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 Interest [Member]	Total
BALANCE at Dec. 31, 2015		$ 244	$ 77,318	$ (12,683)	$ 57,171	$ 122,050	$ 4,737	$ 126,787
Shares, BALANCE at Dec. 31, 2015		24,414,083
Net earnings		$ 0	0	0	6,417	6,417	3,062	9,479
Foreign currency translation adjustment		0	0	2,580	0	2,580	233	2,813
Amortization of stock-based compensation		0	573	0	0	573	0	573
Distribution to non-controlling interest		0	0	0	0	0	(1,896)	(1,896)
Exercise of stock options		$ 0	97	0	0	97	0	97
Exercise of stock options, shares		30,488
BALANCE at Sep. 30, 2016		$ 244	77,988	(10,103)	63,588	131,717	6,136	137,853
Shares, BALANCE at Sep. 30, 2016		24,444,571
BALANCE at Dec. 31, 2016		$ 245	78,174	(12,609)	66,386	132,196	6,388	138,584
BALANCE at Dec. 31, 2016								$ 138,584
Shares, BALANCE at Dec. 31, 2016		24,451,582						24,451,582
Net earnings		$ 0	0	0	11,592	11,592	1,329	$ 12,921
Foreign currency translation adjustment		0	0	6,114	0	6,114	1,185	7,299
Amortization of stock-based compensation		0	419	0	0	419	0	419
Distribution to non-controlling interest		0	0	0	0	0	(1,457)	(1,457)
Exercise of stock options		$ 0	32	0	0	32	0	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
Shares, BALANCE at Sep. 30, 2017		24,472,320						24,472,320
Cumulative effect of accounting change	[1]	$ 0	$ (17)	$ 0	$ 17	$ 0	$ 0	$ 0

[1] Cumulative effect of accounting change relates to the adoption of Accounting Standards Update 2016-09. See Note 2 of the unaudited condensed consolidated financial statements for further details on the adoption of this accounting standard