Summary of Significant Accounting Policies (Organization) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2017 USD ($) entity segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Organization Attributes [Line Items]
Subsidiaries, Ownership Percentage	80.00%
Interest Costs Capitalized		$ 500	$ 100
Income Tax Expense (Benefit)	$ 3,006	$ (197,486)	$ (6,634)
Number of Gaming Entertainment Properties \| entity	24
Number of reportable segments \| segment	3
Adjustments for Change in Accounting Principle [Domain]
Organization Attributes [Line Items]
Income Tax Expense (Benefit)	$ 1,500

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration