Condensed Consolidated Statements Of Equity - USD ($) $ in Thousands		Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	[2]	Retained Earnings [Member]	Total Century Casinos, Inc. Shareholders' Equity [Member]	Noncontrolling Interests [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	[2]	Noncontrolling Interests [Member]	Total
BALANCE at Dec. 31, 2018		$ 294	$ 114,214	$ (14,243)			$ 76,056				$ 7,062
Net (loss) earnings							503				1,578	$ 2,081
Foreign currency translation adjustment				3,417							190	3,607
Amortization of stock-based compensation	[1]		621
Distribution to non-controlling interest											(989)
Changes in non-controlling interest											(399)
Exercise of options			45
BALANCE at Jun. 30, 2019		$ 294	114,880	(10,826)	$ 232		76,327	$ 180,675	$ 49		7,393	188,068
Common shares issued		9,000
BALANCE at Mar. 31, 2019		$ 294	114,475	(12,814)			76,892				7,570
Net (loss) earnings							(565)				923	358
Foreign currency translation adjustment				1,988							251	2,239
Amortization of stock-based compensation	[1]		360
Distribution to non-controlling interest											(952)
Changes in non-controlling interest											(399)
Exercise of options			45
BALANCE at Jun. 30, 2019		$ 294	114,880	(10,826)	$ 232		76,327	180,675	$ 49		7,393	188,068
Common shares issued		9,000
BALANCE at Dec. 31, 2019		$ 295	115,784	(9,442)			56,669				8,769	$ 172,075
BALANCE, Shares at Dec. 31, 2019												29,500,327
Performance stock unit issuance		1
Net (loss) earnings							(58,463)				(395)	$ (58,858)
Foreign currency translation adjustment				(7,197)							(502)	(7,699)
Amortization of stock-based compensation	[1]		235
Distribution to non-controlling interest											(158)
BALANCE at Jun. 30, 2020		$ 296	116,019	(16,639)			(1,794)	97,882			7,714	$ 105,596
BALANCE, Shares at Jun. 30, 2020												29,575,962
Common shares issued		75,635
BALANCE at Mar. 31, 2020		$ 296	115,770	(22,280)			10,813				8,075
Net (loss) earnings							(12,607)				(590)	$ (13,197)
Foreign currency translation adjustment				5,641							387	6,028
Amortization of stock-based compensation	[1]		249
Distribution to non-controlling interest											(158)
BALANCE at Jun. 30, 2020		$ 296	$ 116,019	$ (16,639)			$ (1,794)	$ 97,882			$ 7,714	$ 105,596
BALANCE, Shares at Jun. 30, 2020												29,575,962

[1] Includes forfeiture credit for cancelled shares.

[2] Cumulative effect of accounting change relates to the adoption of Accounting Standards Update 2016-02. See Note 13 to the unaudited condensed consolidated financial statements for further details on the adoption of this accounting standard.