Description Of Business And Basis Of Presentation (Impact Of Corrections On Consolidated Financial Statements) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other		$ 2,575	$ 3,737
Gross revenue		38,840	35,233
Net operating revenue	[1]	36,398	33,227
Earnings from operations		4,490	4,082
Earnings before income taxes		3,792	3,519
Income tax expense (benefit)		(995)	(779)
Non-controlling interest		7,352		$ 6,388
Net earnings		2,797	2,740
Net earnings attributable to non-controlling interests		(638)	(459)
Net earnings attributable to Century Casinos, Inc. shareholders		2,159	$ 2,281
Basic and Diluted			$ 0.09
Foreign currency translation adjustments		1,560	$ 3,729
Other comprehensive loss		1,560	3,729
Comprehensive income		4,357	6,469
Balance at January 1, 2016		143,018	133,489	$ 138,584	$ 126,787
Foreign currency translation adjustments		(384)	(382)
Comprehensive income attributable to Century Casinos, Inc. shareholders		3,335	5,628
Receivables, net		1,569	57
Taxes payable		(435)	(179)
Net cash provided by operating activities		5,366	3,291
Effect of Exchange Rate Changes on Cash		306	660
Non-controlling interests		638	459
Adjusted EBITDA		6,711	6,308
Canada [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net operating revenue	[1]	13,160	12,995
Earnings before income taxes		2,113	2,786
Income tax expense (benefit)		(547)	(625)
Net earnings attributable to non-controlling interests		(96)	(127)
Net earnings attributable to Century Casinos, Inc. shareholders		1,470	2,035
Non-controlling interests		96	127
Adjusted EBITDA		3,882	4,215
As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other			3,040
Gross revenue			34,536
Net operating revenue			32,530
Earnings from operations			3,385
Earnings before income taxes			2,822
Income tax expense (benefit)			(598)
Net earnings			2,224
Net earnings attributable to non-controlling interests			(330)
Net earnings attributable to Century Casinos, Inc. shareholders			$ 1,894
Basic and Diluted			$ 0.08
Foreign currency translation adjustments			$ 3,757
Other comprehensive loss			3,757
Comprehensive income			5,981
Balance at January 1, 2016					127,275
Foreign currency translation adjustments			(389)
Comprehensive income attributable to Century Casinos, Inc. shareholders			5,262
Receivables, net			716
Taxes payable			(350)
Net cash provided by operating activities			3,263
Effect of Exchange Rate Changes on Cash			688
Non-controlling interests			330
As Previously Reported [Member] | Canada [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net operating revenue			12,298
Income tax expense (benefit)			(444)
Net earnings attributable to non-controlling interests			2
Net earnings attributable to Century Casinos, Inc. shareholders			1,648
Non-controlling interests			(2)
Adjusted EBITDA			3,518
Correction [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other			697
Gross revenue			697
Net operating revenue			697
Earnings from operations			697
Earnings before income taxes			697
Income tax expense (benefit)			(181)
Net earnings			516
Net earnings attributable to non-controlling interests			(129)
Net earnings attributable to Century Casinos, Inc. shareholders			$ 387
Basic and Diluted			$ 0.01
Foreign currency translation adjustments			$ (28)
Other comprehensive loss			(28)
Comprehensive income			488
Balance at January 1, 2016					(488)
Foreign currency translation adjustments			7
Comprehensive income attributable to Century Casinos, Inc. shareholders			366
Receivables, net			(659)
Taxes payable			171
Net cash provided by operating activities			28
Effect of Exchange Rate Changes on Cash			(28)
Non-controlling interests			129
Correction [Member] | Canada [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net operating revenue			697
Income tax expense (benefit)			(181)
Net earnings attributable to non-controlling interests			(129)
Net earnings attributable to Century Casinos, Inc. shareholders			387
Non-controlling interests			129
Adjusted EBITDA			697
Accumulated Other Comprehensive Income (Loss) [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings		0	0
Foreign currency translation adjustments		1,176	3,347
Balance at January 1, 2016		(11,433)	(9,336)		(12,683)
Accumulated Other Comprehensive Income (Loss) [Member] | As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Foreign currency translation adjustments			3,368
Balance at January 1, 2016					(12,704)
Accumulated Other Comprehensive Income (Loss) [Member] | Correction [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Foreign currency translation adjustments			(21)
Balance at January 1, 2016					21
Retained Earnings [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings		2,159	2,281
Foreign currency translation adjustments		0	0
Balance at January 1, 2016		68,562	59,452		57,171
Retained Earnings [Member] | As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings			1,894
Balance at January 1, 2016					57,558
Retained Earnings [Member] | Correction [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings			387
Balance at January 1, 2016					(387)
Total Century Casinos Shareholders' Equity [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings		2,159	2,281
Foreign currency translation adjustments		1,176	3,347
Balance at January 1, 2016		135,666	127,911		122,050
Total Century Casinos Shareholders' Equity [Member] | As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings			1,894
Foreign currency translation adjustments			3,368
Balance at January 1, 2016					122,416
Total Century Casinos Shareholders' Equity [Member] | Correction [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings			387
Foreign currency translation adjustments			(21)
Balance at January 1, 2016					(366)
Noncontrolling Interest [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings		638	459
Foreign currency translation adjustments		384	382
Balance at January 1, 2016		$ 7,352	5,578		4,737
Noncontrolling Interest [Member] | As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings			330
Foreign currency translation adjustments			389
Balance at January 1, 2016					4,859
Noncontrolling Interest [Member] | Correction [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings			129
Foreign currency translation adjustments			$ (7)
Balance at January 1, 2016					$ (122)

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