Stockholders' Equity - Schedule of Heritage Global Inc. 2016 Stock Option Plan (Details) - shares			12 Months Ended
	Apr. 08, 2021	Dec. 31, 2016	Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year			3,516,225	3,611,850
Options granted	25,000		722,500	474,750
Options exercised			(1,895,437)	(383,350)
Options forfeited			(150,000)	(167,025)
Options outstanding, end of year			2,193,288	3,516,225
2016 Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year			2,071,850	2,351,850
Options granted		2,539,200	522,500	259,750
Options exercised			(1,079,187)	(372,725)
Options forfeited			(57,500)	(167,025)
Options outstanding, end of year			1,457,663	2,071,850