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, 2014		$ 244	$ 76,169	$ (3,636)	$ 45,651	$ 118,428	$ 3,998	$ 122,426
Shares, BALANCE at Dec. 31, 2014		24,381,057
Net earnings		$ 0	0	0	11,520	11,520	1,471	12,991
Foreign currency translation adjustment		0	0	(8,912)	0	(8,912)	(941)	(9,853)
Amortization of stock-based compensation		0	1,641	0	0	1,641	0	1,641
Distribution to non-controlling interest		0	0	0	0	0	(507)	(507)
Exercise of stock options		$ 0	89	0	0	89	0	89
Exercise of stock options, shares		33,026
Conversion of CDR equity (note 1)		$ 0	(581)	(135)	0	(716)	716	0
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	9,215	9,215	4,598	13,813
Foreign currency translation adjustment		0	0	74	0	74	(464)	(390)
Amortization of stock-based compensation		0	759	0	0	759	0	759
Distribution to non-controlling interest		0	0	0	0	0	(2,483)	(2,483)
Exercise of stock options		$ 1	97	0	0	98	0	98
Exercise of stock options, shares		37,499
BALANCE at Dec. 31, 2016		$ 245	78,174	(12,609)	66,386	132,196	6,388	$ 138,584
Shares, BALANCE at Dec. 31, 2016		24,451,582						24,451,582
Net earnings		$ 0	0	0	6,259	6,259	1,632	$ 7,891
Foreign currency translation adjustment		0	0	6,482	0	6,482	1,462	7,944
Amortization of stock-based compensation		0	669	0	0	669	0	669
Distribution to non-controlling interest		0	0	0	0	0	(2,061)	(2,061)
Issuance of common stock, net of incremental direct costs		$ 49	34,210	0	0	34,259	0	34,259
Issuance of common stock, net of incremental direct costs, shares		4,887,500
Exercise of stock options		$ 0	32	0	0	32	0	$ 32
Exercise of stock options, shares		20,738						24,274
BALANCE at Dec. 31, 2017		$ 294	113,068	(6,127)	72,662	179,897	7,421	$ 187,318
Shares, BALANCE at Dec. 31, 2017		29,359,820						29,359,820
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 consolidated financial statements for further details on the adoption of this accounting standard