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Intangible Assets and Goodwill (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 1 Months Ended | 0 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Feb. 29, 2012 | Jun. 02, 2014 | Dec. 31, 2011
Business Acquisition, Intangible Assets |  |  |  | $ 3,390 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles |
Goodwill | 8,846 us-gaap_Goodwill | 5,301 us-gaap_Goodwill |  |  |
Amortization expense, intangible assets | 543 us-gaap_AmortizationOfIntangibleAssets | 453 us-gaap_AmortizationOfIntangibleAssets |  |  |
HGP [Member] |  |  |  |  |
Business Acquisition, Cost of acquired entity |  |  | 7,080 hgbl_BusinessAcquisitionAcquiredEntityPurchasePrice / us-gaap_BusinessAcquisitionAxis = hgbl_HgpMember |  |
Business Acquisition, Intangible Assets |  |  | 5,640 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_HgpMember |  |
Goodwill | 4,728 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_HgpMember | 4,728 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_HgpMember | 4,728 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_HgpMember |  |
HGP [Member] | Customer/Broker Network [Member] |  |  |  |  |
Business Acquisition, Intangible Assets |  |  | 4,180 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_HgpMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = hgbl_CustomerBrokerNetworkMember |  |
Finite lived intangible assets, amortization period |  |  | 12 years |  |
HGP [Member] | Trade Name [Member] |  |  |  |  |
Business Acquisition, Intangible Assets |  |  | 1,460 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_HgpMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember |  |
Finite lived intangible assets, amortization period |  |  | 14 years |  |
NLEX [Member] |  |  |  |  |
Business Acquisition, Intangible Assets |  |  |  | 3,390 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember |
Goodwill | 3,545 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember | 0 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember |  | 3,545 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember |
NLEX [Member] | Trade Name [Member] |  |  |  |  |
Business Acquisition, Intangible Assets |  |  |  | 2,437 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember |
NLEX [Member] | Customer Relationships [Member] |  |  |  |  |
Business Acquisition, Intangible Assets |  |  |  | 834 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |
Finite lived intangible assets, amortization period |  |  |  | 7 years 7 months 6 days |
NLEX [Member] | Non-Compete Agreement [Member] |  |  |  |  |
Business Acquisition, Intangible Assets |  |  |  | 71 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember |
Finite lived intangible assets, amortization period |  |  |  | 2 years |
NLEX [Member] | NLEX's Website [Member] |  |  |  |  |
Business Acquisition, Intangible Assets |  |  |  | 48 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hgbl_NlexMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = hgbl_NlexsWebsiteMember |
Finite lived intangible assets, amortization period |  |  |  | 5 years |
Equity Partners [Member] |  |  |  |  |
Goodwill | $ 573 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_EquityPartnersMember | $ 573 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_EquityPartnersMember |  |  | $ 573 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hgbl_EquityPartnersMember

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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References No definition available. + Details
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X
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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