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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

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