognized ratably from the grant date to the vesting date for the number of awards expected to vest. The amount of compensation expense recognized for PSUs is dependent upon a quarterly assessment of the likelihood of achieving the performance conditions and is subject to adjustment based on management's assessment of the Company's performance relative to the target number of shares performance criteria. A summary of performance share unit activity is as follows (share amounts in thousands): Outstanding Weighted- Average Grant- Date Fair Value Nonvested Performance Share Units at December 31, 2016 — $ — Granted 152 $ 11.10 Forfeited (24 ) $ 11.10 Nonvested Performance Share Units at December 31, 2017 128 $ 11.10 Granted 187 $ 7.36 Forfeited (22 ) $ 11.10 Nonvested Performance Share Units at December 31, 2018 293 $ 8.72 Compensation expense for PSUs is subject to adjustment based on management's assessment of the Company's performance relative to the target number of shares performance criteria. The stock-based compensation expense (benefit) related to PSUs for the year ended December 31, 2018 and 2017 was $(0.4) million and $0.4 million , respectively.

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Benefit Plans	Benefit Plans The Company adopted a 401(k) savings plan effective February 1, 2005, covering all of the Company’s employees upon completion of 30 days of service. Employees may contribute a percentage of eligible compensation on both a before-tax basis and after-tax basis. The Company has the right to make discretionary contributions to the plan. For the years ended December 31, 2018 , 2017 and 2016 , total costs incurred from the Company’s contributions to the 401(k) plan were $0.0 million , $1.0 million , and $1.0 million , respectively.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Agreements and Services with Related Parties The Company provides print procurement services to Arthur J. Gallagher & Company. J. Patrick Gallagher, Jr., a member of the Company’s Board of Directors, is the Chairman, President and Chief Executive Officer of Arthur J. Gallagher & Company and has a direct ownership interest in Arthur J. Gallagher & Company. The total amount billed for such procurement services during the years ended December 31, 2018 , 2017 and 2016 was $1.6 million , $1.9 million and $1.9 million , respectively. Additionally, Arthur J. Gallagher & Company provides insurance brokerage and risk management services to the Company. As consideration for these services, Arthur J. Gallagher & Company billed the Company $0.1 million , $0.1 million and $0.2 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The amounts receivable from Arthur J. Gallagher & Company were $0.3 million and $0.2 million as of December 31, 2018 and 2017 , respectively. In the fourth quarter of 2017 the Company began providing marketing execution services to Enova International, Inc. David Fisher, a member of the Company’s Board of Directors, is the Chairman and Chief Executive Officer of Enova International, Inc. and has a direct ownership interest in Enova International, Inc. The total amount billed for such procurement services during the years ended December 31, 2018 and 2017 was $10.1 million and $0.1 million , respectively. The amounts receivable from Enova, Inc. were $2.0 million and $0.1 million as of December 31, 2018 and 2017 .

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information Supplemental cash flow information is as follows (in thousands): Year Ended December 31, 2018 2017 2016 Cash paid for: Interest $ 7,149 $ 4,072 $ 4,338 Income taxes 5,810 9,838 5,845 $ 12,959 $ 13,910 $ 10,183 Noncash investing and financing activities: Buildings - Build to Suit Leases $ 48,428 $ — $ — Repurchases of common stock — 91 — Shares issued as payment of contingent consideration — 4,678 2,012 $ 48,428 $ 4,769 $ 2,012

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Business Segments	Business Segments Segment information is prepared on the same basis that the Company's Chief Executive Officer, who is its chief operating decision maker (“CODM”), manages the segments, evaluates financial results, and makes key operating decisions. During the third quarter of 2018, the Company changed its reportable segments by disaggregating the Company's previously disclosed single International reportable segment into two separate reportable segments. The Company is now organized and managed by the CODM as three operating segments, which also represent the Company's reportable segments: North America, EMEA, and LATAM. The North America segment includes operations in the United States and Canada; the EMEA segment includes operations in the United Kingdom, continental Europe, the Middle East, Africa, and Asia; and the LATAM segment includes operations in Mexico, Central America, and South America; Other consists of intersegment eliminations, shared service activities, and unallocated corporate expenses. All transactions between segments are presented at their gross amounts and eliminated through Other. Prior period amounts have been restated to reflect this change. Management evaluates the performance of its operating segments based on revenues and Adjusted EBITDA, which is a non-GAAP financial measure. The accounting policies of each of the operating segments are the same as those described in the summary of significant accounting policies in Note 2 and the product offerings within each reportable segment are consistent as outlined in Note 1. Adjusted EBITDA represents income from operations excluding depreciation and amortization, stock-based compensation expense, income/expense related to changes in the fair value of contingent consideration liabilities and other items as described below. Management does not evaluate the performance of its operating segments using asset measures. The identifiable assets by segment disclosed in this note are those assets specifically identifiable within each segment and include cash, accounts receivable, inventory, goodwill and intangible assets. Shared service assets are primarily comprised of short-term investments, capitalized internal-use software and net property and equipment for the corporate headquarters. The table below presents financial information for the Company's reportable operating segments and Other for the fiscal years noted (in thousands): North America EMEA LATAM Other (2) Total Fiscal 2018: Revenue from third parties $ 777,426 $ 260,950 $ 83,175 $ — $ 1,121,551 Revenue from other segments 3,200 9,500 217 (12,917 ) — Total revenue 780,626 270,450 83,392 (12,917 ) 1,121,551 Adjusted EBITDA (1) 61,780 6,410 3,082 (43,372 ) 27,900 Fiscal 2017: Revenue from third parties 780,511 265,669 92,181 — 1,138,361 Revenue from other segments 5,469 13,444 1,693 (20,606 ) — Total revenue 785,980 279,113 93,874 (20,606 ) 1,138,361 Adjusted EBITDA (1) 74,230 15,242 4,278 (35,867 ) 57,883 Fiscal 2016: Revenue from third parties 736,140 267,168 91,094 — 1,094,402 Revenue from other segments 6,029 13,070 4,456 (23,555 ) — Total revenue 742,169 280,238 95,550 (23,555 ) 1,094,402 Adjusted EBITDA (1) 68,434 14,752 6,818 (31,392 ) 58,612 (1) Adjusted EBITDA, which represents income from operations with the addition of depreciation and amortization, stock-based compensation expense, income/expense related to changes in the fair value of contingent consideration liabilities, goodwill and intangible asset impairment charges, restructuring charges, senior leadership transition and other employee-related costs, business development realignment, professional fees related to ASC 606 implementation, executive search costs, restatement-related professional fees, other professional fees, obsolete retail inventory charges, and Czech currency impact on procurement margin is considered a non-GAAP financial measure under SEC regulations. Income from operations is the most directly comparable financial measure calculated in accordance with GAAP. The Company presents this measure as supplemental information to help investors better understand trends in its business results over time. The Company's management team uses Adjusted EBITDA to evaluate the performance of the business. Adjusted EBITDA is not equivalent to any measure of performance required to be reported under GAAP, nor should this data be considered an indicator of the Company's overall financial performance and liquidity. Moreover, the Adjusted EBITDA definition the Company uses may not be comparable to similarly titled measures reported by other companies. (2) Other consists of intersegment eliminations, shared service activities and unallocated corporate expenses. The table below reconciles Adjusted EBITDA and Income (loss) before income taxes in the Company's consolidated statement of operations (in thousands): Year Ended December 31, 2018 2017 2016 Adjusted EBITDA $ 27,900 $ 57,883 $ 58,612 Depreciation and amortization (12,988 ) (13,390 ) (17,916 ) Stock-based compensation expense (5,302 ) (6,820 ) (5,572 ) Change in fair value of contingent consideration — (677 ) (10,417 ) Goodwill impairment (46,319 ) — — Intangible and other asset impairments (18,121 ) — (70 ) Restructuring charges (6,031 ) — (5,615 ) Senior leadership transition and other employee-related costs (1,410 ) — — Business development realignment — (715 ) — Professional fees related to ASC 606 implementation (1,092 ) (829 ) — Executive search costs (235 ) (454 ) — Restatement-related professional fees (2,430 ) — — Other professional fees (507 ) — — Obsolete retail inventory (950 ) — — Czech currency impact on procurement margin — (860 ) — Total other expense (9,147 ) (6,420 ) (4,239 ) (Loss) income before income taxes $ (76,632 ) $ 27,718 $ 14,783 The table below presents total assets for the Company's reportable segments and Other as of December 31, 2018 and December 31, 2017 . December 31, 2018 2017 North America $ 399,288 $ 401,415 EMEA 160,322 171,086 LATAM 43,028 57,235 Other 20,038 19,902 Total Assets $ 622,676 $ 649,638 The Company had long-lived assets, consisting of net property and equipment, in the United States of $31.1 million and $21.8 million at December 31, 2018 and 2017 , respectively. Long-lived assets in foreign countries were $51.8 million and $14.9 million at December 31, 2018 and 2017 , respectively. The Company does not record revenue for financial reporting purposes by product and service category and therefore, it is impracticable for the Company to report revenue in such manner.

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited) (Notes)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	Quarterly Financial Data (Unaudited) The tables below are a condensed summary of the Company’s unaudited quarterly statements of income and quarterly earnings per share data for the years ended December 31, 2018 and 2017 (in thousands). Year Ended December 31, 2018 First Second Third Fourth Revenue $ 274,539 $ 281,967 $ 270,850 $ 294,195 Gross profit 66,067 64,871 64,042 60,118 Income (loss) from operations 1,241 2,355 (43,212 ) (27,869 ) Net loss (1,684 ) (299 ) (44,937 ) (29,251 ) Net loss per share: Basic $ (0.03 ) $ (0.01 ) $ (0.87 ) $ (0.56 ) Diluted $ (0.03 ) $ (0.01 ) $ (0.87 ) $ (0.56 ) Year Ended December 31, 2017 First Second Third Fourth Revenue $ 264,405 $ 280,066 $ 288,523 $ 305,367 Gross profit 64,704 70,046 71,921 68,787 Income from operations 9,225 9,926 11,585 3,402 Net income (loss) 5,678 4,374 7,116 (738 ) Net income (loss) per share: Basic $ 0.11 $ 0.08 $ 0.13 $ (0.01 ) Diluted $ 0.10 $ 0.08 $ 0.13 $ (0.01 )

SCHEDULE II-VALUATION AND QUALI

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS Valuation and Qualifying Accounts (in thousands) Description Balance at Beginning of Period Charged to Expense (Uncollectible Accounts Written Off, Net of Recoveries) Balance at End of Period Fiscal year ended December 31, 2018 Allowance for doubtful accounts $ 3,534 $ 3,601 $ (2,255 ) $ 4,880 Fiscal year ended December 31, 2017 Allowance for doubtful accounts $ 2,622 $ 454 $ 457 $ 3,534 Fiscal year ended December 31, 2016 Allowance for doubtful accounts $ 1,231 $ 2,171 $ (780 ) $ 2,622

Subsequent Events (Notes)

