Segment Information (Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022		Jun. 30, 2021		Dec. 31, 2021
Segment Reporting Information [Line Items]
Net operating revenue	$ 111,122	$ 92,185	$ 214,224		$ 164,599
Earnings (loss) before income taxes	(570)	7,392	3,574		5,588
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	8,856	6,855	9,074		5,436
Income taxes (benefit)	(10,421)	1,120	(8,986)		1,219
Depreciation and amortization	6,779	6,633	13,574		13,276
Net earning (loss) attributable to non-controlling interests	995	(583)	3,486		(1,067)
Non-cash stock-based compensation			1,685		582
(Gain) loss on foreign currency transactions, cost recovery income and other	(424)	33	(2,317)		(437)
Loss on sale of land and building			2,154
Total assets	875,822		875,822				$ 703,358
Cash payments related to lease			2,551		2,862
Income related to the sale of the casino operations					75
Write-off of deferred financing costs			8,351		783
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	65	138	98		262
Write-off of deferred financing costs	7,300		7,300
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	70,313	76,700	135,556		141,072
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	19,037	6,658	35,039		8,666
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	21,707	8,689	43,531		14,599
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net operating revenue	111,122	92,185	214,224	[1]	164,599	[2]
Earnings (loss) before income taxes	(570)	7,392	3,574		5,588
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	8,856	6,855	9,074		5,436
Interest expense (income), net	21,796	10,687	32,589	[3]	21,210	[4]
Income taxes (benefit)	(10,421)	(1,120)	(8,986)		1,219
Depreciation and amortization	6,779	6,633	13,574		13,276
Net earning (loss) attributable to non-controlling interests	995	(583)	3,486		(1,067)
Non-cash stock-based compensation	1,012	323	1,685		582
(Gain) loss on foreign currency transactions, cost recovery income and other	(424)	33	(175)	[5]	(948)
Loss (gain) on disposition of fixed assets	(112)	170	(75)		275
Acquisition costs	1,297		2,429
Adjusted EBITDA	29,778	(25,238)	53,601		39,983
Operating Segments [Member] | Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	65	138	98	[1]	262	[2]
Earnings (loss) before income taxes	(17,372)	(6,253)	(25,644)		(11,802)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(5,862)	(7,084)	(14,389)		(13,747)
Interest expense (income), net	14,162	3,253	17,395	[3]	6,530	[4]
Income taxes (benefit)	(11,510)	(831)	(11,255)		1,945
Depreciation and amortization	119	105	240		205
Non-cash stock-based compensation	1,012	323	1,685		582
(Gain) loss on foreign currency transactions, cost recovery income and other	7	5	(5)	[5]	(411)
Loss (gain) on disposition of fixed assets	(121)	(39)	(121)		(39)
Acquisition costs	1,297		2,429
Adjusted EBITDA	(896)	2,606	(4,021)		(4,935)
Operating Segments [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	70,313	76,700	135,556	[1]	141,072	[2]
Earnings (loss) before income taxes	10,521	16,502	19,038		27,096
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	10,521	16,502	19,038		27,096
Interest expense (income), net	7,103	7,027	14,109	[3]	13,962	[4]
Depreciation and amortization	4,758	4,509	9,526		9,036
Loss (gain) on disposition of fixed assets		209	19		282
Adjusted EBITDA	22,382	(28,247)	42,692		50,376
Operating Segments [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	19,037	6,658	35,039	[1]	8,666	[2]
Earnings (loss) before income taxes	3,783	(1,018)	5,726		(4,510)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	2,875	(1,525)	2,170		(5,040)
Interest expense (income), net	585	396	1,152	[3]	703	[4]
Income taxes (benefit)	574	(572)	1,197		163
Depreciation and amortization	1,226	1,251	2,452		2,473
Net earning (loss) attributable to non-controlling interests	334	(65)	2,359		367
(Gain) loss on foreign currency transactions, cost recovery income and other	(34)	10	209	[5]	(548)
Loss (gain) on disposition of fixed assets	8		23		32
Adjusted EBITDA	5,568	(639)	9,562		(1,850)
Operating Segments [Member] | Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	21,707	8,689	43,531	[1]	14,599	[2]
Earnings (loss) before income taxes	2,498	(1,839)	4,454		(5,196)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	1,322	(1,038)	2,255		(2,873)
Interest expense (income), net	(54)	11	(67)	[3]	15	[4]
Income taxes (benefit)	515	283	1,072		(889)
Depreciation and amortization	676	768	1,356		1,562
Net earning (loss) attributable to non-controlling interests	661	(518)	1,127		(1,434)
(Gain) loss on foreign currency transactions, cost recovery income and other	(397)	18	(379)	[5]	11
Loss (gain) on disposition of fixed assets	1		4
Adjusted EBITDA	2,724	1,042	5,368		(3,608)
Master Lease [Member] | United States [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	7,100	7,000	14,100		14,000
Cash payments related to lease	6,400	6,300	10,600		10,500
CDR Land Lease [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	600	400	1,100		700
Cash payments related to lease	$ 700	$ 600	1,000		$ 900
Calgary [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Loss on sale of land and building			$ 2,200

[1] Net operating revenue for Corporate and Other primarily related to the Company’s cruise ship operations.

[2] Net operating revenue for Corporate and Other primarily related to the Company’s cruise ship operations and consulting agreements.

[3] Expense of $14.1 million related to the Master Lease is included in interest expense (income), net in the United States segment. Expense of $1.1 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 $10.6 million and $1.0 million respectively, for the period presented. Expense of $7.3 million related to the write-off of deferred financing costs in connection with the prepayment of the Macquarie Term Loan is included in interest expense (income), net in the Corporate and Other segment.(3)Loss of $2.2 million related to the sale of the land and building in Calgary is included in the Canada segment.

[4] Expense of $14.0 million related to the Master Lease is included in interest expense, net in the United States segment. Expense of $0.7 million related to the CDR land lease is included in interest expense, net in the Canada segment. Cash payments related to the Master Lease and CDR land lease were $10.5 million and $0.9 million respectively, for the period presented.

[5] Loss of $2.2 million related to the sale of the land and building in Calgary is included in the Canada segment.