Segment Information (Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net operating revenue	$ 120,048	$ 104,588
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	1,232	6,181
Interest expense (income), net	2,756	910
Income tax expense (benefit)	1,507	1,294
Depreciation and amortization	7,835	6,599
Net loss attributable to non-controlling interests	(2,321)	(106)
Non-cash stock-based compensation	1,028	33
Foreign currency (gains) losses	(517)	(318)
Loss on disposition of assets	828	570
Acquisition costs	381	49
Other one-time (income) expense items	121	(2,527)
Adjusted EBITDA	12,850	12,685
Current assets	30,163	32,360
Long lived assets	134,627	132,639
Total Assets	187,467	190,624
Property and equipment	187,263	183,371
Depreciation/Amortization	(52,636)	(50,732)
Property and equipment (net)	134,627	132,639
Capital expenditures	16,097	4,746
Canada [Member]
Segment Reporting Information [Line Items]
Net operating revenue	34,599	33,749
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	6,446	5,670
Interest expense (income), net	2,473	584
Income tax expense (benefit)	1,971	1,643
Depreciation and amortization	1,910	1,948
Net loss attributable to non-controlling interests	(2,267)	(112)
Non-cash stock-based compensation	0	0
Foreign currency (gains) losses	(193)	(41)
Loss on disposition of assets	2	3
Acquisition costs	115	0
Other one-time (income) expense items	(103)	(57)
Adjusted EBITDA	10,354	9,638
Long lived assets	53,870	54,859
Capital expenditures	11,190	692
United States [Member]
Segment Reporting Information [Line Items]
Net operating revenue	26,707	29,193
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	1,283	2,229
Interest expense (income), net	1	0
Income tax expense (benefit)	786	1,365
Depreciation and amortization	2,419	2,225
Net loss attributable to non-controlling interests	0	0
Non-cash stock-based compensation	0	0
Foreign currency (gains) losses	0	0
Loss on disposition of assets	39	24
Acquisition costs	0	0
Other one-time (income) expense items	0	0
Adjusted EBITDA	4,528	5,843
Long lived assets	63,246	57,957
Capital expenditures	834	1,405
Poland [Member]
Segment Reporting Information [Line Items]
Net operating revenue	51,191	34,817
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(112)	12
Interest expense (income), net	319	374
Income tax expense (benefit)	25	145
Depreciation and amortization	2,839	1,903
Net loss attributable to non-controlling interests	(54)	6
Non-cash stock-based compensation	0	0
Foreign currency (gains) losses	(342)	(204)
Loss on disposition of assets	785	505
Acquisition costs	0	0
Other one-time (income) expense items	223	8
Adjusted EBITDA	3,683	2,749
Long lived assets	15,120	18,091
Capital expenditures	2,742	1,093
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net operating revenue	7,551	6,829
Net earnings (loss) attributable to Century Casinos, Inc. shareholders	(6,385)	(1,730)
Interest expense (income), net	(37)	(48)
Income tax expense (benefit)	(1,275)	(1,859)
Depreciation and amortization	667	523
Net loss attributable to non-controlling interests	0	0
Non-cash stock-based compensation	1,028	33
Foreign currency (gains) losses	18	(73)
Loss on disposition of assets	2	38
Acquisition costs	266	49
Other one-time (income) expense items	1	(2,478)
Adjusted EBITDA	(5,715)	(5,545)
Long lived assets	2,391	1,732
Capital expenditures	$ 1,331	$ 1,555