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Estimated Retail Value of Promotional Allowance (Details) - USD ($) $ in Thousands | 12 Months Ended
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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

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- Definition Promotional allowances. + References No definition available. + Details
Name: | gden_PromotionalAllowancesLineItems
Namespace Prefix: | gden_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- 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

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

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

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