Subsequent Events (Notes)	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In February 2019, upon approval of the Board of Directors, the Company entered into non-binding term sheets with financial institutions to refinance its outstanding debt. The Company intends to modify its debt structure to include a term loan instrument as well as an asset-backed facility with both containing first or second liens on a significant portion of the Company's assets. The Company is currently in the process of finalizing terms to these arrangements and expects them to be completed in the second quarter of 2019. Refer to Note 9 for more on the Company's debt.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation The consolidated financial statements include the accounts of InnerWorkings, Inc. and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
Preparation of Financial Statements and Use of Estimates	Preparation of Financial Statements and Use of Estimates The preparation of the consolidated financial statements is in conformity with accounting principles generally accepted in the United States ("GAAP"). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. On an ongoing basis, the Company evaluates its estimates, including those related to product returns, allowance for doubtful accounts, inventories and inventory valuation, valuation and impairments of goodwill and long-lived assets, income taxes, accrued bonus, contingencies, stock-based compensation and litigation costs. The Company bases its estimates on historical experience and on other assumptions that its management believes are reasonable under the circumstances. These estimates form the basis for making judgments about the carrying value of assets and liabilities when those values are not readily apparent from other sources. Actual results can differ from those estimates.
Foreign Currency Translation	Foreign Currency Translation The Company determines the functional currency for its parent company and each of its subsidiaries by reviewing the currencies in which their respective operating activities occur. Assets and liabilities of these operations are translated into U.S. currency at the rates of exchange at the balance sheet date. Income and expense items are translated at average monthly rates of exchange. The resulting translation adjustments are included in accumulated other comprehensive income (loss), a separate component of stockholders’ equity. Transaction gains and losses arising from activities in other than the applicable functional currency are calculated using average exchange rates for the applicable period and reported in net income as a non-operating item in each period. Non-monetary balance sheet items denominated in a currency other than the applicable functional currency are translated using the historical rate. The net realized (losses) gains on foreign currency transactions were $(1.1) million , $(1.4) million and $0.6 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Highly Inflationary Accounting In the second quarter of 2018, the Argentinian economy was classified as highly inflationary under GAAP due to multiple years of increasing inflation, the devaluation of the Argentine peso ("ARS") and increasing borrowing rates. Effective July 1, 2018, the Company's Argentinian subsidiary is being accounted for under highly inflationary accounting rules, which principally means all transactions are recorded in U.S. dollars. The Company uses the official ARS exchange rate to translate the results of its Argentinian operations into U.S. dollars. As of December 31, 2018, the Company had a balance of net monetary assets denominated in ARS of approximately $50.7 million ARS, and the exchange rate was approximately $37.7 ARS per U.S. dollar. As of December 31, 2018, the Company recorded $0.1 million of favorable currency impacts recorded within Other income (expense). For the year ended December 31, 2018, the Company had revenue and gross margin of $4.1 million and $0.4 million , respectively at its Argentinian operations.
Revenue Recognition	Revenue Recognition Revenue is measured based on consideration specified in a contract with a customer and the Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer which may be at a point in time or over time. Unbilled revenue represents shipments or deliveries that have been made to customers for which the related account receivable has not yet been invoiced. Shipping and handling costs after control over a product has transferred to a customer are expensed as incurred and are included in cost of goods sold in the condensed consolidated statements of operations. In accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 606, Revenue from Contracts with Customers , the Company generally reports revenue on a gross basis because the Company typically controls the goods or services before transferring to the customer. Under these arrangements, the Company is primarily responsible for the fulfillment, including the acceptability, of the marketing materials and other products or services. In addition, the Company has reasonable discretion in establishing the price, and in some transactions, the Company also has inventory risk and is involved in the determination of the nature or characteristics of the marketing materials and products. In some arrangements, the Company is not primarily responsible for fulfilling the goods or services. In arrangements of this nature, the Company does not control the goods or services before they are transferred to the customer and such revenue is reported on a net basis. A portion of service revenue, including stand-alone creative and other services, may be earned over time; however, the difference from recognizing that revenue over time compared to a point in time (i.e., when the service is completed and accepted by the customer) is not material. Service revenue has not been material to the Company's overall revenue to date. The Company records taxes collected from customers and remitted to governmental authorities on a net basis.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments purchased with a maturity of three months or less to be cash equivalents.
Accounts Receivable	Accounts Receivable Accounts receivable are uncollateralized customer obligations due under normal trade terms. Payment terms with customers are generally 30 to 90 days from the invoice date. Accounts receivable are stated at the amount billed to the customer, less an estimate for potential bad debts. Interest is not generally accrued on outstanding balances. The carrying amount of accounts receivable is reduced by an allowance that reflects management’s best estimate of the amounts that will not be collected. The Company estimates the collectability of its accounts receivable based on a combination of factors including, but not limited to, customer credit ratings and historical experience. In circumstances where the Company is aware of a specific customer’s inability to meet its financial obligations to the Company (e.g., bankruptcy filings or substantial downgrading of credit ratings), the Company provides allowances for bad debts against amounts due to reduce the net recognized receivable to the amount it reasonably believes will be collected. Aged receivables are reviewed on a regular basis and uncollectible accounts are written off when all reasonable collection efforts have been exhausted.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined by the first-in, first-out method. Net realizable value is based upon an estimated average selling price reduced by estimated costs of disposal. Inventories primarily consist of purchased finished goods. Finished goods inventory includes consigned inventory held on behalf of customers as well as inventory held at third-party fulfillment centers and subcontractors.
Property and Equipment	Property and Equipment Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. The estimated useful lives, by asset class, are as follows: Computer equipment 3 years Software, including internal-use software 1 to 5 years Office equipment 5 years Furniture and fixtures 7 years Leasehold improvements are depreciated using the straight-line method over the shorter of their estimated useful lives or the terms of the related leases. The Company reviews long-lived assets, including amortizable intangible assets, for realizability on an ongoing basis. Changes in depreciation, generally accelerated depreciation, are determined and recorded when estimates of the remaining useful lives or residual values of long-term assets change. The Company also reviews for impairment when conditions exist that indicate the carrying amount of the asset group may not be fully recoverable. In those circumstances, the Company performs undiscounted operating cash flow analyses to determine if an impairment exists. When testing for asset impairment, the Company groups assets and liabilities at the lowest level for which cash flows are separately identifiable. Any impairment loss is calculated as the excess of the asset’s carrying value over its estimated fair value. Fair value is estimated based on the discounted cash flows for the asset group over the remaining useful life or based on the expected cash proceeds for the asset less costs of disposal. In the third quarter of 2018 , the Company recognized a $3.0 million non-cash, long-lived asset impairment charge related to a legacy ERP system in the EMEA segment. During the fourth quarter of 2017 , the Company ceased use of one of its internal-use software platforms and recorded $0.4 million of expense within depreciation and amortization.
Internal-Use Software	Internal-Use Software In accordance with ASC 350-40, Intangibles—Goodwill and Other, Internal-Use Software, certain costs incurred in the planning and evaluation stage of internal-use computer software are expensed as incurred. Certain costs incurred during the application development stage are capitalized and included in property and equipment. Capitalized internal-use software costs are depreciated over the expected economic useful life of three to six years using the straight-line method. Capitalized internal-use software asset depreciation expense for the years ended December 31, 2018 , 2017 and 2016 was $6.1 million , $5.4 million and $9.2 million , respectively and is included in total depreciation expense. At December 31, 2018 and 2017 , the net book value of internal-use software was $25.4 million and $29.7 million , respectively. Effective October 1, 2016, the Company changed the estimated useful lives of some of its software assets. The estimated useful lives of such assets were increased by an average of approximately 4.5 years. See Note 8.
Goodwill	Goodwill Goodwill represents the excess of purchase price and related costs over the value assigned to the net tangible and identifiable intangible assets of businesses acquired. In accordance with ASC 350, Intangibles—Goodwill and Other ("ASC 350") , goodwill is not amortized, but instead is tested for impairment annually or more frequently if circumstances indicate a possible impairment may exist. Absent any interim indicators of impairment, the Company tests for goodwill impairment as of the first day of its fourth fiscal quarter of each year. Under ASC 350, an entity is permitted 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 quantitative goodwill impairment test. If the quantitative test is required, the fair value for each reporting unit is compared to its book value including goodwill. In the case that the fair value is less than the book value of the goodwill, the difference is recognized as an impairment. During the third quarter of 2018 , the Company performed an interim impairment assessment and concluded that the EMEA and LATAM reporting units were impaired. As a result, impairment charges of $20.8 million and $7.1 million were recorded in the EMEA and LATAM reporting units, respectively. See Note 5 for further discussion of the impairment. The Company performed its annual impairment test as of October 1, 2018 , its measurement date, and concluded there was no impairment in any of its reporting units. As of December 31, 2018 , the Company performed an interim impairment assessment and concluded that the North America reporting unit was impaired. As a result, an impairment charge of $18.4 million was recorded.
Other Intangible Assets	Other Intangible Assets In accordance with ASC 350 , Intangibles—Goodwill and Other, the Company amortizes its intangible assets with finite lives over their respective estimated useful lives and reviews for impairment whenever impairment indicators exist. Impairment indicators could include significant under-performance relative to the historical or projected future operating results, significant changes in the manner of use of assets, significant negative industry or economic trends or significant changes in the Company’s market capitalization relative to net book value. Any changes in key assumptions used by the Company, including those set forth above, could result in an impairment charge and such a charge could have a material adverse effect on the Company’s consolidated results of operations. The Company’s intangible assets consist of customer lists, non-competition agreements, trade names and patents. The Company’s customer lists, which have an estimated weighted-average useful life of approximately 14 years, are being amortized using the economic life method. The Company’s non-competition agreements, trade names and patents are being amortized on the straight-line basis over their estimated weighted-average useful lives of approximately 4 years, 13 years and 9 years, respectively. In the third quarter of 2018 , the Company recognized a $13.8 million non-cash, intangible asset impairment charge related to certain customer lists. Of the total charge, $0.6 million related to the LATAM segment and $13.2 million related to the EMEA segment. In the fourth quarter of 2016 , the Company recorded a non-cash, intangible asset impairment charge of $0.1 million related to a trade name acquired in a prior year business combination in the EMEA segment.
Shipping and Handling Costs	Shipping and Handling Costs Shipping and handling costs are classified in cost of goods sold in the consolidated statements of operations.
Income Taxes	Income Taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes , under which deferred tax assets and liabilities are recognized based upon anticipated future tax consequences attributable to differences between financial statement carrying values of assets and liabilities and their respective tax bases. A valuation allowance is established to reduce the carrying value of deferred tax assets if it is considered more likely than not that such assets will not be realized. Any change in the valuation allowance would be charged to income in the period such determination was made. The Company recognizes the tax benefit from an uncertain tax position only if it is “more likely than not” the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50% likelihood of being realized upon settlement. The Company’s policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. There was nominal interest and penalties related to unrecognized tax benefits for the years ended December 31, 2018 , 2017 and 2016 . Based on the Company’s evaluation, it was concluded that there are no significant uncertain tax positions requiring recognition in its financial statements. Examinations by tax authorities have been completed through 2014 in the Czech Republic, United Kingdom, and United States, and through 2015 in France. On December 22, 2017, the U.S. government enacted comprehensive Federal tax legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (the “Act”). The Act makes changes to the corporate tax rate, business-related deductions and taxation of foreign earnings, among others, that will generally be effective for taxable years beginning after December 31, 2017. The Act requires a U.S. shareholder of a foreign corporation to include global intangible low-taxed (“GILTI”) in taxable income. The accounting policy of the Company is to record any tax on GILTI in the provision for income taxes in the year it is incurred.
Advertising	Advertising Costs of advertising, which are expensed as incurred by the Company, were $1.4 million , $1.2 million and $1.4 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and are included in selling, general and administrative expenses in the consolidated statement of operations.
Comprehensive Income	Comprehensive Income (Loss) The components of accumulated comprehensive loss included in the Consolidated Balance Sheets at December 31, 2018 and 2017 are as follows (in thousands): Foreign Currency Translation Adjustments Balance at December 31, 2016 $ (20,949 ) Other comprehensive income before reclassifications 1,720 Net current-period other comprehensive income 1,720 Balance at December 31, 2017 (19,229 ) Other comprehensive loss before reclassifications (5,080 ) Net current-period other comprehensive loss (5,080 ) Balance at December 31, 2018 $ (24,309 )
Share-Based Compensation	Stock-Based Compensation The Company accounts for stock-based compensation awards in accordance with ASC 718, Compensation-Stock Compensation . Compensation expense is measured by determining the fair value of each award using the Black-Scholes option valuation model for stock options or the closing share price on the grant date for restricted shares and restricted share units. The fair value is then recognized over the requisite service period of the awards, which is generally the vesting period, on a straight-line basis for the entire award. This option valuation model requires assumptions, which impact the assumed fair value, including the expected life of the stock option, the risk-free interest rate, expected volatility of the stock over the expected life and the expected dividend yield. The Company uses historical data to determine these assumptions and if these assumptions change significantly for future grants, share-based compensation expense will fluctuate in future years. Expected term is estimated based on historical experience related to similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The Company believes that historical experience provides the best estimate of future expected life. The risk-free interest rate is based on actual U.S. Treasury zero-coupon rates for bonds commensurate with the expected term. The expected volatility assumption is based on the historical volatility of the Company's common stock over a period commensurate with the expected term. Forfeitures are recorded as they occur. On June 1, 2017, the Compensation Committee approved, pursuant to the 2006 Stock Incentive Plan, awards of performance share units (“PSUs”) for certain executive officers and employees. The PSUs are performance-based awards that will settle in shares of the Company's common stock, in an amount between 0% and 200% of the target award level, based on the cumulative adjusted earnings per share and the return on invested capital achieved by the Company between April 1, 2017 and December 31, 2019. On October 12, 2018, the Compensation Committee approved, pursuant to the 2006 Stock Incentive Plan, awards of PSUs for certain executive officers and employees. These PSUs are performance-based awards that will settle in shares of the Company's common stock in an amount between 0% and 200% of the target award level, based on the cumulative adjusted earnings per share and the return on invested capital achieved by the Company between July 1, 2018 and December 31, 2020. Compensation expense for PSUs is measured by determining the fair value of the award using the closing share price on the grant date and is recognized ratably from the grant date to the vesting date for the number of awards expected to vest. The amount of compensation expense recognized for PSUs is dependent upon a quarterly assessment of the likelihood of achieving the performance conditions and is subject to adjustment based on management's assessment of the Company's performance relative to the target number of shares performance criteria. Stock-based compensation expense is included in selling, general and administrative expenses in the consolidated statement of operations.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Adopted Accounting Standards In the first quarter of 2018, the Company adopted FASB Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606) and all the related amendments (the “new revenue standard”), which outlines a single comprehensive model for entities to use in accounting for revenue using a five-step process that supersedes virtually all existing revenue guidance. The Company adopted the new revenue standard using the modified retrospective transition method. The Company recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings and the effects of the adoption of the new revenue standard on the Company's statement of cash flows are discussed in Note 3. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. In the first quarter of 2018, the Company adopted ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments , which amends ASC 230, Statement of Cash Flows . This ASU provides guidance on the statement of cash flows presentation of certain transactions where diversity in practice exists. The new guidance was applied retrospectively and the impact of this adoption resulted in a $4.4 million and an $0.8 million increase in cash flows from financing activities and a corresponding decrease in cash flows from operating activities in the condensed consolidated statements of cash flows for the twelve months ended December 31, 2017 and December 31, 2016, respectively, due to contingent liability payments made in excess of the original liability recognized at the time of acquisition during that period. In the first quarter of 2018, the Company adopted ASU No. 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory , which amends the timing of recognition of tax consequences of intercompany asset transfers other than inventory when the transfer occurs and removes the exception to postpone recognition until the asset has been sold to an outside party. The new guidance was applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings. The impact of this adoption did not have a material effect on the consolidated financial statements. In the first quarter of 2018, the Company early adopted ASU No. 2017-04, Simplifying the Test for Goodwill Impairment , which simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. The new guidance was applied prospectively, and the impact of this adoption did not have a material effect on the consolidated financial statements. In the first quarter of 2018, the Company adopted ASU No. 2017-09, Scope of Modification Accounting , which amends ASC 718, Compensation - Stock Compensation . This ASU amends the scope of modification accounting for share-based payment arrangements and provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. The new guidance allows companies to make certain changes to awards without accounting for them as modifications. It did not change the accounting for modifications. The new guidance was applied prospectively to awards modified on or after the adoption date. The impact of this adoption did not have a material effect on the consolidated financial statements. In third quarter of 2018, the Company early adopted ASU No. 2018-15, Customer's Accounting for Implementation Costs Incurred In A Cloud Computing Arrangement That Is A Service Contract , which amends the guidance in ASC 350, Intangibles - Goodwill and Other , to align a customer's accounting for implementation costs incurred in a cloud computing arrangement that is a service contract with the guidance on capitalizing costs related to internal-use software. Capitalized costs for internal-use software are included in property and equipment, net in the condensed consolidated financial statements. The new guidance was applied prospectively, and the impact of this adoption did not have a material effect on the consolidated financial statements. In the fourth quarter of 2018, the Company early-adopted ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting , which simplifies the accounting for share-based payments granted to nonemployees for goods and services. Under the ASU, most of the guidance on such payments to nonemployees would be aligned with the requirements for share-based payments granted to employees. This ASU is effective for annual periods beginning after December 15, 2018 and interim periods within those annual periods, and early adoption is permitted. The impact of this adoption did not have a material effect on the consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and requires disclosure of key information about leasing arrangements. ASU 2016-02 requires lessees to recognize a right-of-use asset and a lease liability for most leases in the balance sheet as well as other qualitative and quantitative disclosures. ASU 2016-02 requires using a modified retrospective transition method and provides certain practical expedients. The Company has elected the package of practical expedients to not reassess prior conclusions related to contracts containing leases, lease classification and initial direct costs. The Company elected not to separate non-lease components from lease components and to account for both as a single lease component by class of the underlying asset. In March 2018, the FASB approved a new, optional transition method that will give companies the option to use the effective date as the date of initial application on transition. The Company is electing the transition method, and as a result, the Company will not adjust its comparative period financial information or make the new required lease disclosures for periods before the effective date. The transition method the Company elected for adoption of the standard requires us to make a cumulative effect adjustment as of January 1, 2019. The most significant impact from adopting the standard is the initial recognition of operating lease right-of-use assets and lease liabilities on the Company's balance sheet, while the Company's accounting for finance leases (i.e., capital leases) remains substantially unchanged. The Company continues to finalize its implementation efforts and currently estimate recording, during the first quarter of 2019, approximately $35.2 million to $47.9 million of right of use assets and liabilities on its consolidated balance sheet. The impact of ASU 2016-02 is non-cash in nature, therefore, it will not affect the Company’s cash flows. The Company has also made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet. It will continue to recognize those lease payments in the Consolidated Statement of Operations on a straight-line basis over the lease term. In addition, the Company expects to derecognize $48.4 million from Property and equipment and the $47.4 million corresponding liability (accounted for under the finance method) recognized as of December 31, 2018 related to build-to-suit leases. Refer to Footnote 10 for further details. The transition method the Company elected for adoption of the standard requires us to make a cumulative effect adjustment as of January 1, 2019 and the Company does not believe this amount will be material to the Consolidated Statements of Operations or Cash Flows. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which requires entities to measure the impairment of certain financial instruments, including trade receivables, based on expected losses rather than incurred losses. The effective date is for fiscal years beginning after December 15, 2019, with early adoption permitted for financial statement periods beginning after December 15, 2018. The Company is evaluating the potential effects of the ASU on the consolidated financial statements. In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , which amends ASC 220, Income Statement - Reporting Comprehensive Income . This ASU allows a reclassification from accumulated OCI to retained earnings for stranded tax effects resulting from tax reform. This update is effective for fiscal years beginning after December 15, 2018, including interim periods therein, and early adoption is permitted. The Company does not expect to reclassify these stranded tax effects from U.S. tax reform when the Company adopts the ASU. In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which amends ASC 820, Fair Value Measurement . This ASU modifies the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosures. The effective date is the first quarter of fiscal year 2021, with early adoption permitted for the removed disclosures and delayed adoption until fiscal year 2021 permitted for the new disclosures. The removed and modified disclosures will be adopted on a retrospective basis and the new disclosures will be adopted on a prospective basis. The Company is evaluating the potential effects of the ASU on the consolidated financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Schedule of Property and Equipment	Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. The estimated useful lives, by asset class, are as follows: Computer equipment 3 years Software, including internal-use software 1 to 5 years Office equipment 5 years Furniture and fixtures 7 years Property and equipment at December 31, 2018 and 2017 , respectively, consisted of the following (in thousands): 2018 2017 Computer equipment $ 12,258 $ 10,985 Software, including internal-use software 82,426 78,410 Office equipment and furniture 7,315 6,111 Buildings 49,169 — Leasehold improvements 4,394 3,576 Total Property and Equipment, Gross 155,562 99,082 Less accumulated depreciation (72,629 ) (62,368 ) Property and Equipment, Net $ 82,933 $ 36,714
Schedule of AOCI	The components of accumulated comprehensive loss included in the Consolidated Balance Sheets at December 31, 2018 and 2017 are as follows (in thousands): Foreign Currency Translation Adjustments Balance at December 31, 2016 $ (20,949 ) Other comprehensive income before reclassifications 1,720 Net current-period other comprehensive income 1,720 Balance at December 31, 2017 (19,229 ) Other comprehensive loss before reclassifications (5,080 ) Net current-period other comprehensive loss (5,080 ) Balance at December 31, 2018 $ (24,309 )

