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	4,529	4,529	2,536	7,065
Foreign currency translation adjustment		0	0	2,421	0	2,421	(2)	2,419
Amortization of stock-based compensation		0	381	0	0	381	0	381
Distribution to non-controlling interest		0	0	0	0	0	(1,626)	(1,626)
Exercise of stock options		$ 0	46	0	0	46	0	46
Exercise of stock options, shares		20,488
BALANCE at Jun. 30, 2016		$ 244	77,745	(10,262)	61,700	129,427	5,645	135,072
Shares, BALANCE at Jun. 30, 2016		24,434,571
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	3,962	3,962	1,008	$ 4,970
Foreign currency translation adjustment		0	0	3,613	0	3,613	947	4,560
Amortization of stock-based compensation		0	235	0	0	235	0	235
Distribution to non-controlling interest		0	0	0	0	0	(58)	(58)
Exercise of stock options		$ 0	32	0	0	32	0	32
Exercise of stock options, shares		17,036
BALANCE at Jun. 30, 2017		$ 245	78,424	(8,996)	70,365	140,038	8,285	$ 148,323
Shares, BALANCE at Jun. 30, 2017		24,468,618						24,468,618
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