Segment Information (Segment Information) (Details) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2016 USD ($) item	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items]
Net operating revenue	[1]	$ 32,530	$ 30,405
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		1,894	1,845
Interest expense (income), net		761	664
Income taxes (benefit)		598	434
Depreciation and amortization		2,010	1,811
Non-controlling interests		330	(348)
Non-cash stock-based compensation		190	388
(Gain) loss on foreign currency transactions and other		(198)	(495)
Loss on disposition of fixed assets		26	122	$ (600)
Acquisition costs			0
Preopening expenses			345
Adjusted EBITDA		$ 5,611	4,766
Number of Co-CEOs | item		2
Number of reportable segments | item		3
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	[1]	$ 888	1,633
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		(963)	(1,550)
Interest expense (income), net		(3)	(3)
Income taxes (benefit)		(446)	(531)
Depreciation and amortization		85	149
Non-controlling interests		0	0
Non-cash stock-based compensation		190	388
(Gain) loss on foreign currency transactions and other		22	2
Loss on disposition of fixed assets		0	0
Acquisition costs			(36)
Preopening expenses			0
Adjusted EBITDA		(1,115)	(1,581)
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	[1]	12,298	8,445
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		1,648	2,138
Interest expense (income), net		749	632
Income taxes (benefit)		444	348
Depreciation and amortization		697	418
Non-controlling interests		(2)	(739)
Non-cash stock-based compensation		0	0
(Gain) loss on foreign currency transactions and other		(20)	(164)
Loss on disposition of fixed assets		2	0
Acquisition costs			36
Preopening expenses			345
Adjusted EBITDA		3,518	3,014
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	[1]	7,080	6,793
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		543	476
Interest expense (income), net		0	0
Income taxes (benefit)		333	369
Depreciation and amortization		626	634
Non-controlling interests		0	0
Non-cash stock-based compensation		0	0
(Gain) loss on foreign currency transactions and other		0	0
Loss on disposition of fixed assets		2	0
Acquisition costs			0
Preopening expenses			0
Adjusted EBITDA		1,504	1,479
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	[1]	12,264	13,534
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		666	781
Interest expense (income), net		15	35
Income taxes (benefit)		267	248
Depreciation and amortization		602	610
Non-controlling interests		332	391
Non-cash stock-based compensation		0	0
(Gain) loss on foreign currency transactions and other		(200)	(333)
Loss on disposition of fixed assets		22	122
Acquisition costs			0
Preopening expenses			0
Adjusted EBITDA		$ 1,704	$ 1,854

[1] Net operating revenue for Corporate and Other primarily relates to the Company's cruise ship operations.