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]	Total Century Casinos Shareholders' Equity [Member]	Noncontrolling Interests [Member]	Total
BALANCE at Dec. 31, 2016	$ 245	$ 78,174	$ (12,609)	$ 66,386	$ 132,196	$ 6,388	$ 138,584
BALANCE, Shares at Dec. 31, 2016	24,451,582
Net earnings				11,592	11,592	1,329	12,921
Foreign currency translation adjustment			6,114		6,114	1,185	7,299
Amortization of stock-based compensation		419			419		419
Distribution to non-controlling interest						(1,457)	(1,457)
Exercise of stock options		32			32		32
Exercise of stock options, shares	20,738
BALANCE at Sep. 30, 2017	$ 245	78,608	(6,495)	77,995	150,353	7,445	157,798
BALANCE, Shares at Sep. 30, 2017	24,472,320
Cumulative effect of accounting change		(17)		17
BALANCE at Dec. 31, 2017	$ 294	113,068	(6,127)	72,662	179,897	7,421	$ 187,318
BALANCE, Shares at Dec. 31, 2017	29,359,820						29,359,820
Net earnings				2,887	2,887	328	$ 3,215
Foreign currency translation adjustment			(3,105)		(3,105)	(430)	(3,535)
Amortization of stock-based compensation		613			613		613
Distribution to non-controlling interest						(572)	(572)
Fair value of non-controlling interest						445	445
Incremental direct costs of common stock issuance		(59)			(59)		(59)
Exercise of stock options		333			333		333
Exercise of stock options, shares	74,198
BALANCE at Sep. 30, 2018	$ 294	$ 113,955	$ (9,232)	$ 75,549	$ 180,566	$ 7,192	$ 187,758
BALANCE, Shares at Sep. 30, 2018	29,434,018						29,434,018