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Fair Value Measurements And Derivative Instruments Reporting (Narrative) (Details)
$ in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
CAD ($)
Dec. 31, 2017
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impairment - intangible and tangible assets $ 16,486      
Fair value of land lease 22,000   $ 28.6  
Cash equivalents $ 0 $ 0    
LIM Center Casino [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities measured at fair value on a nonrecurring basis       $ 100