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	As Reported December 31, 2018 Adjustments As Adjusted Without Adoption of ASC 606 Condensed consolidated balance sheet Assets: Other non-current assets $ 2,976 (1,152 ) $ 1,824 Liabilities: Deferred income taxes $ 8,178 (128 ) $ 8,050 Stockholders' equity: Retained earnings $ 48,905 (1,024 ) $ 47,881 As Reported Year Ended December 31, 2018 Adjustments As Adjusted Without Adoption of ASC 606 Condensed consolidated statement of operations Operating expenses: Selling, general and administrative expenses $ 239,124 $ 70 $ 239,194 Intangible and other asset impairments 18,121 (1,274 ) 16,847 (Loss) income from operations (67,485 ) 1,204 (66,281 ) (Loss) income before taxes (76,632 ) 1,204 (75,428 ) (Benefit) provision for income tax (461 ) 306 (155 ) Net (loss) income (76,171 ) 898 (75,273 ) Basic (loss) earnings per share $ (1.46 ) $ 0.02 $ (1.44 ) Diluted (loss) earnings per share $ (1.46 ) $ 0.02 $ (1.44 )

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Contingent Consideration	Acquisitions Contingent Consideration In connection with certain of the Company’s acquisitions, contingent consideration is payable in cash or common stock upon the achievement of certain performance measures over future periods. The Company recorded the acquisition date fair value of the contingent consideration liability as additional purchase price. The process for determining the fair value of the contingent consideration liability consists of reviewing financial forecasts and assessing the likelihood of reaching the required performance measures based on factors specific to each acquisition as well as the Company’s historical experience with similar arrangements. Subsequent to the acquisition date, the Company estimates the fair value of the contingent consideration liability each reporting period and any adjustments made to the fair value are recorded in the Company’s results of operations. If an acquisition reaches the required performance measures within the reporting period, the fair value of the contingent consideration liability is increased to 100% , the maximum potential payment and reclassified to Due to seller. On June 30, 2017 , the EYELEVEL acquisition reached the required performance measures at the end of its earnout period and the balance of the fair value of the contingent consideration liability was reclassified to due to seller. During the third quarter of 2017 the company paid $17.7 million to settle the final balance owed to the sellers. As of December 31, 2018 and 2017 , there are and were no outstanding contingent consideration liabilities. During the twelve months ended December 31, 2018 and 2017 and 2016 , the Company recorded expense of $0.0 million , $0.7 million and $10.4 million , respectively, due to changes in the fair value of the contingent consideration liability.
Schedule of Equity Interest Issued or Issuable	The following table presents the number of shares issued as consideration for acquisitions and contingent consideration and the corresponding value of those shares during the years ended December 31, 2018 , 2017 and 2016 (in thousands, except share value amounts): Shares of Common Stock Issued Value of Shares Average Share Value Year ended December 31, 2018: Payments of contingent consideration — — — Year ended December 31, 2017: Payments of contingent consideration 441 $ 4,678 $ 10.61 Year ended December 31, 2016: Payments of contingent consideration 244 $ 2,012 $ 8.25

