Segment and Geographic Information (Segment Information) (Details) $ in Thousands	1 Months Ended	3 Months Ended										12 Months Ended
	Apr. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) item	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	[1]	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	[2]	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) segment item		Dec. 31, 2014 USD ($)		Dec. 31, 2013 USD ($)		Apr. 30, 2013
Segment Reporting Information [Line Items]
Net operating revenue		$ 32,627	$ 33,526	$ 37,875		$ 30,405	$ 31,259	$ 28,123	$ 31,555		$ 29,110	$ 134,431		$ 120,048		$ 104,588
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		$ 739	$ 2,728	$ 6,597		$ 1,845	(230)	$ 796	$ 156		$ 510	11,907		1,232		6,181
Income tax expense (benefit)												1,835		1,507		1,294
Depreciation and amortization												7,999		7,835		6,599
Non-controlling interests												(1,600)		2,321		106
Non-cash stock-based compensation												1,641		1,028		33
(Gain) loss on foreign currency transactions and other												$ (2,126)		(517)		(318)
Number of Co-CEOs | item		2										2
Number of reportable segments | segment												3
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue												$ 7,885	[3]	7,551	[4]	6,829	[5]
Net earnings (loss) attributable to Century Casinos, Inc. shareholders												(1,192)		(6,385)		(1,730)
Interest expense (income), net												(13)		(37)		(48)
Income tax expense (benefit)												(2,872)		(1,275)		(1,859)
Depreciation and amortization												398		667		523
Non-controlling interests												0		0		0
Non-cash stock-based compensation												1,641		1,028		33
(Gain) loss on foreign currency transactions and other												3		18		(73)
Loss on disposition of fixed assets												30		3		38
Acquisition costs												0		266		49
Preopening expenses												0
Other one-time (income) costs												(3,365)	[6]	0	[7]	(2,478)	[8]
Adjusted EBITDA												(5,370)		(5,715)		(5,545)
Long-Lived Assets		$ 1,735					2,391					1,735		2,391		1,732
Capital expenditures												407		1,331		1,555
Consolidated Entities [Member]
Segment Reporting Information [Line Items]
Net operating revenue												134,431	[3]	120,048	[4]	104,588	[5]
Net earnings (loss) attributable to Century Casinos, Inc. shareholders												11,907		1,232		6,181
Interest expense (income), net												3,277		2,756		910
Income tax expense (benefit)												1,835		1,507		1,294
Depreciation and amortization												7,999		7,835		6,599
Non-controlling interests												1,600		(2,321)		(106)
Non-cash stock-based compensation												1,641		1,028		33
(Gain) loss on foreign currency transactions and other												(2,126)		(517)		(318)
Loss on disposition of fixed assets												382		631		570
Acquisition costs												0		381		49
Preopening expenses												345
Other one-time (income) costs												(3,365)	[6]	318	[7]	(2,527)	[8]
Adjusted EBITDA												23,495		12,850		12,685
Long-Lived Assets		131,582					134,627					131,582		134,627		132,639
Capital expenditures												18,875		16,097		$ 4,745
Casinos Poland Ltd [Member]
Segment Reporting Information [Line Items]
Ownership interest																33.30%		33.30%
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue												45,900	[3]	34,599	[4]	$ 33,749	[5]
Net earnings (loss) attributable to Century Casinos, Inc. shareholders												7,819		6,446		5,670
Interest expense (income), net												3,160		2,473		584
Income tax expense (benefit)												2,110		1,971		1,643
Depreciation and amortization												2,472		1,910		1,948
Non-controlling interests												152		(2,267)		(112)
Non-cash stock-based compensation												0		0		0
(Gain) loss on foreign currency transactions and other												(685)		(193)		(41)
Loss on disposition of fixed assets												11		2		3
Acquisition costs												0		115		0
Preopening expenses												345
Other one-time (income) costs												0	[6]	(103)	[7]	(57)	[8]
Adjusted EBITDA												15,384		10,354		9,638
Long-Lived Assets		64,985					53,870					64,985		53,870		54,859
Capital expenditures												15,637		11,190		692
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue												28,438	[3]	26,707	[4]	29,193	[5]
Net earnings (loss) attributable to Century Casinos, Inc. shareholders												2,381		1,283		2,229
Interest expense (income), net												1		1		0
Income tax expense (benefit)												1,461		786		1,365
Depreciation and amortization												2,558		2,419		2,225
Non-controlling interests												0		0		0
Non-cash stock-based compensation												0		0		0
(Gain) loss on foreign currency transactions and other												0		0		0
Loss on disposition of fixed assets												0		39		24
Acquisition costs												0		0		0
Preopening expenses												0
Other one-time (income) costs												0	[6]	0	[7]	0	[8]
Adjusted EBITDA												6,401		4,528		5,843
Long-Lived Assets		52,431					63,246					52,431		63,246		57,957
Capital expenditures												1,580		834		1,405
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue												52,208	[3]	51,191	[4]	34,817	[5]
Net earnings (loss) attributable to Century Casinos, Inc. shareholders												2,899		(112)		12
Interest expense (income), net												129		319		374
Income tax expense (benefit)												1,136		25		145
Depreciation and amortization												2,571		2,839		1,903
Non-controlling interests												1,448		(54)		6
Non-cash stock-based compensation												0		0		0
(Gain) loss on foreign currency transactions and other												(1,444)		(342)		(204)
Loss on disposition of fixed assets												341		587		505
Acquisition costs												0		0		0
Preopening expenses												0
Other one-time (income) costs												0	[6]	421	[7]	8	[8]
Adjusted EBITDA												7,080		3,683		2,749
Long-Lived Assets		$ 12,431					$ 15,120					12,431		15,120		18,091
Capital expenditures												1,251		$ 2,742		$ 1,093
Termination of Concession Agreements with Oceania and Regent [Member]
Segment Reporting Information [Line Items]
Net operating revenue	$ 3,400											$ 3,400
Century Downs Racetrack And Casino [Member]
Segment Reporting Information [Line Items]
Ownership interest																15.00%

[1] In April 2015, operations began at CDR's casino and racetrack. In June 2015, the Company recorded $3.4 million in net operating revenue and net earnings from the consideration for the early termination of its Oceania and Regent concession agreements.

[2] In April 2013, the Company purchased an additional 33.3% ownership interest in CPL and began consolidating CPL as a majority-owned subsidiary for which it has a controlling financial interest. The Company recorded a gain on bargain purchase of $2.1 million associated with the purchase

[3] Net operating revenue for Corporate and Other primarily relates to the Company's cruise ship operations, including the $3.4 million in net operating revenue recognized in connection with the termination of the concession agreements with Oceania and Regent

[4] Net operating revenue for Corporate and Other

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

[6] Other one-time (income) costs for Corporate and Other were attributable to the termination of the Oceania and Regent concession agreements

[7] Other one-time (income) costs for Canada were insurance proceeds received and for Poland were the costs associated with relocating the Poznan casino to Hotel Andersia and the write-off of the Sosnowiec casino license

[8] Other one-time (income) costs for Canada were insurance proceeds, for Poland was an impairment of long-lived assets and for Corporate and Other were attributable to the gain on bargain purchase recorded for the additional 33.3% ownership interest in CPL and the 15% ownership interest in CDR.