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Rent Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Rent expense |  |  |  |
Operating Leases, Rent Expense | $ 13,830 | $ 8,779 | $ 41,222 | $ 8,965
Space Lease Agreements [Member] |  |  |  |
Rent expense |  |  |  |
Operating Leases, Rent Expense | 10,284 | 6,445 | 30,730 | 6,445
Related Party Leases [Member] |  |  |  |
Rent expense |  |  |  |
Operating Leases, Rent Expense | 468 | 433 | 1,873 | 433
Other Operating Leases [Member] |  |  |  |
Rent expense |  |  |  |
Operating Leases, Rent Expense | $ 3,078 | $ 1,901 | $ 8,619 | $ 2,087

X
- 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
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesOperatingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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