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following is a summary of the goodwill balance for each reportable segment as of December 31 (in thousands): North America EMEA LATAM Total Balance as of December 31, 2016 $ 170,757 $ 23,264 $ 8,680 $ 202,700 Foreign exchange impact (72 ) (1,449 ) (1,233 ) (2,754 ) Balance as of December 31, 2017 170,685 21,815 7,447 199,946 Goodwill impairment (18,432 ) (20,778 ) (7,109 ) (46,319 ) Foreign exchange impact (95 ) (1,037 ) (338 ) (1,469 ) Balance as of December 31, 2018 $ 152,158 $ — $ — $ 152,158

Other Intangible Assets (Tables

Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following is a summary of the Company’s other intangible assets as of December 31 (in thousands): 2018 2017 Weighted Average Life Customer lists $ 73,792 $ 74,615 14.4 Non-competition agreements 950 964 4.1 Trade names 2,510 2,510 13.3 Patents 57 57 9.0 77,309 78,146 Less accumulated amortization and impairment (67,481 ) (50,583 ) Intangible assets, net $ 9,828 $ 27,563
Schedule of Future Amortization Expense	The estimated amortization expense for the next five years and thereafter, is as follows (in thousands): 2019 $ 2,122 2020 2,021 2021 1,783 2022 1,407 2023 961 Thereafter 1,534 $ 9,828

Restructuring Activities and _2

Restructuring Activities and Other Charges (Tables)	12 Months Ended
	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Charges	The following table summarizes the restructuring activities for the 2018 Restructuring Plan for the year ended December 31, 2018 (in thousands): Employee Severance and Related Benefits Lease and Contract Termination Costs Other Total Balance at December 31, 2017 $ — $ — $ — $ — Charges 3,257 512 2,262 6,031 Cash Payments (2,594 ) (226 ) (1,557 ) (4,377 ) Non-cash settlements/adjustments (305 ) — — (305 ) Balance at December 31, 2018 $ 358 $ 286 $ 705 $ 1,349 During the year ended December 31, 2018 , the Company recorded the following restructuring costs within loss from operations (in thousands): North America EMEA LATAM Other Total For the Year Ended December 31, 2018 Restructuring charges $ 882 $ 2,496 $ 368 $ 2,285 $ 6,031 Employee Severance and Related Benefits Lease and Contract Termination Costs Other Total Balance at December 31, 2017 $ 484 $ — $ — $ 484 Cash payments (47 ) — — (47 ) Non-cash settlements / adjustments 49 — — 49 Balance at December 31, 2018 $ 486 $ — $ — $ 486

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. The estimated useful lives, by asset class, are as follows: Computer equipment 3 years Software, including internal-use software 1 to 5 years Office equipment 5 years Furniture and fixtures 7 years Property and equipment at December 31, 2018 and 2017 , respectively, consisted of the following (in thousands): 2018 2017 Computer equipment $ 12,258 $ 10,985 Software, including internal-use software 82,426 78,410 Office equipment and furniture 7,315 6,111 Buildings 49,169 — Leasehold improvements 4,394 3,576 Total Property and Equipment, Gross 155,562 99,082 Less accumulated depreciation (72,629 ) (62,368 ) Property and Equipment, Net $ 82,933 $ 36,714

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	The Company leases many of its office facilities for various terms under long-term, noncancelable operating lease agreements. The leases expire at various dates from fiscal year 2019 through fiscal year 2028. Future minimum lease payments are presented below (in thousands): Operating Leases 2019 $ 6,383 2020 5,017 2021 4,422 2022 3,245 2023 2,068 Thereafter 1,966 Total minimum lease payments $ 23,101

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Contingency [Line Items]
Summary of Income Tax Contingencies [Table Text Block]	Uncertain tax positions Balance at December 31, 2017 $ 499 Additions (subtractions) based on tax positions related to the current year — Additions (subtractions) based on tax positions related to the prior year — Interest and penalties 23 Balance at December 31, 2018 $ 522
Schedule of Components of Income Tax Expense (Benefit)	The (benefit) provision for income taxes consisted of the following components for the years ended December 31, 2018 , 2017 and 2016 (in thousands): Year Ended December 31, 2018 2017 2016 Current income tax expense (benefit): Federal (781 ) 3,076 477 State 180 62 159 Foreign 4,581 4,078 5,972 Total current income tax expense 3,980 7,216 6,608 Deferred income tax expense (benefit): Federal (3,250 ) 1,959 4,165 State (62 ) 1,575 414 Foreign (1,129 ) 538 (353 ) Total deferred income tax expense (4,441 ) 4,072 4,226 (Benefit) provision for income taxes $ (461 ) $ 11,288 $ 10,834
Schedule of Effective Income Tax Rate Reconciliation	The (benefit) provision for income taxes for the years ended December 31, 2018 , 2017 and 2016 differs from the amount computed by applying the U.S. federal income tax rate of 21% to pretax income (loss) because of the effect of the following items (in thousands): Year Ended December 31, 2018 2017 2016 Tax (benefit) provision at U.S. federal income tax rate $ (16,093 ) $ 9,706 $ 5,175 State income taxes, net of federal income tax effect (307 ) 883 447 Federal, state and international deferred tax rate change 1,135 (5,119 ) — Transition tax (924 ) 5,323 — Effect of non-US operations (2,424 ) (2,228 ) (781 ) Nontaxable contingent liability fair value changes and goodwill impairment 11,254 237 3,578 Research and development credit (40 ) (38 ) (140 ) Change in valuation allowances 3,973 2,103 2,206 Prior year provision to return adjustment 942 (581 ) (137 ) Write-off of deferred taxes and tax receivables 431 70 193 Nondeductible expense and other 468 932 293 Tax reform global intangible low-taxed income 1,124 — — (Benefit) provision for income taxes $ (461 ) $ 11,288 $ 10,834
Schedule of Deferred Tax Assets and Liabilities	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of the Company's tax assets and liabilities for financial reporting purposes and the amounts used for income tax return reporting purposes. At December 31, 2018 and 2017 , the Company’s deferred tax assets and liabilities consisted of the following (in thousands): December 31, 2018 2017 Deferred tax assets: Inventory reserve $ 992 $ 700 Other reserves and allowances 3,470 370 Income tax basis in excess of financial statement basis in intangible assets 1,085 1,669 Deductible stock-based compensation 3,257 3,687 Net operating loss carryforward 18,836 13,669 Tax credit carryforwards 500 428 28,140 20,523 Valuation allowance (13,946 ) (10,711 ) Total deferred tax assets 14,194 9,812 Deferred tax liabilities: Prepaid & other expenses (284 ) (265 ) Fixed assets (4,826 ) (4,946 ) Intangible assets (16,067 ) (15,953 ) Total deferred tax liabilities (21,177 ) (21,164 ) Net deferred tax liability $ (6,983 ) $ (11,352 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	The computation of basic and diluted (loss) earnings per common share for the years ended December 31, 2018 , 2017 and 2016 , is as follows (in thousands, except per share amounts): Year Ended December 31, 2018 2017 2016 Numerator: Net (loss) income $ (76,171 ) $ 16,430 $ 3,949 Denominator: Denominator for basic (loss) earnings per share—weighted-average shares outstanding 52,230 53,851 53,607 Effect of dilutive securities: Employee stock options and restricted common shares — 1,093 728 Contingently issuable shares — — 125 Denominator for diluted (loss) earnings per share 52,230 54,944 54,460 Basic (loss) earnings per share $ (1.46 ) $ 0.31 $ 0.07 Diluted (loss) earnings per share $ (1.46 ) $ 0.30 $ 0.07

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	A summary of stock option activity for the years ended December 31, 2018 , 2017 and 2016 is as follows (in thousands, except per share amounts): Outstanding Options Weighted- Average Exercise Price Aggregate Intrinsic Value Outstanding at December 31, 2015 4,060 $ 8.37 $ 2,760 Granted 1,348 8.15 — Exercised (420 ) 6.27 4,455 Forfeited (227 ) 10.20 — Outstanding at December 31, 2016 4,761 8.40 8,655 Granted 568 10.73 — Exercised (428 ) 7.85 1,300 Forfeited (467 ) 10.39 539 Outstanding at December 31, 2017 4,434 8.57 9,340 Granted 912 8.20 — Exercised (662 ) 5.33 967 Forfeited (573 ) 11.21 — Outstanding at December 31, 2018 4,111 $ 8.53 $ 37 Options vested and exercisable at December 31, 2018 2,030 $ 8.68 $ 37
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following table summarizes information about all stock options outstanding for the Company as of December 31, 2018 (share amounts in thousands): Options Outstanding Options Vested Exercise Price Number Outstanding Weighted-Average Life Remaining (Years) Weighted- Average Exercise Price Number Exercisable Weighted- Average Exercise Price $0.00 - $4.36 27 0.15 $ 2.36 27 $ 2.36 $4.37 - $7.95 2,145 6.83 $ 7.19 924 $ 6.82 $7.96 - $11.97 1,621 6.68 $ 9.47 762 $ 9.25 $11.98 - $15.05 318 3.63 $ 13.28 318 $ 13.28 4,111 6.48 $ 8.53 2,030 $ 8.68 The weighted-average fair values and ranges of exercise prices for stock options granted during the years ended December 31, 2018 , 2017 and 2016 , which vest ratably over four or five years, are as follows (in thousands, except per share amounts): Options Granted Weighted-Average Fair Value Exercise Prices 2016 1,348 $ 3.38 $6.99 - $9.20 2017 568 $ 4.42 $9.32 - $11.47 2018 912 $ 3.37 $7.56 - $9.49
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The following assumptions were utilized in the Black-Scholes valuation model for options granted in 2018 , 2017 and 2016 : 2018 2017 2016 Dividend yield — — — Risk-free interest rate 2.76%-3.15% 1.98%-2.34% 1.53%-2.03% Expected life 6.4 years 6.5 years 6.5 years Volatility 35.0%-36.2% 36.0%-38.0% 38.0%-50.0%
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	A summary of restricted share activity is as follows (in thousands, except per share amounts): Outstanding Restricted Common Shares Weighted- Average Grant- Date Fair Value Nonvested Restricted Common shares at December 31, 2015 957 $ 7.66 Granted 559 $ 8.24 Vested and transferred to unrestricted common stock (429 ) $ 7.71 Forfeited (78 ) $ 8.04 Nonvested Restricted Common shares at December 31, 2016 1,009 $ 7.92 Granted 332 $ 11.00 Vested and transferred to unrestricted common stock (403 ) $ 8.28 Forfeited (166 ) $ 8.51 Nonvested Restricted Common shares at December 31, 2017 772 $ 8.98 Granted 84 $ 9.37 Vested and transferred to unrestricted common stock (341 ) $ 8.83 Forfeited (68 ) $ 9.29 Nonvested Restricted Common shares at December 31, 2018 447 $ 9.13 A summary of restricted share unit activity is as follows (in thousands, excepts per share amounts): Outstanding Restricted Share Units Weighted- Average Grant- Date Fair Value Nonvested Restricted Share Units at December 31, 2017 — $ — Granted 577 $ 7.74 Vested and transferred to unrestricted share units (16 ) $ 7.75 Forfeited (9 ) $ 7.75 Nonvested Restricted Share Units at December 31, 2018 552 $ 7.74
Schedule of Nonvested Performance-based Units Activity	Outstanding Weighted- Average Grant- Date Fair Value Nonvested Performance Share Units at December 31, 2016 — $ — Granted 152 $ 11.10 Forfeited (24 ) $ 11.10 Nonvested Performance Share Units at December 31, 2017 128 $ 11.10 Granted 187 $ 7.36 Forfeited (22 ) $ 11.10 Nonvested Performance Share Units at December 31, 2018 293 $ 8.72

