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Estimated Retail Value of Promotional Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Promotional Allowances [Line Items]
Promotional allowances	$ 28,868	$ 21,191	$ 8,882
Food and Beverage [Member]
Promotional Allowances [Line Items]
Promotional allowances	23,886	18,324	6,633
Rooms [Member]
Promotional Allowances [Line Items]
Promotional allowances	3,790	2,263	2,035
Other [Member]
Promotional Allowances [Line Items]
Promotional allowances	$ 1,192	$ 604	$ 214

X

- Definition

Promotional allowances.

+ References

No definition available.

+ Details

Name:	gden_PromotionalAllowancesLineItems
Namespace Prefix:	gden_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element represents the estimated retail value of accommodations, food and beverage, and other services furnished to guests without charge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 605
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=68080496&loc=d3e51325-107943

+ Details

Name:	us-gaap_PromotionalAllowances
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gden_FoodAndBeverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gden_RoomsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gden_OtherPromotionalAllowancesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: