Segment Information (Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net operating revenue	$ 103,103	$ 72,415
Earnings (loss) before income taxes	4,144	(1,804)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	218	(1,419)
Income (benefit) taxes	1,435	99
Depreciation and amortization	6,795	6,643
Net earning (loss) attributable to non-controlling interests	2,491	(484)
Non-cash stock-based compensation	673	259
(Gain) loss on foreign currency transactions, cost recovery income and other	(1,893)	(470)
Loss on sale of land and building	2,154
Total assets	704,354		$ 703,358
Cash payments related to lease	1,344	1,581
Income related to the sale of the casino operations		75
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	32	123
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	65,248	64,371
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	15,999	2,011
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	21,824	5,910
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net operating revenue	103,103	72,415
Earnings (loss) before income taxes	4,144	(1,804)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	218	(1,419)
Interest expense (income), net	10,794	10,522
Income (benefit) taxes	1,435	(99)
Depreciation and amortization	6,795	6,643
Net earning (loss) attributable to non-controlling interests	2,491	(484)
Non-cash stock-based compensation	673	259
(Gain) loss on foreign currency transactions, cost recovery income and other	249	(981)
Loss on disposition of fixed assets	37	105
Acquisition costs	1,132
Adjusted EBITDA	23,824	(14,744)
Operating Segments [Member] | Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	32	123
Earnings (loss) before income taxes	(8,276)	(5,552)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(8,531)	(6,666)
Interest expense (income), net	3,233	3,276
Income (benefit) taxes	255	(1,114)
Depreciation and amortization	121	103
Non-cash stock-based compensation	673	259
(Gain) loss on foreign currency transactions, cost recovery income and other	(12)	(417)
Acquisition costs	1,132
Adjusted EBITDA	(3,129)	2,331
Operating Segments [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	65,248	64,371
Earnings (loss) before income taxes	8,521	10,594
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	8,521	10,594
Interest expense (income), net	7,007	6,935
Depreciation and amortization	4,768	4,525
Loss on disposition of fixed assets	19	73
Adjusted EBITDA	20,315	(22,127)
Operating Segments [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	15,999	2,011
Earnings (loss) before income taxes	1,944	(3,489)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(703)	(3,512)
Interest expense (income), net	567	307
Income (benefit) taxes	622	409
Depreciation and amortization	1,225	1,222
Net earning (loss) attributable to non-controlling interests	2,025	432
(Gain) loss on foreign currency transactions, cost recovery income and other	243	(557)
Loss on disposition of fixed assets	15	32
Adjusted EBITDA	3,994	2,485
Operating Segments [Member] | Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	21,824	5,910
Earnings (loss) before income taxes	1,955	(3,357)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	931	(1,835)
Interest expense (income), net	(13)	4
Income (benefit) taxes	558	606
Depreciation and amortization	681	793
Net earning (loss) attributable to non-controlling interests	466	(916)
(Gain) loss on foreign currency transactions, cost recovery income and other	18	(7)
Loss on disposition of fixed assets	3
Adjusted EBITDA	2,644	2,567
Master Lease [Member] | United States [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	7,000	6,900
Cash payments related to lease	4,300	4,200
CDR Land Lease [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	600	400
Cash payments related to lease	400	$ 300
Calgary [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Loss on sale of land and building	$ 2,200