Schedule of Heritage Global Inc. 2016 Stock Option Plan (Details) - shares		12 Months Ended
	Sep. 14, 2016	Dec. 31, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year		3,611,850	4,303,900
Options granted		474,750	649,850
Options exercised		(383,350)	(31,276)
Options forfeited		(167,025)	(545,624)
Options outstanding, end of year		3,516,225	3,611,850
2016 Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year		2,351,850	2,453,900
Options granted	2,539,200	259,750	324,850
Options exercised		(372,725)	(31,276)
Options forfeited		(167,025)	(395,624)
Options outstanding, end of year		2,071,850	2,351,850