Acquisitions And Equity Investment (Narrative) (Details) - USD ($)						12 Months Ended
	Dec. 18, 2023	Aug. 29, 2023	Jul. 25, 2023	Jul. 20, 2023	Apr. 03, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Feb. 28, 2022
Schedule of Equity Method Investments [Line Items]
Net operating revenue						$ 575,919,000	$ 550,206,000	$ 430,529,000
Net earnings (loss) attributable to Century Casinos, Inc. shareholders						(128,170,000)	(28,198,000)	7,976,000
Goodwill						36,256,000	80,583,000
Rocky Gap Casino Resort [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest acquired			100.00%
Cash consideration			$ 59,100,000
Base price of acquisition			56,075,000
Business combination, acquired assets			244,900,000
Business combination, cash			6,653,000
Business combination, liabilities			212,100,000
Fair value of assets acquired and liabilities assumed excluding cash received			26,100,000
Fair value of acquired real estate assets			203,900,000
Acquisition costs							3,900,000	600,000
Range of contingencies, minimum						0
Net operating revenue						67,100,000	31,700,000
Net earnings (loss) attributable to Century Casinos, Inc. shareholders						(14,500,000)	(2,500,000)
Goodwill			26,473,000
Fees incurred for transition							100,000
Additional paid in working capital adjustment	$ 100,000
Nugget Sparks, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest acquired					100.00%				100.00%
Cash consideration					$ 104,700,000
Base price of acquisition					100,000,000
Business combination, acquired assets					256,600,000
Business combination, cash					6,764,000
Business combination, liabilities					194,800,000
Tax deductible goodwill					43,700,000
Fair value of assets acquired and liabilities assumed excluding cash received					55,100,000
Fair value of acquired real estate assets					184,700,000
Acquisition costs							500,000	2,000,000.0
Range of contingencies, minimum						100,000
Range of contingencies, maximum						200,000
Purchased amount for ownership interest					104,700,000
Net operating revenue						87,500,000	80,800,000
Net earnings (loss) attributable to Century Casinos, Inc. shareholders						$ (61,300,000)	1,300,000
Goodwill					$ 43,716,000
Fees incurred for transition							$ 400,000
Additional paid in working capital adjustment		$ 800,000
Trademarks [Member] | Rocky Gap Casino Resort [Member]
Schedule of Equity Method Investments [Line Items]
Useful life							10 years
Trademarks [Member] | Nugget Sparks, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Useful life						10 years
Player's Club Lists [Member] | Rocky Gap Casino Resort [Member]
Schedule of Equity Method Investments [Line Items]
Useful life							10 years
Player's Club Lists [Member] | Nugget Sparks, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Useful life						10 years
Goldman Sachs Bank USA and BOFA Securities, Inc [Member] | Revolving Credit Facility [Member]
Schedule of Equity Method Investments [Line Items]
Line of credit borrowings			30,000,000.0	$ 30,000,000.0
United States Segment [Member]
Schedule of Equity Method Investments [Line Items]
Net operating revenue						$ 419,668,000	$ 380,591,000	$ 268,582,000
Goodwill						$ 26,473,000	$ 70,189,000
United States Segment [Member] | Rocky Gap Casino Resort [Member]
Schedule of Equity Method Investments [Line Items]
Tax deductible goodwill			$ 26,500,000