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Flow, Supplemental Disclosures	Supplemental cash flow information is as follows (in thousands): Year Ended December 31, 2018 2017 2016 Cash paid for: Interest $ 7,149 $ 4,072 $ 4,338 Income taxes 5,810 9,838 5,845 $ 12,959 $ 13,910 $ 10,183 Noncash investing and financing activities: Buildings - Build to Suit Leases $ 48,428 $ — $ — Repurchases of common stock — 91 — Shares issued as payment of contingent consideration — 4,678 2,012 $ 48,428 $ 4,769 $ 2,012

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The table below presents financial information for the Company's reportable operating segments and Other for the fiscal years noted (in thousands): North America EMEA LATAM Other (2) Total Fiscal 2018: Revenue from third parties $ 777,426 $ 260,950 $ 83,175 $ — $ 1,121,551 Revenue from other segments 3,200 9,500 217 (12,917 ) — Total revenue 780,626 270,450 83,392 (12,917 ) 1,121,551 Adjusted EBITDA (1) 61,780 6,410 3,082 (43,372 ) 27,900 Fiscal 2017: Revenue from third parties 780,511 265,669 92,181 — 1,138,361 Revenue from other segments 5,469 13,444 1,693 (20,606 ) — Total revenue 785,980 279,113 93,874 (20,606 ) 1,138,361 Adjusted EBITDA (1) 74,230 15,242 4,278 (35,867 ) 57,883 Fiscal 2016: Revenue from third parties 736,140 267,168 91,094 — 1,094,402 Revenue from other segments 6,029 13,070 4,456 (23,555 ) — Total revenue 742,169 280,238 95,550 (23,555 ) 1,094,402 Adjusted EBITDA (1) 68,434 14,752 6,818 (31,392 ) 58,612 (1) Adjusted EBITDA, which represents income from operations with the addition of depreciation and amortization, stock-based compensation expense, income/expense related to changes in the fair value of contingent consideration liabilities, goodwill and intangible asset impairment charges, restructuring charges, senior leadership transition and other employee-related costs, business development realignment, professional fees related to ASC 606 implementation, executive search costs, restatement-related professional fees, other professional fees, obsolete retail inventory charges, and Czech currency impact on procurement margin is considered a non-GAAP financial measure under SEC regulations. Income from operations is the most directly comparable financial measure calculated in accordance with GAAP. The Company presents this measure as supplemental information to help investors better understand trends in its business results over time. The Company's management team uses Adjusted EBITDA to evaluate the performance of the business. Adjusted EBITDA is not equivalent to any measure of performance required to be reported under GAAP, nor should this data be considered an indicator of the Company's overall financial performance and liquidity. Moreover, the Adjusted EBITDA definition the Company uses may not be comparable to similarly titled measures reported by other companies. (2) Other consists of intersegment eliminations, shared service activities and unallocated corporate expenses. The table below presents total assets for the Company's reportable segments and Other as of December 31, 2018 and December 31, 2017 . December 31, 2018 2017 North America $ 399,288 $ 401,415 EMEA 160,322 171,086 LATAM 43,028 57,235 Other 20,038 19,902 Total Assets $ 622,676 $ 649,638
Schedule of Earnings Before Interest Tax Depreciation and Amortization Reconciliation		The table below reconciles Adjusted EBITDA and Income (loss) before income taxes in the Company's consolidated statement of operations (in thousands): Year Ended December 31, 2018 2017 2016 Adjusted EBITDA $ 27,900 $ 57,883 $ 58,612 Depreciation and amortization (12,988 ) (13,390 ) (17,916 ) Stock-based compensation expense (5,302 ) (6,820 ) (5,572 ) Change in fair value of contingent consideration — (677 ) (10,417 ) Goodwill impairment (46,319 ) — — Intangible and other asset impairments (18,121 ) — (70 ) Restructuring charges (6,031 ) — (5,615 ) Senior leadership transition and other employee-related costs (1,410 ) — — Business development realignment — (715 ) — Professional fees related to ASC 606 implementation (1,092 ) (829 ) — Executive search costs (235 ) (454 ) — Restatement-related professional fees (2,430 ) — — Other professional fees (507 ) — — Obsolete retail inventory (950 ) — — Czech currency impact on procurement margin — (860 ) — Total other expense (9,147 ) (6,420 ) (4,239 ) (Loss) income before income taxes $ (76,632 ) $ 27,718 $ 14,783

Description of the Business - N

Description of the Business - Narrative (Details)	12 Months Ended
	Dec. 31, 2018segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments	3

- Summary of Property and Equip

- Summary of Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2018
Computer equipment
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	3 years
Office Equipment
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	5 years
Office equipment and furniture
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	7 years
Minimum | Software, including internal-use software
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	1 year
Maximum | Software, including internal-use software
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	5 years

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Schedule of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 284,545	$ 262,161	$ 252,432
Other comprehensive (loss) income, net of tax	(5,080)	1,720	(7,147)
Ending Balance	183,091	284,545	262,161
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(19,229)	(20,949)	(13,802)
Other comprehensive (loss) income, net of tax	(5,080)	1,720
Ending Balance	$ (24,309)	$ (19,229)	$ (20,949)

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Narrative (Details)	Oct. 12, 2018	Jun. 01, 2017	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2018USD ($)segment	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 31, 2019USD ($)
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, disposals				$ 400,000
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit)						$ 900,000
Realized gain (loss) on foreign currency transactions						(1,100,000)	$ (1,400,000)	$ 600,000
ARS to USD Exchange Rate						37.70
Venezuela remeasurement charges						$ (4,100,000)
Number of segments | segment						3
Goodwill Impairment			$ 27,900,000			$ 46,319,000	0	0
Impairment of Intangible Assets, Finite-lived			13,800,000		$ 100,000	18,121,000	0	70,000
Interest and penalties on unrecognized tax benefits						23,000	0	0
Unrecognized tax benefits				0	0	0	0	0
Advertising expense						1,400,000	1,200,000	1,400,000
Retained earnings				124,442,000		48,905,000	124,442,000
Effect of Favorable Foreign Currency Impact						100,000
Amount Recognized in Gross Margin Due to Inflationary Accounting						400,000
Net cash provided by (used in) financing activities						(13,736,000)	(525,000)	4,435,000
Net cash provided by (used in) operating activities						$ 23,058,000	$ 11,698,000	$ 9,660,000
Minimum
Schedule of Significant Accounting Policies [Line Items]
Term on financing receivables						30 days
Vesting percentage						7.00%
Maximum
Schedule of Significant Accounting Policies [Line Items]
Term on financing receivables						90 days
Vesting percentage						8.00%
Internal Use Software
Schedule of Significant Accounting Policies [Line Items]
Finite-lived Intangible Assets Amortization Expense [Table Text Block]						6.1	5.4	9.2
Finite-lived intangible assets				$ 29,700,000		$ 25,400,000	$ 29,700,000
Internal Use Software | Minimum
Schedule of Significant Accounting Policies [Line Items]
Useful life of intangible assets						3 years
Internal Use Software | Maximum
Schedule of Significant Accounting Policies [Line Items]
Useful life of intangible assets						6 years
Customer lists
Schedule of Significant Accounting Policies [Line Items]
Useful life of intangible assets						14 years
Non-competition agreements
Schedule of Significant Accounting Policies [Line Items]
Useful life of intangible assets						4 years
Trade names
Schedule of Significant Accounting Policies [Line Items]
Useful life of intangible assets						13 years
Patents
Schedule of Significant Accounting Policies [Line Items]
Useful life of intangible assets						9 years
Office equipment and furniture
Schedule of Significant Accounting Policies [Line Items]
Useful life of property and equipment						7 years
ARS [Member]
Schedule of Significant Accounting Policies [Line Items]
Net Monetary Assets						$ 50,700,000
Performance Shares | Minimum
Schedule of Significant Accounting Policies [Line Items]
Vesting percentage	0.00%	0.00%
Performance Shares | Maximum
Schedule of Significant Accounting Policies [Line Items]
Vesting percentage	200.00%	200.00%
Accounting Standards Update 2016-15 [Member]
Schedule of Significant Accounting Policies [Line Items]
Net cash provided by (used in) financing activities							4,400,000	$ 800,000
Net cash provided by (used in) operating activities							4,400,000	800,000
Accounting Standards Update 2016-02 [Member]
Schedule of Significant Accounting Policies [Line Items]
Build to suit property plant and equipment, net						48,400,000
Financing obligation noncurrent						47,400,000
Common Stock | Series of Business Acquisitions
Schedule of Significant Accounting Policies [Line Items]
Repurchases of common stock						0	$ 91,000	$ 0
EMEA [Member]
Schedule of Significant Accounting Policies [Line Items]
Goodwill Impairment						(20,778,000)
Impairment of Intangible Assets, Finite-lived			13,200,000
EMEA [Member] | Trade names
Schedule of Significant Accounting Policies [Line Items]
Asset Impairment Charges					$ 100,000
LATAM SEF [Member]
Schedule of Significant Accounting Policies [Line Items]
Goodwill Impairment						(7,109,000)
Impairment of Intangible Assets, Finite-lived			600,000
EMEA [Member]
Schedule of Significant Accounting Policies [Line Items]
Goodwill Impairment			20,800,000			75,400,000
LATAM SEF [Member]
Schedule of Significant Accounting Policies [Line Items]
Goodwill Impairment			$ 7,100,000
North America
Schedule of Significant Accounting Policies [Line Items]
Goodwill Impairment						$ 18,400,000
Change in Accounting Method Accounted for as Change in Estimate [Member] | Internal Use Software
Schedule of Significant Accounting Policies [Line Items]
Useful life of property and equipment						4 years 6 months
Scenario, Forecast [Member] | Subsequent Event [Member] | Accounting Standards Update 2016-02 [Member] | Minimum
Schedule of Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset									$ 35,200,000
Operating lease, liability									35,200,000
Scenario, Forecast [Member] | Subsequent Event [Member] | Accounting Standards Update 2016-02 [Member] | Maximum
Schedule of Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset									47,900,000
Operating lease, liability									$ 47,900,000

Revenue Recognition - Condensed

Revenue Recognition - Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets:
Other non-current assets	$ 2,976	$ 1,636
Liabilities:
Deferred income taxes	8,178	12,043
Stockholders' equity:
Retained earnings	48,905	$ 124,442
Difference between Revenue Guidance in Effect before and after Topic 606
Assets:
Other non-current assets	(1,152)
Liabilities:
Deferred income taxes	(128)
Stockholders' equity:
Retained earnings	(1,024)
Calculated under Revenue Guidance in Effect before Topic 606
Assets:
Other non-current assets	1,824
Liabilities:
Deferred income taxes	8,050
Stockholders' equity:
Retained earnings	$ 47,881

