Fair Value Measurements and Derivative Instruments Reporting (Narrative) (Details) $ in Thousands, CAD in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 CAD	Dec. 31, 2017 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of land lease				CAD 28.6	$ 22,800
Cash equivalents		$ 0			0
Operating expenses	$ 139,454	123,069	$ 117,938
LIM Center Casino [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Operating expenses	$ 100
Katowice Leashold Improvements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Casino license					$ 0
Operating expenses		$ 400