Commitments, Contingencies And Other Matters (Narrative) (Details) $ in Thousands, PLN in Millions	12 Months Ended				36 Months Ended
	Dec. 31, 2017 PLN item	Dec. 31, 2017 USD ($) item	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 PLN	Dec. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 PLN	Dec. 31, 2015 USD ($)
Commitments and Contingencies [Line items]
Contingent liability			$ 2,099				$ 1,833
Distribution to non-controlling interest		$ 2,043	1,897	$ 507
Rental expenses		4,600	$ 3,900	3,900
Lot Polish Airlines Invesment [Member]
Commitments and Contingencies [Line items]
Owned by noncontrolling interest	33.30%		33.30%		33.30%		33.30%
Awarded arbitration	PLN 1.2	300
Casinos Poland Ltd [Member]
Commitments and Contingencies [Line items]
Income tax audit costs					PLN 9.4	$ 2,900
Century Downs Racetrack And Casino [Member]
Commitments and Contingencies [Line items]
Owned by noncontrolling interest	25.00%				25.00%		25.00%
Distribution to non-controlling interest		600	$ 1,600
Review of Tax Year 2010 [Member]
Commitments and Contingencies [Line items]
Contingent liability	PLN 6.3				PLN 6.3		$ 1,800
Reduction to contingent liability								PLN 3.4	$ 900
Review of Tax Years 2012 and 2013 [Member]
Commitments and Contingencies [Line items]
Income tax audit costs	PLN 4.8	$ 1,400
401K Plan [Member]
Commitments and Contingencies [Line items]
Vesting period for plan	6 years	6 years
Contributed to plan		$ 100	100	100
RSP And RPP Plans [Member]
Commitments and Contingencies [Line items]
Vesting period for plan	2 years	2 years
Number of registered retirement plans in Canada | item	2	2
Contributed to plan		$ 200	$ 200	$ 100