Segment And Geographic Information (Segment Information) (Details) $ in Thousands			1 Months Ended	3 Months Ended												12 Months Ended
		Oct. 31, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2016 USD ($) item		Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	[2]	Dec. 31, 2015 USD ($)		Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	[3]	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) segment item		Dec. 31, 2015 USD ($)		Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Net operating revenue				$ 36,279	[1]	$ 34,526	$ 35,201	$ 33,226		$ 31,930	[2]	$ 33,526	$ 37,875		$ 30,405	$ 139,234	[4]	$ 133,734	[4]	$ 120,048	[4]
Earnings before income taxes																15,600		14,645		418
Net earnings (loss) attributable to Century Casinos, Inc. shareholders				2,798	[1]	$ 1,887	$ 2,249	$ 2,281		352	[2]	$ 2,728	$ 6,597		$ 1,845	9,215		11,520		1,232
Interest expense (income), net																3,088		3,277		2,756
Income taxes (benefit)																1,787		1,654		1,507
Depreciation and amortization																8,349		7,999		7,835
Non-controlling interests																4,598		1,471		(2,321)
Non-cash stock-based compensation																759		1,641		1,028
(Gain) loss on foreign currency transactions, cost recovery income and other																(2,523)		(2,126)		(517)
Loss on disposition of fixed assets																330		382		631
Acquisition costs																159				381
Preopening expenses																		345
Other one-time (income) costs																		(3,365)	[5]	318	[6]
Adjusted EBITDA																25,762		22,798		12,850
Long-Lived Assets				$ 140,763						131,582						140,763		131,582		134,627
Capital expenditures																$ 16,646	[7]	18,875		17,856
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	[4]															$ 3,972		7,885		7,551
Earnings before income taxes																(7,133)		(4,064)		(7,660)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders																(5,044)		(1,192)		(6,385)
Interest expense (income), net																(22)		(13)		(37)
Income taxes (benefit)																(2,089)		(2,872)		(1,275)
Depreciation and amortization																382		398		667
Non-controlling interests																0		0		0
Non-cash stock-based compensation																759		1,641		1,028
(Gain) loss on foreign currency transactions, cost recovery income and other																19		3		18
Loss on disposition of fixed assets																0		30		3
Acquisition costs																159				266
Preopening expenses																		0
Other one-time (income) costs																		(3,365)	[5]	0	[6]
Adjusted EBITDA																(5,836)		(5,370)		(5,715)
Long-Lived Assets				$ 1,994						1,735						1,994		1,735		2,391
Capital expenditures																611	[7]	407		1,367
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	[4]															50,237		45,203		34,599
Earnings before income taxes																12,381		9,384		6,150
Net earnings (loss) attributable to Century Casinos, Inc. shareholders																8,448		7,432		6,446
Interest expense (income), net																3,037		3,160		2,473
Income taxes (benefit)																796		1,929		1,971
Depreciation and amortization																3,049		2,472		1,910
Non-controlling interests																3,137		23		(2,267)
Non-cash stock-based compensation																0		0		0
(Gain) loss on foreign currency transactions, cost recovery income and other																(2,232)		(685)		(193)
Loss on disposition of fixed assets																27		11		2
Acquisition costs																0				115
Preopening expenses																		345
Other one-time (income) costs																		0	[5]	(103)	[6]
Adjusted EBITDA																16,262		14,687		10,354
Long-Lived Assets				77,015						64,985						77,015		64,985		53,870
Capital expenditures																13,536	[7]	15,637		11,685
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	[4]															30,135		28,438		26,707
Earnings before income taxes																4,705		3,842		2,069
Net earnings (loss) attributable to Century Casinos, Inc. shareholders																2,890		2,381		1,283
Interest expense (income), net																2		1		1
Income taxes (benefit)																1,815		1,461		786
Depreciation and amortization																2,488		2,558		2,419
Non-controlling interests																0		0		0
Non-cash stock-based compensation																0		0		0
(Gain) loss on foreign currency transactions, cost recovery income and other																0		0		0
Loss on disposition of fixed assets																2		0		39
Acquisition costs																0				0
Preopening expenses																		0
Other one-time (income) costs																		0	[5]	0	[6]
Adjusted EBITDA																7,197		6,401		4,528
Long-Lived Assets				51,142						52,431						51,142		52,431		63,246
Capital expenditures																1,165	[7]	1,580		1,768
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	[4]															54,890		52,208		51,191
Earnings before income taxes																5,647		5,483		(141)
Net earnings (loss) attributable to Century Casinos, Inc. shareholders																2,921		2,899		(112)
Interest expense (income), net																71		129		319
Income taxes (benefit)																1,265		1,136		25
Depreciation and amortization																2,430		2,571		2,839
Non-controlling interests																1,461		1,448		(54)
Non-cash stock-based compensation																0		0		0
(Gain) loss on foreign currency transactions, cost recovery income and other																(310)		(1,444)		(342)
Loss on disposition of fixed assets																301		341		587
Acquisition costs																0				0
Preopening expenses																		0
Other one-time (income) costs																		0	[5]	421	[6]
Adjusted EBITDA																8,139		7,080		3,683
Long-Lived Assets				$ 10,612						$ 12,431						10,612		12,431		15,120
Capital expenditures																1,334	[7]	1,251		$ 3,036
Termination of Agreements [Member]
Segment Reporting Information [Line Items]
Net operating revenue			$ 3,400
Other one-time (income) costs																		$ 3,400
Apex Acquisition[Member]
Segment Reporting Information [Line Items]
Net operating revenue		$ 2,000
Net earnings (loss) attributable to Century Casinos, Inc. shareholders		$ 300
Capital expenditures																$ 9,500

[1] In October 2016, operations began at CSA.

[2] The Company has adjusted first quarter 2016 and fourth quarter 2015 for the correction of pari-mutuel revenue discussed in Note 1.

[3] 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.

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

[5] Other one-time income for Corporate and Other relates to $3.4 million for the termination agreement with Norwegian.

[6] 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

[7] Capital expenditures for Canada includes property and equipment of $9.5 million related to the Apex Acquisition (Note 3).