Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 20, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	GP STRATEGIES CORP
Entity Central Index Key	0000070415
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	GPX
Entity Common Stock, Shares Outstanding		16,725,655
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2017