Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Presentation of Interim Financial Statements The accompanying unaudited consolidated financial statements of InnerWorkings, Inc. and subsidiaries (the “Company”) included herein have been prepared to conform to the rules and regulations of the Securities and Exchange Commission (“SEC”) and accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments considered necessary for a fair presentation of the accompanying unaudited financial statements have been included, and all adjustments are of a normal and recurring nature. The operating results for the three months ended March 31, 2016 are not necessarily indicative of the results to be expected for the full year ending December 31, 2016 . These condensed interim consolidated financial statements and notes should be read in conjunction with the Company’s Consolidated Financial Statements and Notes thereto as of and for the year ended December 31, 2015 included in the Company’s Annual Report on Form 10-K filed with the SEC on March 10, 2016. 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 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. The Company is organized and managed as two business segments, North America and International, and is viewed as two operating segments by the chief operating decision maker for purposes of resource allocation and assessing performance. See Note 14 for further information about the Company’s reportable segments. Preparation of Financial Statements and Use of Estimates The preparation of consolidated financial statements in conformity with 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, contingencies, stock-based compensation and litigation. 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 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. Revenue Recognition The Company recognizes revenue upon meeting all of the following revenue recognition criteria, which are typically met upon shipment or delivery of its products to customers: (i) persuasive evidence of an arrangement exists through customer contracts and orders, (ii) the customer takes title and assumes the risks and rewards of ownership, (iii) the sales price charged is fixed or determinable as evidenced by customer contracts and orders, and (iv) collectability is reasonably assured. Unbilled revenue relates to shipments that have been made to customers for which the related account receivable has not yet been billed. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 605-45, Revenue Recognition – Principal Agent Considerations , the Company generally reports revenue on a gross basis because the Company is the primary obligor in its arrangements to procure marketing materials and other products for its customers. Under these arrangements, the Company is responsible for the fulfillment, including the acceptability, of the marketing materials and other products. In addition, the Company (i) determines which suppliers are included in its network, (ii) has discretion to select from among the suppliers within its network, (iii) is obligated to pay its suppliers regardless of whether it is paid by its customers, and (iv) has reasonable latitude to establish exchange price. In some transactions, the Company also has general inventory risk and is involved in the determination of the nature or characteristics of the marketing materials and products. When the Company is not the primary obligor, revenues are reported net. The Company recognizes revenue for creative and other services provided to its customers which may be delivered in conjunction with the procurement of marketing materials at the time when delivery and customer acceptance occur and all other revenue recognition criteria are met. The Company recognizes revenue for creative and other services provided on a stand-alone basis upon completion of the service. Service revenue has not been material to the Company’s overall revenue to date. Stock-Based Compensation The Company accounts for stock-based compensation awards to employees and directors 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 for restricted shares. 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. Stock-based compensation cost recognized during the period is based on the portion of the share-based payment awards that are ultimately expected to vest. Accordingly, stock-based compensation cost recognized has been reduced for estimated forfeitures. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company recorded $1.2 million and $2.1 million in stock-based compensation expense for the three months ended March 31, 2016 and 2015 , respectively. During the first quarter of 2015 , $0.4 million of stock-based compensation expense was recognized related to the modification of a former executive’s award agreements in connection with his transition agreement. Recent Accounting Pronouncements In March 2016, the FASB issued Accounting Standards Update No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share - Based Payment Accounting , ("ASU 2016-09") which simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for annual and interim periods beginning after December 15, 2016. This guidance can be applied either prospectively, retrospectively or using a modified retrospective transition method. Early adoption is permitted. The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements . In March 2016, the FASB issued Accounting Standards Update No. 2016-08, Revenue from Contracts with Customers (Topic 606) Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), ("ASU 2016-08") and in April 2016, the FASB issued Accounting Standards Update No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing ("ASU 2016-10"), both of which provide supplemental adoption guidance and clarification to ASC 2014-09. ASU 2016-08 and ASU 2016-10 must be adopted concurrently with the adoption of ASU 2014-09. The Company is currently evaluating the impact of adopting these standards on its consolidated financial statements . In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (Topic 842) , ("ASU 2016-02") 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. The update is to be applied using a modified retrospective method and is effective for annual periods beginning after December 15, 2018 and interim periods within those annual periods. The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements . In November 2015, the FASB issued Accounting Standards Update No. 2015-17, Balance Sheet Classification of Deferred Taxes (Topic 740) , (“ASU 2015-17”) which simplifies the presentation of deferred income taxes. ASU 2015-17 provides presentation requirements to classify deferred tax assets and liabilities as noncurrent in the Balance Sheet. The standard will be effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted for financial statements that have not been previously issued. The ASU may be applied either prospectively to all deferred tax liabilities and assets or retrospectively to all periods presented. The Company adopted the standard as of December 31, 2015 and applied the changes prospectively. The adoption resulted in $1.9 million of net current deferred tax assets reclassified to non-current liabilities in the Consolidated Balance Sheets at December 31, 2015. Adoption had no impact on the Company's results of operations. In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount an entity expects to be entitled when products are transferred to customers. In August 2015, the FASB issued Accounting Standards Update 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date ( “ ASU 2015-14 ” ) which defers the effective date of ASU 2014-09 for all entities by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company is currently evaluating the impact of adopting these standards on its consolidated financial statements . In July 2015, the FASB issued Accounting Standards Update 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory ( “A SU 2015-11 ” ). ASU 2015-11 applies to inventory that is measured using first-in, first-out (FIFO) or average cost. Under the updated guidance, an entity should measure inventory that is within scope at the lower of cost and net realizable value, which is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Subsequent measurement is unchanged for inventory that is measured using last-in, last-out (LIFO). The standard is effective for annual and interim periods beginning after December 15, 2016, and should be applied prospectively with early adoption permitted at the beginning of an interim or annual reporting period. The Company is currently evaluating the impact of adopting ASU 2015-11 on its consolidated financial statements . In August 2014, the FASB issued Accounting Standards Update 2014-15, Presentation of Financial Statements – Going Concern (“ASU 2014-15”). ASU 2014-15 requires management to evaluate whether there are conditions and events that raise substantial doubt about the entity's ability to continue as a going concern and to provide disclosures in certain circumstances. The standard is effective for annual and interim periods beginning after December 15, 2016. The Company does not expect ASU 2014-15 to have a material impact on its consolidated financial statements. |