Schedule of Revenues and Operating Loss (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($)
CPFH LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Operating loss	$ (115)

Company's proportionate share of Joint Ventures' net income (loss) reported in the consolidated statement of operations as Earnings (Loss) of Equity Accounted Asset Liquidation Investments and attributable to the Company as its share.

No definition available.

Name:	hgbl_LossOfEquityAccountedAssetLiquidationInvestments
Namespace Prefix:	hgbl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration