Segment Information (Segment Information) (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021		Dec. 31, 2021
Segment Reporting Information [Line Items]
Net operating revenue		$ 112,552		$ 116,610		$ 326,776		$ 281,207
Earnings (loss) before income taxes		5,065		14,972		8,640		20,561
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		2,944		11,226		12,018		16,662
Income taxes (benefit)		855		2,593		(8,130)		3,813
Depreciation and amortization		6,776		6,784		20,350		20,060
Net earnings attributable to non-controlling interests		1,266		1,153		4,752		86
Non-cash stock-based compensation						2,638		1,568
(Gain) loss on foreign currency transactions, cost recovery income and other		(409)		135		(2,725)		(302)
Loss on sale of land and building						2,154
Total assets		868,534				868,534				$ 703,358
Cash payments related to lease						3,579		3,960
Income related to the sale of the casino operations								28
Amortization and write-off of deferred financing costs and discount on note receivable						9,042		1,174
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue		36		194		131		456
Amortization and write-off of deferred financing costs and discount on note receivable						7,300
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue		70,718		73,897		206,275		214,969
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue		20,065		21,368		55,105		30,031
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue		21,733		21,151		65,265		35,751
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net operating revenue		112,552	[1]	116,610	[2]	326,776	[1]	281,207	[2]
Earnings (loss) before income taxes		5,065		14,972		8,640		20,561
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		2,944		11,226		12,018		16,662
Interest expense (income), net		15,350	[3]	10,620	[4]	47,939	[5]	31,830	[6]
Income taxes (benefit)		855		(2,593)		(8,130)		3,813
Depreciation and amortization		6,776		6,784		20,350		20,060
Net earnings attributable to non-controlling interests		1,266		1,153		4,752		86
Non-cash stock-based compensation		953		986		2,638		1,568
(Gain) loss on foreign currency transactions, cost recovery income and other		(409)		(313)		(583)	[7]	(1,261)
Loss (gain) on disposition of fixed assets		38		7		(37)		282
Acquisition costs		295				2,724
Adjusted EBITDA		28,068		(33,056)		81,671		73,040
Operating Segments [Member] | Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue		36	[1]	194	[2]	131	[1]	456	[2]
Earnings (loss) before income taxes		(10,982)		(6,488)		(36,626)		(18,289)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		(4,083)		(7,908)		(18,473)		(21,657)
Interest expense (income), net		8,087	[3]	3,294	[4]	25,482	[5]	9,825	[6]
Income taxes (benefit)		(6,899)		(1,420)		(18,153)		3,368
Depreciation and amortization		81		108		321		317
Non-cash stock-based compensation		953		986		2,638		1,568
(Gain) loss on foreign currency transactions, cost recovery income and other		(5)		(24)		(8)	[7]	(436)
Loss (gain) on disposition of fixed assets						(124)		(39)
Acquisition costs		295				2,724
Adjusted EBITDA		(1,571)		2,124		(5,593)		(7,054)
Operating Segments [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue		70,718	[1]	73,897	[2]	206,275	[1]	214,969	[2]
Earnings (loss) before income taxes		9,139		12,389		28,176		39,486
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		2,372		12,389		21,409		39,486
Interest expense (income), net		7,201	[3]	7,121	[4]	21,310	[5]	21,083	[6]
Income taxes (benefit)		6,767				6,767
Depreciation and amortization		4,892		4,699		14,418		13,734
(Gain) loss on foreign currency transactions, cost recovery income and other	[7]					(1)
Loss (gain) on disposition of fixed assets		11				33		282
Adjusted EBITDA		21,243		(24,209)		63,936		74,585
Operating Segments [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue		20,065	[1]	21,368	[2]	55,105	[1]	30,031	[2]
Earnings (loss) before income taxes		3,395		6,242		9,123		1,728
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		2,623		5,308		4,797		265
Interest expense (income), net		581	[3]	560	[4]	1,733	[5]	1,263	[6]
Income taxes (benefit)		522		(499)		1,718		661
Depreciation and amortization		1,180		1,217		3,632		3,689
Net earnings attributable to non-controlling interests		250		435		2,608		802
(Gain) loss on foreign currency transactions, cost recovery income and other		(71)		(57)		138	[7]	(604)
Loss (gain) on disposition of fixed assets				4		23		36
Adjusted EBITDA		5,085		(7,966)		14,649		6,112
Operating Segments [Member] | Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue		21,733	[1]	21,151	[2]	65,265	[1]	35,751	[2]
Earnings (loss) before income taxes		3,513		2,829		7,967		(2,364)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		2,032		1,437		4,285		(1,432)
Interest expense (income), net		(519)	[3]	(355)	[4]	(586)	[5]	(341)	[6]
Income taxes (benefit)		465		(674)		1,538		(216)
Depreciation and amortization		623		760		1,979		2,320
Net earnings attributable to non-controlling interests		1,016		718		2,144		(716)
(Gain) loss on foreign currency transactions, cost recovery income and other		(333)		(232)		(712)	[7]	(221)
Loss (gain) on disposition of fixed assets		27		3		31		3
Adjusted EBITDA		3,311		(3,005)		8,679		(603)
Master Lease [Member] | United States [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net		7,200		7,100		21,300		21,100
Cash payments related to lease		8,500		6,300		19,100		16,800
CDR Land Lease [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net		600		500		1,700		1,200
Cash payments related to lease		$ 500		$ 400		1,600		$ 1,300
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 $7.2 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 $8.5 million and $0.5 million, respectively, for the period presented.

[4] Expense of $7.1 million related to the Master Lease is included in interest expense, net in the United States segment. Expense of $0.5 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 $6.3 million and $0.4 million, respectively, for the period presented.

[5] Expense of $21.3 million related to the Master Lease is included in interest expense (income), net in the United States segment. Expense of $1.7 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 $19.1 million and $1.6 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.

[6] Expense of $21.1 million related to the Master Lease is included in interest expense, net in the United States segment. Expense of $1.2 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 $16.8 million and $1.3 million, respectively, for the period presented.

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