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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: