Acquisition And Equity Investment (Narrative) (Details) - USD ($) $ in Thousands						12 Months Ended
	Dec. 18, 2023	Aug. 29, 2023	Jul. 25, 2023	Jul. 20, 2023	Apr. 03, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Total revenue						$ 550,206	$ 430,529	$ 388,506
Net earnings (loss) attributable to Century Casinos, Inc.						(28,198)	7,976	20,622
Goodwill						80,583	9,583
Rocky Gap Casino Resort [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest acquired			100.00%
Cash consideration			$ 59,100
Base price of acquisition			56,075
Business combination, acquired assets			244,900
Business combination, cash			6,653
Business combination, liabilities			212,100
Fair value of assets acquired and liabilities assumed excluding cash received			26,100
Fair value of acquired real estate assets			203,900
Acquisition costs						3,900	600
Range of contingencies, minimum						100
Range of contingencies, maximum						200
Total revenue						31,700
Net earnings (loss) attributable to Century Casinos, Inc.						(2,500)
Goodwill			26,473
Fees incurred for transition						100
Additional paid in working capital adjustment	$ 100
Nugget Sparks, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest acquired					100.00%
Cash consideration					$ 104,700
Base price of acquisition					100,000
Business combination, acquired assets					256,600
Business combination, cash					6,764
Business combination, liabilities					194,800
Tax deductible goodwill					43,700
Fair value of assets acquired and liabilities assumed excluding cash received					55,100
Fair value of acquired real estate assets					184,700
Acquisition costs						500	2,000
Range of contingencies, minimum						100
Range of contingencies, maximum						200
Purchased amount for ownership interest					104,700
Total revenue						80,800
Net earnings (loss) attributable to Century Casinos, Inc.						1,300
Goodwill					$ 43,716
Fees incurred for transition						400
Additional paid in working capital adjustment		$ 800
United States [Member]
Schedule of Equity Method Investments [Line Items]
Total revenue						$ 380,591	268,582	283,285
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	$ 30,000
United States Segment [Member]
Schedule of Equity Method Investments [Line Items]
Goodwill						$ 70,189
United States Segment [Member] | Rocky Gap Casino Resort [Member]
Schedule of Equity Method Investments [Line Items]
Tax deductible goodwill			$ 26,500
Corporate And Other [Member]
Schedule of Equity Method Investments [Line Items]
Total revenue						$ 61	$ 206	$ 567