Revenue Recognition - Condens_2

Revenue Recognition - Condensed Consolidated Statement of Operations (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, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating expenses:
Selling, general and administrative expenses										$ 239,124	$ 227,253	$ 209,524
Impairment of Intangible Assets, Finite-lived		$ 13,800							$ 100	18,121	0	70
Intangible and other asset impairments										18,121
(Loss) income from operations	$ (27,869)	(43,212)	$ 2,355	$ 1,241	$ 3,402	$ 11,585	$ 9,926	$ 9,225		(67,485)	34,138	19,022
(Loss) income before taxes										(76,632)	27,718	14,783
Provision (benefit) for income tax										$ (461)	$ 11,288	$ 10,834
Net (loss) income	$ (29,251)	$ (44,937)	$ (299)	$ (1,684)	$ (738)	$ 7,116	$ 4,374	$ 5,678
Basic earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.11		$ (1.46)	$ 0.31	$ 0.07
Diluted earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.10		$ (1.46)	$ 0.30	$ 0.07
Difference between Revenue Guidance in Effect before and after Topic 606
Operating expenses:
Selling, general and administrative expenses										$ 70
Intangible and other asset impairments										(1,274)
(Loss) income from operations										1,204
(Loss) income before taxes										1,204
Provision (benefit) for income tax										306
Net (loss) income										$ 898
Basic earnings (loss) per share (in USD per share)										$ 0.02
Diluted earnings (loss) per share (in USD per share)										$ 0.02
Calculated under Revenue Guidance in Effect before Topic 606
Operating expenses:
Selling, general and administrative expenses										$ 239,194
Intangible and other asset impairments										16,847
(Loss) income from operations										(66,281)
(Loss) income before taxes										(75,428)
Provision (benefit) for income tax										(155)
Net (loss) income										$ (75,273)
Basic earnings (loss) per share (in USD per share)										$ (1.44)
Diluted earnings (loss) per share (in USD per share)										$ (1.44)

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings	$ 48,905	$ 124,442
Deferred revenue, current	17,614	17,620
Right to payment	11,900
Revenue recognized	11,400
Capitalized contract cost, net	1,200
Capitalized contract cost, amortization	400
Capitalized contract cost, impairment loss	$ 1,300
Accounting Standards Update 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings		$ 500

Acquisitions - Schedule of Pote

Acquisitions - Schedule of Potential Contingent Consideration (Details)	12 Months Ended
	Dec. 31, 2017
Business Acquisition, Contingent Consideration [Line Items]
Estimated probability for contingent consideration payout	100.00%

Acquisitions - Schedule of Equi

Acquisitions - Schedule of Equity Issued for Acquisition (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Shares issued as payments for acquisitions		$ 4,678	$ 2,012
Series of Business Acquisitions | Common Stock
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Payments of contingent consideration (in shares)	0	441	244
Shares issued as payment of contingent consideration	$ 0	$ 4,678	$ 2,012
Payments of contingent consideration (in USD per share)	$ 0	$ 10.61	$ 8.25

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2017
Business Acquisition [Line Items]
Contingent consideration				$ (17,700)
Decrease in contingent consideration liability	$ 0	$ (677)	$ (10,417)

Goodwill - Schedule of Goodwill

Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill Impairment	$ (27,900)		$ (46,319)	$ 0	$ 0
Goodwill [Roll Forward]
Balance			199,946	202,700
Foreign exchange impact		$ (2,754)	(1,469)
Balance		199,946	152,158	199,946	202,700
North America
Goodwill [Line Items]
Goodwill Impairment			18,432
Goodwill [Roll Forward]
Balance			170,685	170,757
Foreign exchange impact			(95)	(72)
Balance		170,685	152,158	170,685	170,757
EMEA [Member]
Goodwill [Line Items]
Goodwill Impairment			20,778
Goodwill [Roll Forward]
Balance			21,815	23,264
Foreign exchange impact			(1,037)	(1,449)
Balance		21,815	0	21,815	23,264
LATAM SEF [Member]
Goodwill [Line Items]
Goodwill Impairment			7,109
Goodwill [Roll Forward]
Balance			7,447	8,680
Foreign exchange impact			(338)	(1,233)
Balance		$ 7,447	$ 0	$ 7,447	$ 8,680

Goodwill - Narrative (Details)

Goodwill - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Foreign exchange impact		$ (2,754)	$ (1,469)
Goodwill Impairment	$ 27,900		46,319	$ 0	$ 0
EMEA [Member]
Goodwill [Line Items]
Goodwill Impairment	20,800		75,400
LATAM SEF [Member]
Goodwill [Line Items]
Goodwill Impairment	$ 7,100
North America
Goodwill [Line Items]
Goodwill Impairment			$ 18,400

Other Intangible Assets - Sched

Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived	$ 13,800	$ 100	$ 18,121	$ 0	$ 70
Gross intangible assets			77,309	78,146
Less accumulated amortization and impairment			(67,481)	(50,583)
Intangible assets, net			9,828	27,563
Customer lists
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets			$ 73,792	74,615
Weighted Average Life			14 years 5 months
Non-competition agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets			$ 950	964
Weighted Average Life			4 years 1 month
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets			$ 2,510	2,510
Weighted Average Life			13 years 4 months
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets			$ 57	$ 57
Weighted Average Life			9 years

Other Intangible Assets - Sch_2

Other Intangible Assets - Schedule of Future Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
2018	$ 2,122
2019	2,021
2020	1,783
2021	1,407
2022	961
Thereafter	1,534
Intangible assets, net	$ 9,828	$ 27,563

Other Intangible Assets - Narra

Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			$ 3,600	$ 5,000	$ 5,500
Impairment of Intangible Assets, Finite-lived	$ 13,800	$ 100	$ 18,121	0	$ 70
LATAM SEF [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived	600
EMEA [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived	$ 13,200
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets			14 years
Amortization of intangible assets			$ 64,500	47,800
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets			13 years
Amortization of intangible assets			$ 2,000	$ 1,800
Patents
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets			9 years

Restructuring Activities and _3

Restructuring Activities and Other Charges - Schedule of Restructuring Charges (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 6,031
Restructuring Reserve [Roll Forward]
Balance at December 31	0
Cash payments	(4,377)
Balance at December 31	1,349
Restructuring Reserve, Translation and Other Adjustment	(305)
Employee Severance and Related Benefits
Restructuring Reserve [Roll Forward]
Balance at December 31	0
Cash payments	(2,594)
Balance at December 31	358
Restructuring Reserve, Translation and Other Adjustment	(305)
Lease and Contract Termination Costs
Restructuring Reserve [Roll Forward]
Balance at December 31	0
Cash payments	(226)
Balance at December 31	286
Restructuring Reserve, Translation and Other Adjustment	0
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31	0
Cash payments	(1,557)
Balance at December 31	705
Restructuring Reserve, Translation and Other Adjustment	0
North America
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	882
EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	2,496
LATAM SEF [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	368
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	2,285
2015 Restructuring plan [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31	484
Cash payments	(47)
Non-cash settlements / adjustments	49
Balance at December 31	486
2015 Restructuring plan [Member] | Employee Severance and Related Benefits
Restructuring Reserve [Roll Forward]
Balance at December 31	484
Cash payments	(47)
Balance at December 31	486
2015 Restructuring plan [Member] | Lease and Contract Termination Costs
Restructuring Reserve [Roll Forward]
Balance at December 31	0
Cash payments	0
Non-cash settlements / adjustments	0
Balance at December 31	0
2015 Restructuring plan [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31	0
Cash payments	0
Non-cash settlements / adjustments	0
Balance at December 31	$ 0

Restructuring Activities and _4

Restructuring Activities and Other Charges - Narrative (Details) $ in Thousands	5 Months Ended	12 Months Ended			37 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2018USD ($)employee	Dec. 14, 2015USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 1,349	$ 1,349	$ 0		$ 1,349
Expected number of positions to eliminate (in employee) | employee					100
Expected restructuring cost						$ 6,700
Restructuring charges		(6,031)	0	$ (5,615)
Cash payments		(4,377)
Employee Severance and Related Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	358	358	0		$ 358
Expected restructuring cost						5,600
Restructuring charges		(3,257)
Cash payments		(2,594)
Lease and Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	286	286	0		286
Restructuring charges		(512)
Cash payments		(226)
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	705	705	$ 0		$ 705
Restructuring charges		(2,262)
Cash payments		$ (1,557)
Maximum | Lease and Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost						$ 1,100
Restructuring Plan, 2018 [Member]
Restructuring Cost and Reserve [Line Items]
Non-cash settlements / adjustments	400
Restructuring Plan, 2018 [Member] | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(20,000)
Restructuring Plan, 2018 [Member] | Minimum | Employee Severance and Related Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(12,000)
Restructuring Plan, 2018 [Member] | Minimum | Lease and Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(8,000)
Restructuring Plan, 2018 [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(25,000)
Restructuring Plan, 2018 [Member] | Maximum | Employee Severance and Related Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(15,000)
Restructuring Plan, 2018 [Member] | Maximum | Lease and Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (10,000)

Property and Equipment - Schedu

Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 155,562	$ 99,082
Less accumulated depreciation	(72,629)	(62,368)
Property and equipment, net	82,933	36,714
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	12,258	10,985
Software, including internal-use software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	82,426	78,410
Office equipment and furniture
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,315	6,111
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	49,169	0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,394	$ 3,576

Property and Equipment - Narrat

Property and Equipment - Narrative (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, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Oct. 01, 2016
Property, Plant and Equipment [Line Items]
Basic earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.11		$ (1.46)	$ 0.31	$ 0.07
Diluted earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.10		$ (1.46)	$ 0.30	$ 0.07
Depreciation										$ 9,400	$ 8,400	$ 12,400
Property, plant, and equipment, net	$ 82,933				$ 36,714					82,933	36,714
Net (loss) income	$ (29,251)	$ (44,937)	$ (299)	$ (1,684)	(738)	$ 7,116	$ 4,374	$ 5,678
Impairment of Intangible Assets, Finite-lived		13,800							$ 100	$ 18,121	$ 0	70
Property, plant and equipment, disposals					$ 400
Internal Use Software [Member]
Property, Plant and Equipment [Line Items]
Basic earnings (loss) per share (in USD per share)										$ 0.015
Diluted earnings (loss) per share (in USD per share)										$ 0.015
Property, plant, and equipment, net													$ 20,800
Change in Accounting Method Accounted for as Change in Estimate [Member] | Internal Use Software [Member]
Property, Plant and Equipment [Line Items]
Depreciation												1,400
Useful life of property and equipment										4 years 6 months
Net (loss) income												$ 800
Income (loss) from continuing operations, per basic and diluted share												$ 0.02
Legacy ERP System [Member]
Property, Plant and Equipment [Line Items]
Impairment of Intangible Assets, Finite-lived		$ 3,000

Revolving Credit Facility - Nar

Revolving Credit Facility - Narrative (Details)	Feb. 22, 2016	Aug. 02, 2010USD ($)	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Line of Credit Facility [Line Items]
Line of Credit Facility, Expiration Date					Sep. 25, 2019
Long-term Line of Credit, Noncurrent					$ 0	$ 128,398,000
Line of Credit, Current					142,736,000	0
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums					$ 700,000	$ 400,000
August 2010 Credit Facility Agreement
Line of Credit Facility [Line Items]
Ratio of indebtedness to net capital					3.5
Maximum leverage ratio					4.5
Debt instrument converstion ratio					5
Minimum leverage ratio					4
Revolving Credit Facility | Credit Agreement Due 2019 [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity on line of credit		$ 175,000,000
Revolving Credit Facility | August 2010 Credit Facility Agreement
Line of Credit Facility [Line Items]
Increase to borrowing capacity		$ 50,000,000
Unused capacity					$ 6,000,000
Borrowings to be drawn					$ 700,000
Maximum leverage ratio		3
Minimum interest coverage ratio		5
Revolving Credit Facility | Credit Agreement Due 2020 [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity on line of credit		$ 160,000,000
Base Rate
Line of Credit Facility [Line Items]
Additional basis on borrowings	110.00%
Minimum
Line of Credit Facility [Line Items]
Additional basis on borrowings					5000.00%
Minimum | Eurodollar
Line of Credit Facility [Line Items]
Additional basis on borrowings					15000.00%
Minimum | Eurodollar | Revolving Credit Facility | August 2010 Credit Facility Agreement
Line of Credit Facility [Line Items]
Additional basis on borrowings		1.25%
Minimum | Base Rate | Revolving Credit Facility | August 2010 Credit Facility Agreement
Line of Credit Facility [Line Items]
Additional basis on borrowings		0.25%
Maximum
Line of Credit Facility [Line Items]
Additional basis on borrowings					22500.00%
Maximum | Eurodollar
Line of Credit Facility [Line Items]
Additional basis on borrowings					32500.00%
Maximum | Eurodollar | Revolving Credit Facility | August 2010 Credit Facility Agreement
Line of Credit Facility [Line Items]
Additional basis on borrowings		2.50%
Maximum | Base Rate | Revolving Credit Facility | August 2010 Credit Facility Agreement
Line of Credit Facility [Line Items]
Additional basis on borrowings		1.50%
International [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity on line of credit					$ 5,000,000
Unused capacity					$ 4,500,000
Subsequent Event [Member] | August 2010 Credit Facility Agreement
Line of Credit Facility [Line Items]
Ratio of indebtedness to net capital				3
Maximum leverage ratio			3	4.75
Debt instrument converstion ratio				5
Minimum leverage ratio			5	3.50

