Segment Information (Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023		Mar. 31, 2022
Segment Reporting Information [Line Items]
Net operating revenue	$ 108,508		$ 103,103
Earnings (loss) before income taxes	4,654		4,144
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(1,243)		218
Income taxes (benefit)	1,623		1,435
Depreciation and amortization	6,855		6,795
Net earnings attributable to non-controlling interests	4,274		2,491
Non-cash stock-based compensation	736		673
Cash payments related to lease	1,249		1,344
Earn out from the sale of casino operations	574
Loss on sale of assets (Note 1)			2,154
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net operating revenue	108,508		103,103
Earnings (loss) before income taxes	4,654		4,144
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(1,243)		218
Interest expense (income), net	17,504	[1]	10,794	[2]
Income taxes (benefit)	1,623		1,435
Depreciation and amortization	6,855		6,795
Net earnings attributable to non-controlling interests	4,274		2,491
Non-cash stock-based compensation	736		673
(Gain) loss on foreign currency transactions, cost recovery income and other (3)	(4,332)		249
Loss on disposition of fixed assets	479		37
Acquisition costs	158		1,132
Adjusted EBITDA	26,054		23,824
Operating Segments [Member] | Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	57		32
Earnings (loss) before income taxes	(12,478)		(8,276)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(10,059)		(8,531)
Interest expense (income), net	9,957	[1]	3,233	[2]
Income taxes (benefit)	(2,419)		255
Depreciation and amortization	61		121
Non-cash stock-based compensation	736		673
(Gain) loss on foreign currency transactions, cost recovery income and other (3)	7		(12)
Loss on disposition of fixed assets	5
Acquisition costs	158		1,132
Adjusted EBITDA	(1,554)		(3,129)
Operating Segments [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	66,369		65,248
Earnings (loss) before income taxes	7,151		8,521
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	5,375		8,521
Interest expense (income), net	7,119	[1]	7,007	[2]
Income taxes (benefit)	1,776
Depreciation and amortization	5,032		4,768
Loss on disposition of fixed assets	470		19
Adjusted EBITDA	19,772		20,315
Operating Segments [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	16,503		15,999
Earnings (loss) before income taxes	6,989		1,944
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	1,867		(703)
Interest expense (income), net	523	[1]	567	[2]
Income taxes (benefit)	1,634		622
Depreciation and amortization	1,127		1,225
Net earnings attributable to non-controlling interests	3,488		2,025
(Gain) loss on foreign currency transactions, cost recovery income and other (3)	(4,085)		243
Loss on disposition of fixed assets	3		15
Adjusted EBITDA	4,557		3,994
Operating Segments [Member] | Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	25,579		21,824
Earnings (loss) before income taxes	2,992		1,955
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	1,574		931
Interest expense (income), net	(95)	[1]	(13)	[2]
Income taxes (benefit)	632		558
Depreciation and amortization	635		681
Net earnings attributable to non-controlling interests	786		466
(Gain) loss on foreign currency transactions, cost recovery income and other (3)	(254)		18
Loss on disposition of fixed assets	1		3
Adjusted EBITDA	3,279		2,644
Master Lease [Member] | United States [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	7,100		7,000
Cash payments related to lease	6,900		4,300
CDR Land Lease [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	500		600
Cash payments related to lease	500		400
Calgary [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Loss on sale of assets (Note 1)			$ 2,200
Century Casino Calgary [Member] | Calgary [Member]
Segment Reporting Information [Line Items]
Earn out from the sale of casino operations	$ 600

[1] Expense of $7.1 million related to the Master Lease is included in interest expense (income), net in the United States segment. Expense of $0.5 million related to the CDR land lease is included in interest expense (income), net in the Canada segment. Cash payments related to the Master Lease and CDR land lease were $6.9 million and $0.5 million, respectively, for the period presented. (3)Includes $0.6 million related to the earn out from the sale of casino operations in Calgary in 2020 and cost recovery income for CDR.

[2] Expense of $7.0 million related to the Master Lease is included in interest expense (income), net in the United States segment. Expense of $0.6 million related to the CDR land lease is included in interest expense (income), net in the Canada segment. Cash payments related to the Master Lease and CDR land lease were $4.3 million and $0.4 million, respectively, for the period presented.(3)Loss of $2.2 million related to the sale of the land and building in Calgary is included in the Canada segment.