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Description Of Business And Basis Of Presentation (Narrative) (Details) $ in Thousands, $ in Millions		1 Months Ended				12 Months Ended
	Aug. 05, 2019 USD ($)	Aug. 31, 2019 CAD ($)	May 31, 2019 USD ($)	Sep. 30, 2017 USD ($)	Aug. 31, 2017 item	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($)	Dec. 31, 2019 CAD ($) item	Dec. 31, 2019 USD ($) item	Jul. 31, 2019	Jun. 30, 2019 USD ($)	Apr. 30, 2018	Apr. 25, 2018	Dec. 31, 2013
Description Of Business And Basis Of Presentation [Line Items]
Loss on sale of investment						$ (1)	$ 23
Polish Airports Company [Member]
Description Of Business And Basis Of Presentation [Line Items]
Owned by noncontrolling interest								33.30%	33.30%					33.30%
Golden Hospitality Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership interest												49.00%
Lot Polish Airlines Invesment [Member] | Polish Airports Company [Member]
Description Of Business And Basis Of Presentation [Line Items]
Owned by noncontrolling interest								33.30%	33.30%
Casinos Poland [Member]
Description Of Business And Basis Of Presentation [Line Items]
Number of casinos owned and operated | item						8
Century Resorts Management [Member] | Mendoza Central Entretenimientos S. A. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership interest								7.50%	7.50%
Century Resorts Management [Member] | Golden Hospitality Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage													51.00%
Century Mile [Member] | Multi-Level REC [Member]
Description Of Business And Basis Of Presentation [Line Items]
Project cost								$ 61.5	$ 47,400
Century Bets [Member] | Rocky Mountain Turf Club [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage		25.00%								75.00%
Purchased amount for ownership interest	$ 200	$ 0.2
Casinos Poland [Member] | Lot Polish Airlines Invesment [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage								66.60%	66.60%
Century Resorts Management GmbH [Member] | Hamilton Properties Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Number of slot machines | item					200
Number of table games | item					17
Potential loan for purchase of equipment				$ 5,000
Century Resorts Management GmbH [Member] | Hamilton Properties Ltd. [Member] | Minimum [Member]
Description Of Business And Basis Of Presentation [Line Items]
Number of electronic table games | item					1
Golden Hospitality Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Proceeds from non-interest bearing promissory note			$ 700
Loss on sale of investment						$ 100
TUI Cruises [Member]
Description Of Business And Basis Of Presentation [Line Items]
Number of ship-based casinos | item								5	5
Diamond Cruises [Member]
Description Of Business And Basis Of Presentation [Line Items]
Wrote-down in property, equipment and net receivables											$ 1,000
Century Downs Racetrack And Casino [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage								75.00%	75.00%
Century Downs Racetrack And Casino [Member] | Unaffiliated Shareholders [Member]
Description Of Business And Basis Of Presentation [Line Items]
Owned by noncontrolling interest								25.00%	25.00%
Minh Chau Ltd. [Member] | Golden Hospitality Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage												51.00%
Ownership interest												51.00%
Minh Chau Ltd. [Member] | Option to Purchase [Member] | Golden Hospitality Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage												70.00%
Minh Chau Ltd. [Member] | Golden Hospitality Ltd. [Member] | Golden Hospitality Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership interest			9.21%
Included In Deposits And Other [Member]
Description Of Business And Basis Of Presentation [Line Items]
Restricted cash							$ 709		$ 886
Included In Deposits And Other [Member] | Century Casino Bath [Member]
Description Of Business And Basis Of Presentation [Line Items]
Restricted cash									600
Deposits Related To Payments Of Prizes And Giveaways [Member] | Casinos Poland [Member]
Description Of Business And Basis Of Presentation [Line Items]
Restricted cash									$ 300

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