Acquisitions (Narrative) (Details) $ in Thousands			12 Months Ended
	May 22, 2020 USD ($)	Dec. 06, 2019 USD ($) item	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Net (loss) earnings attributable to Century Casinos, Inc. shareholders			$ 20,622	$ (48,002)	$ (19,155)
Goodwill			10,347	10,901
Acquired Casinos [Member]
Business Acquisition [Line Items]
Total consideration		$ 389,600
Initial payment		110,700
Base price		107,200
Working capital adjustment	$ 1,200
Acquisition costs				300	5,400
Acquisition-related contingencies			500	600
Macquarie Capital [Member] | Credit Agreement [Member]
Business Acquisition [Line Items]
Credit facility amount		$ 180,000
VICI PropCo [Member] | Master Lease [Member]
Business Acquisition [Line Items]
Initial lease term		15 years
Number of renewal options | item		4
Lease renewal term		5 years
Century Casino Cape Girardeau [Member] | Acquired Casinos [Member]
Business Acquisition [Line Items]
Operating revenue			73,600	49,500	4,600
Net (loss) earnings attributable to Century Casinos, Inc. shareholders			15,300	(22,800)	600
Century Casino Caruthersville [Member] | Acquired Casinos [Member]
Business Acquisition [Line Items]
Operating revenue			49,400	30,000	2,800
Net (loss) earnings attributable to Century Casinos, Inc. shareholders			13,100	(8,500)	400
Mountaineer Casino [Member] | Acquired Casinos [Member]
Business Acquisition [Line Items]
Operating revenue			115,000	90,200	8,700
Net (loss) earnings attributable to Century Casinos, Inc. shareholders			6,200	(5,900)	400
United States [Member]
Business Acquisition [Line Items]
Goodwill
United States [Member] | Acquired Casinos [Member]
Business Acquisition [Line Items]
Ancillary agreement fees				200
Corporate And Other [Member] | Acquired Casinos [Member]
Business Acquisition [Line Items]
Ancillary agreement fees				$ 400
Corporate And Other [Member] | Acquired Casinos [Member] | Maximum [Member]
Business Acquisition [Line Items]
Ancillary agreement fees					$ 100