Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingencies	ContingenciesOn July 14, 2021, the Company’s management was notified by the UK Health and Safety Executive (HSE) of possible violations of workplace safety rules by a U.K. subsidiary of GP Strategies, related to workplace injuries suffered in 2019 by an individual working at a site at which the Company was the principal contractor. The HSE has indicated that certain charges are under consideration, although a decision on whether to prosecute has not been made. The Company is working with counsel to respond to the HSE; however, counsel advises that it is likely that charges will be filed. Legal costs will be recognized as incurred. If charges are filed, the burden would be upon the Company to establish compliance with applicable rules. In the event the Company is determined to have violated applicable laws, statutory penalties will be imposed by the court. The Company anticipates that such penalties, if assessed, are unlikely to exceed $1.25 million. Based on the present status of these matters, management believes the range of reasonably possible losses to be $0 to $1.25 million.