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Future Lease Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Long-term Purchase Commitment [Line Items]
2018	$ 6,383
2019	5,017
2020	4,422
2021	3,245
2022	2,068
Thereafter	1,966
Total minimum lease payments	23,101
Portland and Prague
Long-term Purchase Commitment [Line Items]
2018	2,400
2019	3,900
2020	4,100
2021	4,300
Thereafter	$ 3,800

Commitments and Contingencies_2

Commitments and Contingencies - Narrative (Details) € in Millions, $ in Millions

1 Months Ended

12 Months Ended

Jan. 31, 2014USD ($)

Jan. 31, 2014EUR (€)

Dec. 31, 2013USD ($)

Dec. 31, 2013EUR (€)

Nov. 30, 2013USD ($)

Nov. 30, 2013EUR (€)

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 31, 2016USD ($)

Dec. 31, 2015USD ($)

Dec. 31, 2015EUR (€)

Feb. 28, 2014USD ($)

Feb. 28, 2014EUR (€)

Loss Contingencies [Line Items]

Rent expense

$ 10.5

$ 9.9

$ 10.6

Wrongful Termination Lawsuit - Productions Graphics

Loss Contingencies [Line Items]

Damages sought

$ 1

€ 0.7

$ 1

€ 0.7

Contingent consideration

$ 9.4

€ 7.1

Fixed consideration

$ 8

€ 5.8

Maximum consideration

$ 37.6

€ 34.5

Employment Arbitration Claim

Loss Contingencies [Line Items]

Damages sought

$ 0.7

€ 0.6

Portland

Loss Contingencies [Line Items]

Build to suit property plant and equipment, net

8.8

Financing obligation noncurrent

8.9

Financing Obligation, Expense

0.5

Financing Obligation, General and Administrative Expense

0.1

Financing Obligation, Interest Expense

0.3

Financing Obligation, Depreciation and Amortization

0.1

Prague

Loss Contingencies [Line Items]

Build to suit property plant and equipment, net

39.6

Financing obligation noncurrent

38.5

Financing Obligation, Expense

0.7

Financing Obligation, General and Administrative Expense

0.5

Financing Obligation, Interest Expense

0.1

Financing Obligation, Depreciation and Amortization

$ 0.1

Income Taxes - Components of In

Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Foreign	$ (31,600)	$ 14,000	$ 13,100
Current
Federal	(781)	3,076	477
State	180	62	159
Foreign	4,581	4,078	5,972
Total current income tax expense	3,980	7,216	6,608
Deferred
Federal	(3,250)	1,959	4,165
State	(62)	1,575	414
Foreign	(1,129)	538	(353)
Total deferred income tax expense	(4,441)	4,072	4,226
Prior year provision to return adjustment	$ (461)	$ 11,288	$ 10,834

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax expense (benefit) at U.S. federal income tax rate	$ (16,093)	$ 9,706	$ 5,175
State income taxes, net of federal income tax effect	(307)	883	447
Federal and state deferred tax rate change	1,135	(5,119)	0
Transition tax	(924)	5,323	0
Effect of non-US operations	(2,424)	(2,228)	(781)
Nontaxable contingent liability fair value changes and goodwill impairment	11,254	237	3,578
Research and development credit	(40)	(38)	(140)
Change in valuation allowances	3,973	2,103	2,206
Prior year provision to return adjustment	942	(581)	(137)
Write-off of deferred taxes and tax receivables	431	70	193
Change in valuation allowances	468	932	293
Effective Income Tax Rate Reconciliation, Tax Reform Global Intangible Low-taxed Income	1,124	0	0
Prior year provision to return adjustment	$ (461)	$ 11,288	$ 10,834

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit)	$ 900
Deferred tax assets:
Inventory reserve	992	$ 700
Other reserves and allowances	3,470	370
Income tax basis in excess of financial statement basis in intangible assets	1,085	1,669
Deductible stock-based compensation	3,257	3,687
Net operating loss carryforward	18,836	13,669
Tax credit carryforwards	500	428
Total deferred tax assets, gross	28,140	20,523
Total deferred tax assets	(13,946)	(10,711)
Total deferred tax assets	14,194	9,812
Deferred tax liabilities:
Prepaid & other expenses	(284)	(265)
Fixed assets	(4,826)	(4,946)
Intangible assets	(16,067)	(15,953)
Total deferred tax liabilities	(21,177)	(21,164)
Net deferred tax liability (as restated)	$ (6,983)	$ (11,352)

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Federal tax rate	21.00%	35.00%
Increase in valuation allowance	$ 3,200	$ 2,400
Limitation on operating loss carryforward	200
Undistributed earnings for foreign operations	2,000
Uncertain tax positions, reserve	522	499	$ 499
Uncertain tax positions, reversal	200
Income (loss) from foreign operations	(31,600)	$ 14,000	$ 13,100
Credit to income tax provision	$ (900)
Grant Of Income Tax Exemption Period	20 years
Benefit of tax exemptions on diluted earnings per share	$ 0.04
Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating Loss Carryfowards Acquired In Business Combination	$ 600
Operating loss carryforwards	16,300
Operating loss carryforward, not subject to expiration	15,700
State and Local Jurisdiction
Income Tax Disclosure [Line Items]
Operating loss carryforwards	1,300
Operating loss carryforward, subject to expiration	1,000
Argentina Tax Authority [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	300
France tax authority | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	7,900
Italy tax authority | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	400
Chile tax authority | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	1,000
State Administration of Taxation, China [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	500
Czech Republic Tax Authority [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	1,000
Germany Tax Authority [Member] [Domain] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	900
National Tax Agency, Japan [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	400
Mexican Tax Authority [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	$ 300

Income Taxes Uncertain Tax Posi

Income Taxes Uncertain Tax Positions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Balance at December 31, 2016	$ 499,000	$ 499,000
Additions based on tax positions related to the current year	0
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0
Interest and penalties on unrecognized tax benefits	23,000	0	$ 0
Balance at December 31, 2017	$ 522,000	$ 499,000	$ 499,000

Fair Value Measurement - Rollfo

Fair Value Measurement - Rollforward of Unobservable Reconciliations (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value of contingent consideration		$ 0	$ 677	$ 10,417
Foreign exchange impact	$ (2,754)	$ (1,469)

Fair Value Measurement - Narrat

Fair Value Measurement - Narrative (Details)	12 Months Ended
	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated probability for contingent consideration payout	100.00%

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share (Details) - 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
Numerator:
Net (loss) income	$ (29,251)	$ (44,937)	$ (299)	$ (1,684)	$ (738)	$ 7,116	$ 4,374	$ 5,678
Denominator:
Denominator for basic earnings per share—weighted-average shares outstanding (in shares)									52,230	53,851	53,607
Effect of dilutive securities:
Employee stock options and restricted common shares (in shares)									0	1,093	728
Contingently issuable shares (in shares)									0	0	125
Denominator for dilutive earnings per share (in shares)									52,230	54,944	54,460
Basic earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.11	$ (1.46)	$ 0.31	$ 0.07
Diluted earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.10	$ (1.46)	$ 0.30	$ 0.07

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Shares excluded from EPS (in shares)	1.1	3.8

Share Repurchase Program - Narr

Share Repurchase Program - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	May 04, 2017	Feb. 12, 2015
Equity [Abstract]
Authorized share repurchase			$ 30,000,000	$ 20,000,000
Acquisition of treasury shares (in shares)	2,667,732	1,121,928
Value of shares repurchased	$ 25,598,000	$ 10,976,000
Cost per share acquired (in USD per share)	$ 9.60	$ 9.78

Stock-Based Compensation Plan_2

Stock-Based Compensation Plans - Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at December 31 (in shares)	4,434	4,761	4,060
Granted (in shares)	912	568	1,348
Exercised (in shares)	(662)	(428)	(420)
Forfeitures (in shares)	(573)	(467)	(227)
Outstanding at December 31 (in shares)	4,111	4,434	4,761
Options vested (in shares)	2,030	2,500	2,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at December 31 (in USD per share)	$ 8.57	$ 8.40	$ 8.37
Granted (in USD per share)	8.20	10.73	8.15
Exercised (in USD per share)	5.33	7.85	6.27
Forfeited (in USD per share)	11.21	10.39	10.20
Outstanding at December 31 (in USD per share)	8.53	$ 8.57	$ 8.40
Options vested (in USD per share)	$ 8.68
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding at December 31	$ 9,340	$ 8,655	$ 2,760
Granted	0	0	0
Exercised	967	1,300	4,455
Forfeited	0	539	0
Outstanding at December 31	37	$ 9,340	$ 8,655
Options vested	$ 37

Stock-Based Compensation Plan_3

Stock-Based Compensation Plans - Weighted Average Fair Value of Options Granted (Details) - $ / shares shares 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]
Granted (in shares)	912	568	1,348
Grant date fair value (USD per share)	$ 3.37	$ 4.42	$ 3.38
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	8.20	10.73	8.15
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price (USD per share)	9.49	11.47	9.20
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price (USD per share)	$ 7.56	$ 9.32	$ 6.99

Stock-Based Compensation Plan_4

Stock-Based Compensation Plans - Option Assumptions (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Expected life	6 years 5 months	6 years 6 months	6 years 6 months
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	3.15%	2.34%	2.03%
Volatility	36.00%	38.00%	50.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.76%	1.98%	1.53%
Volatility	35.00%	36.00%	38.00%

Stock-Based Compensation Plan_5

Stock-Based Compensation Plans - Schedule of Exercise Price Ranges (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	4,111	4,434	4,761	4,060
Options Outstanding - Weighted-Average Life	6 years 5 months 23 days
Outstanding outstanding (in USD per share)	$ 8.53	$ 8.57	$ 8.40	$ 8.37
Options vested (in shares)	2,030	2,500	2,500
Options vested (in USD per share)	$ 8.68
$0.00 - $4.36
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	27
Options Outstanding - Weighted-Average Life	1 month 24 days
Outstanding outstanding (in USD per share)	$ 2.36
Options vested (in shares)	27
Options vested (in USD per share)	$ 2.36
Exercise price, minimum (USD per share)	0
Exercise price, maximum (USD per share)	$ 4.36
$4.37 - $7.95
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	2,145
Options Outstanding - Weighted-Average Life	6 years 9 months 31 days
Outstanding outstanding (in USD per share)	$ 7.19
Options vested (in shares)	924
Options vested (in USD per share)	$ 6.82
Exercise price, minimum (USD per share)	4.37
Exercise price, maximum (USD per share)	$ 7.95
$7.96 - $11.97
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	1,621
Options Outstanding - Weighted-Average Life	6 years 7 months 36 days
Outstanding outstanding (in USD per share)	$ 9.47
Options vested (in shares)	762
Options vested (in USD per share)	$ 9.25
Exercise price, minimum (USD per share)	7.96
Exercise price, maximum (USD per share)	$ 11.97
$11.98 - $15.05
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	318
Options Outstanding - Weighted-Average Life	3 years 7 months 18 days
Outstanding outstanding (in USD per share)	$ 13.28
Options vested (in shares)	318
Options vested (in USD per share)	$ 13.28
Exercise price, minimum (USD per share)	11.98
Exercise price, maximum (USD per share)	$ 15.05

