Basis of Presentation	3 Months Ended
Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation GP Strategies Corporation is a global performance improvement solutions provider of training, digital learning solutions, management consulting and engineering services. References in this report to “GP Strategies,” the “Company,” “we” and “our” are to GP Strategies Corporation and its subsidiaries, collectively. The accompanying condensed consolidated balance sheet as of March 31, 2019 and the condensed consolidated statements of operations, comprehensive income, stockholders' equity and cash flows for the three months ended March 31, 2019 and 2018 have not been audited, but have been prepared in conformity with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2018, as presented in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018. In the opinion of management, this interim information includes all material adjustments, which are of a normal and recurring nature, necessary for a fair presentation. The results for the 2019 interim period are not necessarily indicative of results to be expected for the entire year. The condensed consolidated financial statements include the operations of the Company and its subsidiaries. All significant intercompany balances and transactions have been eliminated. Certain prior year amounts have been reclassified to conform with the current year presentation. Beginning in the second quarter of 2018, sales and marketing expenses have been presented separately from general administrative expenses on the condensed consolidated statements of operations, whereas in prior periods these amounts were included in one caption titled "selling, general and administrative expenses." Amounts for the first quarter of 2018 have been reclassified to conform to the current year presentation.

Basis of Presentation

GP Strategies Corporation is a global performance improvement solutions provider of training, digital learning solutions, management consulting and engineering services. References in this report to “GP Strategies,” the “Company,” “we” and “our” are to GP Strategies Corporation and its subsidiaries, collectively.

The accompanying condensed consolidated balance sheet as of March 31, 2019 and the condensed consolidated statements of operations, comprehensive income, stockholders' equity and cash flows for the three months ended March 31, 2019 and 2018 have not been audited, but have been prepared in conformity with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2018, as presented in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018. In the opinion of management, this interim information includes all material adjustments, which are of a normal and recurring nature, necessary for a fair presentation. The results for the 2019 interim period are not necessarily indicative of results to be expected for the entire year.

The condensed consolidated financial statements include the operations of the Company and its subsidiaries. All significant intercompany balances and transactions have been eliminated.

Certain prior year amounts have been reclassified to conform with the current year presentation. Beginning in the second quarter of 2018, sales and marketing expenses have been presented separately from general administrative expenses on the condensed consolidated statements of operations, whereas in prior periods these amounts were included in one caption titled "selling, general and administrative expenses." Amounts for the first quarter of 2018 have been reclassified to conform to the current year presentation.