Segment And Geographic Information (Segment Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net operating revenue	$ 388,506	$ 304,268	$ 218,227
Earnings (loss) before income taxes	28,149	(43,288)	(11,967)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	20,622	(48,002)	(19,155)
Interest expense (income), net			8,229
Income taxes (benefit)	6,371	4,848	4,174
Depreciation and amortization	26,762	26,534	10,843
Net earning (loss) attributable to non-controlling interests	1,156	(134)	3,014
Non-cash stock-based compensation	2,652	(214)	1,303
(Gain) loss on foreign currency transactions, cost recovery income and other	(2,289)	63	(1,482)
(Gain) loss on foreign currency transactions, cost recovery income and other			(1,312)
Impairment - intangible and tangible assets		35,121	16,486
Loss (gain) on disposition of fixed assets			795
Acquisition costs			5,366
Pre-opening expenses			538
Adjusted EBITDA			30,281
Long-lived assets			644,664
Total assets	703,358	680,760	726,900
Capital expenditures			24,038
Cash payments related to lease	5,201	6,355	7,062
Income related to the sale of the casino operations	75	(6,575)
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	567	1,413	5,685
Impairment - intangible and tangible assets	0	0
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	283,285	198,344	49,998
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	46,428	50,240	80,650
Canada [Member] | Century Mile [Member]
Segment Reporting Information [Line Items]
Capital expenditures			15,000
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	58,226	54,271	81,894
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net operating revenue	388,506	304,268
Earnings (loss) before income taxes	28,149	(43,288)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	20,622	(48,002)
Interest expense (income), net	42,658	43,098
Income taxes (benefit)	6,371	4,848
Depreciation and amortization	26,762	26,534
Net earning (loss) attributable to non-controlling interests	1,156	(134)
Non-cash stock-based compensation	2,652	(214)
(Gain) loss on foreign currency transactions, cost recovery income and other	(2,686)	(13,145)
Impairment - intangible and tangible assets		35,121
Loss (gain) on disposition of fixed assets	391	26
Acquisition costs		266
Adjusted EBITDA	97,926	48,398
Long-lived assets	561,765	584,896
Total assets	703,358	680,760
Capital expenditures	10,012	10,705
Operating Segments [Member] | Corporate And Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	567	1,413	5,685
Earnings (loss) before income taxes	(25,712)	(18,031)	(37,866)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(30,570)	(18,609)	(35,115)
Interest expense (income), net	13,110	12,667	1,085
Income taxes (benefit)	4,858	578	(2,739)
Depreciation and amortization	432	566	910
Net earning (loss) attributable to non-controlling interests			(12)
Non-cash stock-based compensation	2,652	(214)	1,303
(Gain) loss on foreign currency transactions, cost recovery income and other	(418)	(6,897)
(Gain) loss on foreign currency transactions, cost recovery income and other			223
Impairment - intangible and tangible assets		1,000	16,486
Loss (gain) on disposition of fixed assets	(37)	1	345
Acquisition costs		266	5,366
Adjusted EBITDA	(9,973)	(10,642)	(12,148)
Long-lived assets	3,412	3,971	6,182
Total assets	57,448	32,523	24,703
Capital expenditures	531	162	837
Operating Segments [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	283,285	198,344	49,998
Earnings (loss) before income taxes	49,628	(29,548)	7,843
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	49,628	(30,571)	5,825
Interest expense (income), net	28,229	28,357	1,635
Income taxes (benefit)		1,023	2,018
Depreciation and amortization	18,398	17,580	2,330
(Gain) loss on foreign currency transactions, cost recovery income and other	(836)
Impairment - intangible and tangible assets		30,746
Loss (gain) on disposition of fixed assets	341	64	17
Adjusted EBITDA	95,760	47,199	11,825
Long-lived assets	376,210	385,426	424,790
Total assets	422,409	417,388	458,351
Capital expenditures	8,672	7,767	1,148
Operating Segments [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	46,428	50,240	80,650
Earnings (loss) before income taxes	3,312	6,869	11,242
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	1,124	2,551	6,669
Interest expense (income), net	1,796	2,047	5,312
Income taxes (benefit)	1,256	3,765	3,278
Depreciation and amortization	4,904	5,264	4,539
Net earning (loss) attributable to non-controlling interests	932	553	1,295
(Gain) loss on foreign currency transactions, cost recovery income and other	(545)	(6,015)
(Gain) loss on foreign currency transactions, cost recovery income and other			(439)
Impairment - intangible and tangible assets		3,375
Loss (gain) on disposition of fixed assets	43	(43)	20
Pre-opening expenses			538
Adjusted EBITDA	9,510	11,497	21,212
Long-lived assets	152,278	156,433	170,107
Total assets	179,297	181,477	191,925
Capital expenditures	646	2,057	17,865
Operating Segments [Member] | Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	58,226	54,271	81,894
Earnings (loss) before income taxes	921	(2,578)	6,814
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	440	(1,373)	3,466
Interest expense (income), net	(477)	27	197
Income taxes (benefit)	257	(518)	1,617
Depreciation and amortization	3,028	3,124	3,064
Net earning (loss) attributable to non-controlling interests	224	(687)	1,731
(Gain) loss on foreign currency transactions, cost recovery income and other	(887)	(233)
(Gain) loss on foreign currency transactions, cost recovery income and other			(1,096)
Loss (gain) on disposition of fixed assets	44	4	413
Adjusted EBITDA	2,629	344	9,392
Long-lived assets	29,865	39,066	43,585
Total assets	44,204	49,372	51,921
Capital expenditures	163	719	4,188
Master Lease [Member] | United States [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	28,200	28,400	1,600
Cash payments related to lease	25,300	25,000	3,800
CDR Land Lease [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Interest expense (income), net	1,800	1,500	2,200
Cash payments related to lease	2,000	1,300	2,000
Acquired Casinos [Member] | United States [Member]
Segment Reporting Information [Line Items]
Long-lived assets			377,000
Total assets			$ 404,500
Century Casino Calgary [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Income related to the sale of the casino operations		$ 6,500
Mountaineer, Land [Member]
Segment Reporting Information [Line Items]
Income related to the sale unused land	$ 800