Commitments And Contingencies (Narrative) (Details) $ in Thousands, zł in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2021 PLN (zł)	Mar. 31, 2020 USD ($)	Mar. 31, 2020 PLN (zł)	Mar. 31, 2021 PLN (zł)	Dec. 31, 2020 USD ($)
Commitments and Contingencies [Line items]
Contingent liability	$ 453					$ 476
General and administrative	20,268		$ 26,372
Casinos Poland [Member]
Commitments and Contingencies [Line items]
Income tax audit costs	4,200	zł 14.3
Casinos Poland [Member] | Lot Polish Airlines Invesment [Member]
Commitments and Contingencies [Line items]
General and administrative			$ 700	zł 3.0
Casinos Poland [Member] | Polish Airports Company [Member] | Lot Polish Airlines Invesment [Member]
Commitments and Contingencies [Line items]
Ownership interest			33.30%	33.30%
Review of All Tax Open Periods [Member]
Commitments and Contingencies [Line items]
Contingent liability	$ 500				zł 1.8