Schedule of Heritage Global Inc. 2016 Stock Option Plan (Details) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	5,169,200	2,175,000
Options granted	50,000	3,259,200
Options forfeited	(168,750)	(205,000)
Options outstanding, end of year	5,040,450	5,169,200
2016 Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	2,539,200	0
Options granted	0	2,539,200
Options forfeited	(168,750)	0
Options outstanding, end of year	2,370,450	2,539,200