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Schedule of the components of assets and liabilities attributable to the Company from the Joint Ventures in which it is invested (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Current assets | $ 1,095 hgbl_AssetLiquidationAssetsCurrent | $ 1,415 hgbl_AssetLiquidationAssetsCurrent
Non-current assets | 0 hgbl_AssetLiquidationAssetsNoncurrent | 87 hgbl_AssetLiquidationAssetsNoncurrent
Current liabilities | 117 hgbl_AssetLiquidationLiabilitiesCurrent | 122 hgbl_AssetLiquidationLiabilitiesCurrent
Non-current liabilities | $ 0 hgbl_AssetLiquidationLiabilitiesNoncurrent | $ 0 hgbl_AssetLiquidationLiabilitiesNoncurrent

X
- Definition Sum of the carrying amounts as of the balance sheet date of the company's share of all joint venture assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References No definition available. + Details
Name: | hgbl_AssetLiquidationAssetsCurrent
Namespace Prefix: | hgbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Sum of the carrying amounts as of the balance sheet date of the company's share of all joint venture assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. + References No definition available. + Details
Name: | hgbl_AssetLiquidationAssetsNoncurrent
Namespace Prefix: | hgbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The company's share of joint ventures' total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. + References No definition available. + Details
Name: | hgbl_AssetLiquidationLiabilitiesCurrent
Namespace Prefix: | hgbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The company's share of joint ventures' total obligations incurred as part of normal operations that is expected to be repaid beyond the following twelve months or one business cycle. + References No definition available. + Details
Name: | hgbl_AssetLiquidationLiabilitiesNoncurrent
Namespace Prefix: | hgbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant