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Schedule of Operating Lease Rental Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Operating Leased Assets [Line Items] |  |  |  |
Total rent expense | $ 14,203 | $ 12,960 | $ 27,623 | $ 26,248
Space Agreements [Member] |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |
Total rent expense | 10,003 | 9,112 | 19,422 | 18,639
Related Party Leases [Member] |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |
Total rent expense | 383 | 505 | 791 | 1,081
Other Operating Leases [Member] |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |
Total rent expense | $ 3,817 | $ 3,343 | $ 7,410 | $ 6,528

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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LeaseArrangementTypeAxis=gden_SpaceAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LeaseArrangementTypeAxis=gden_RelatedPartyLeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LeaseArrangementTypeAxis=gden_OtherOperatingLeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |