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Schedule of Goodwill (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2011 | Feb. 29, 2012 | Jun. 02, 2014
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Goodwill | $ 8,846 us-gaap_Goodwill | $ 5,301 us-gaap_Goodwill |  |  |
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 |  |
HGP [Member] |  |  |  |  |
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 |
NLEX [Member] |  |  |  |  |
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

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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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