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Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Significant Accounting Policies [Line Items]
Restricted cash	$ 1,062
Estimated cost of promotional allowances		$ 2,442
Duration in which payments for management and consulting services fees are typically due	30 days
Impairment on receivables and contract liabilities	$ 0
Hotel, Food And Beverage [Member]
Significant Accounting Policies [Line Items]
Estimated cost of promotional allowances	$ 300
Maximum [Member]
Significant Accounting Policies [Line Items]
Duration of Company's contracts and contract liabilities	1 year
Expected duration of performace obligation	1 year
Leashold Improvements [Member] | Saw Close Casino Ltd. [Member]
Significant Accounting Policies [Line Items]
Restricted cash	$ 1,100
Included In Deposits And Other [Member]
Significant Accounting Policies [Line Items]
Restricted cash	729	191
Included In Deposits And Other [Member] | Saw Close Casino Ltd. [Member]
Significant Accounting Policies [Line Items]
Restricted cash	600
Deposits Related To Payments Of Prizes and Giveaways [Member] | Casinos Poland Ltd [Member]
Significant Accounting Policies [Line Items]
Restricted cash	100
Opening [Member]
Significant Accounting Policies [Line Items]
Contract Liabilitiy	$ 235	$ 232

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