Stock-Based Compensation Plan_6

Stock-Based Compensation Plans - Restricted Stock Awards and Performance-Based Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested shares at December 31 (in shares)	772,000	1,009,000	957,000
Granted (in shares)	84,000	332,000	559,000
Vested and transferred to unrestricted common stock (in shares)	(341,000)	(403,000)	(429,000)
Forfeited (in shares)	(68,000)	(166,000)	(78,000)
Nonvested shares at December 31 (in shares)	447,000	772,000	1,009,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Nonvested shares at December 31 (USD per share)	$ 8.98	$ 7.92	$ 7.66
Granted (USD per share)	9.37	11	8.24
Vested and transferred to unrestricted common stock (USD per share)	8.83	8.28	7.71
Forfeited (USD per share)	9.29	8.51	8.04
Nonvested shares at December 31 (USD per share)	$ 9.13	$ 8.98	$ 7.92
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	$ (0.4)	$ 0.4
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested shares at December 31 (in shares)	128,234	0
Granted (in shares)	186,784	151,822
Forfeited (in shares)	(21,731)	(23,588)
Nonvested shares at December 31 (in shares)	293,287	128,234	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Nonvested shares at December 31 (USD per share)	$ 11.10	$ 0
Granted (USD per share)	7.36	11.10
Forfeited (USD per share)	11.10	11.10
Nonvested shares at December 31 (USD per share)	$ 8.72	$ 11.10	$ 0
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	7.00%
Minimum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Minimum | Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	0
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	8.00%
Maximum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Maximum | Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	586,574

Stock-Based Compensation Plan_7

Stock-Based Compensation Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 5,302	$ 6,820	$ 5,572
Additional stock-based compensation				$ 900
Term of award			6 years 5 months	6 years 6 months	6 years 6 months
Options Outstanding - Weighted-Average Life			6 years 5 months 23 days
Options vested (in shares)			2,030,000	2,500,000	2,500,000
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			7.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			8.00%
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 2,500	$ 2,900	$ 2,300
Term of award			10 years
Weighted average remaining contractual life, vested			6 years 5 months 23 days
Weighted average remaining contractual life, exercisable			4 years 7 months 11 days
Share price (USD per share)			$ 3.74	$ 10.03	$ 9.98
Unrecognized stock-based compensation on options			$ 4,900	$ 5,000	$ 7,400
Period for recognition of compensation expense			2 years 9 months	2 years 5 months	3 years 7 months
Stock Option | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 2,300	$ 3,500	$ 3,300
Unrecognized stock-based compensation on options			$ 3,000	$ 5,100	$ 7,600
Period for recognition of compensation expense			2 years 2 months	2 years 6 months	2 years 7 months
Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 700
Unrecognized stock-based compensation on options				$ 3,500
Period for recognition of compensation expense			2 years 12 months
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense			$ (400)	$ 400
Phantom Share Units (PSUs) [Member] | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage			0.00%
Common Stock, Capital Shares Reserved for Future Issuance			0
Phantom Share Units (PSUs) [Member] | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage			200.00%
Common Stock, Capital Shares Reserved for Future Issuance			586,574
2006 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	2,900,000	1,035,000
Additional shares authorized (in shares)						10,750,000	7,850,000
2006 Stock Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)		10,750,000
2006 Stock Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)		11,785,000

Stock-Based Compensation Plan_8

Stock-Based Compensation Plans - Restricted Share Units (Details) - Restricted Stock Units (RSUs) [Member] shares in Thousands	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]
Nonvested shares at December 31 (in shares) | shares	0
Granted (in shares) | shares	577
Vested and transferred to unrestricted common stock (in shares) | shares	(16)
Forfeited (in shares) | shares	(9)
Nonvested shares at December 31 (in shares) | shares	552
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Nonvested shares at December 31 (USD per share) | $ / shares	$ 0
Granted (USD per share) | $ / shares	7.74
Vested and transferred to unrestricted common stock (USD per share) | $ / shares	7.75
Forfeited (USD per share) | $ / shares	7.75
Nonvested shares at December 31 (USD per share) | $ / shares	$ 7.74

Benefit Plans (Details Textual)

Benefit Plans (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Required period of service	30 days
Contribution to 401(k)	$ 0	$ 1	$ 1

Related Party Transactions - Na

Related Party Transactions - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Arthur J.Gallagher & Co
Related Party Transaction [Line Items]
Print services	$ 1.6	$ 1.9	$ 1.9
Insurance and risk management services	(0.1)	0.1	$ 0.2
Related party receivable	0.3	0.2
Enova Inc. [Member]
Related Party Transaction [Line Items]
Print services	10.1	0.1
Related party receivable	$ 2	$ 0.1

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noncash or Part Noncash Acquisitions [Line Items]
Interest	$ 7,149	$ 4,072	$ 4,338
Income taxes	5,810	9,838	5,845
Total interest and income taxes paid	12,959	13,910	10,183
Series of Business Acquisitions | Common Stock
Noncash or Part Noncash Acquisitions [Line Items]
Buildings - Build to Suit Leases	48,428	0	0
Repurchases of common stock	0	91	0
Shares issued as payment of contingent consideration	0	4,678	2,012
Total shares issued for acquisition and contingent consideration	$ 48,428	$ 4,769	$ 2,012

Business Segments - Revenue by

Business Segments - Revenue by Geographic Area (Details) - 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 from third parties									$ 1,121,551	$ 1,138,361	$ 1,094,402
Revenue from other segments									0	0	0
Total revenue	$ 294,195	$ 270,850	$ 281,967	$ 274,539	$ 305,367	$ 288,523	$ 280,066	$ 264,405	1,121,551	1,138,361	1,094,402
Adjusted EBITDA									27,900	57,883	58,612
Total assets	622,676				649,638				622,676	649,638
North America
Segment Reporting Information [Line Items]
Revenue from third parties									777,426	780,511	736,140
Revenue from other segments									3,200	5,469	6,029
Total revenue									780,626	785,980	742,169
Adjusted EBITDA									61,780	74,230	68,434
EMEA [Member]
Segment Reporting Information [Line Items]
Revenue from third parties									260,950	265,669	267,168
Revenue from other segments									9,500	13,444	13,070
Total revenue									270,450	279,113	280,238
Adjusted EBITDA									6,410	15,242	14,752
Total assets	160,322				171,086				160,322	171,086
LATAM SEF [Member]
Segment Reporting Information [Line Items]
Revenue from third parties									83,175	92,181	91,094
Revenue from other segments									217	1,693	4,456
Total revenue									83,392	93,874	95,550
Adjusted EBITDA									3,082	4,278	6,818
Total assets	$ 43,028				$ 57,235				43,028	57,235
Other (2)
Segment Reporting Information [Line Items]
Revenue from third parties									0	0	0
Revenue from other segments									(12,917)	(20,606)	(23,555)
Total revenue									(12,917)	(20,606)	(23,555)
Adjusted EBITDA									$ (43,372)	$ (35,867)	$ (31,392)

Business Segments - EBITDA and

Business Segments - EBITDA and Adjusted EBITDA (Details) - 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, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net (loss) income	$ (29,251)	$ (44,937)	$ (299)	$ (1,684)	$ (738)	$ 7,116	$ 4,374	$ 5,678
Provision (benefit) for income tax										$ (461)	$ 11,288	$ 10,834
Depreciation, Depletion and Amortization, Nonproduction										(12,988)	(13,390)	(17,916)
Stock-based compensation										(5,302)	(6,820)	(5,572)
Change in fair value of contingent consideration liability										0	(677)	(10,417)
Inventory Write-down										(950)	0	0
Professional fees related to ASC 606										(1,092)	(829)	0
Goodwill impairment charge		(27,900)								(46,319)	0	0
Impairment of Intangible Assets (Excluding Goodwill)										(18,121)
Intangible asset impairment charges		$ (13,800)							$ (100)	(18,121)	0	(70)
Restructuring charges										(6,031)	0	(5,615)
Senior leadership transition and other employee-related costs										(1,410)	0	0
Business Development										0	715	0
Secured asset reserve										$ (433)	$ 0	$ 0
Weighted Average Number of Shares Outstanding, Diluted										52,230	54,944	54,460
Professional fees related to ASC 606 implementation										$ 507	$ 0	$ 0
Executive Succession Search Costs										(235)	(454)	0
professional fees related to restatement										(2,430)	0	0
Czech Koruna Appreciation Impact on Gross Profit										0	(860)	0
CEO search costs										9,147	6,420	4,239
Income (loss) before income taxes										(76,632)	27,718	14,783
Interest income										(218)	(97)	(86)
Interest expense										(7,749)	(4,729)	(4,171)
Other Nonoperating Income (Expense)										1,616	1,788	154
Adjusted EBITDA										27,900	57,883	58,612
Retained Earnings
Segment Reporting Information [Line Items]
Net (loss) income										$ (76,171)	$ 16,430	$ 3,949

Business Segments - Narrative (

Business Segments - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)segment	Dec. 31, 2017USD ($)
Segment Reporting [Abstract]
Number of segments | segment	3
Segment Reporting Information [Line Items]
Property and equipment, net	$ 82,933	$ 36,714
United States
Segment Reporting Information [Line Items]
Property and equipment, net	31,100	21,800
International
Segment Reporting Information [Line Items]
Property and equipment, net	$ 14,900	$ 51,800

Business Segments - Assets by G

Business Segments - Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Property, plant, and equipment, net	$ 82,933	$ 36,714
Total assets	622,676	649,638
United States
Segment Reporting Information [Line Items]
Property, plant, and equipment, net	31,100	21,800
North America
Segment Reporting Information [Line Items]
Total assets	399,288	401,415
International
Segment Reporting Information [Line Items]
Property, plant, and equipment, net	14,900	51,800
Other Geographical Region
Segment Reporting Information [Line Items]
Total assets	20,038	19,902
EMEA [Member]
Segment Reporting Information [Line Items]
Total assets	160,322	171,086
LATAM SEF [Member]
Segment Reporting Information [Line Items]
Total assets	$ 43,028	$ 57,235

Quarterly Financial Data (Una_2

Quarterly Financial Data (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]
Revenues	$ 294,195	$ 270,850	$ 281,967	$ 274,539	$ 305,367	$ 288,523	$ 280,066	$ 264,405	$ 1,121,551	$ 1,138,361	$ 1,094,402
Gross Profit	60,118	64,042	64,871	66,067	68,787	71,921	70,046	64,704	255,098	275,458	262,564
(Loss) income from operations	(27,869)	(43,212)	2,355	1,241	3,402	11,585	9,926	9,225	$ (67,485)	$ 34,138	$ 19,022
Net Income (Loss) Attributable to Parent	$ (29,251)	$ (44,937)	$ (299)	$ (1,684)	$ (738)	$ 7,116	$ 4,374	$ 5,678
Basic earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.11	$ (1.46)	$ 0.31	$ 0.07
Diluted earnings (loss) per share (in USD per share)	$ (0.56)	$ (0.87)	$ (0.01)	$ (0.03)	$ (0.01)	$ 0.13	$ 0.08	$ 0.10	$ (1.46)	$ 0.30	$ 0.07

SCHEDULE II-VALUATION AND QUA_2

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 3,534	$ 2,622	$ 1,231
Charged to Expense	3,601	454	2,171
(Uncollectible Accounts Written Off, Net of Recoveries)	2,255	(457)	(780)
Balance at End of Period	$ 4,880	$ 3,534	$ 2,622