Description Of Business And Basis Of Presentation (Narrative) (Details) £ in Millions, CAD in Millions			1 Months Ended	3 Months Ended		5 Months Ended	9 Months Ended				24 Months Ended
	Jun. 20, 2017 GBP (£)	Jun. 20, 2017 USD ($)	May 31, 2017 item	Sep. 30, 2017 USD ($) item	Sep. 30, 2016 USD ($)	Feb. 28, 2017 USD ($)	Sep. 30, 2017 GBP (£) mi² item	Sep. 30, 2017 CAD mi² item	Sep. 30, 2017 USD ($) mi² item	Sep. 30, 2016 USD ($)	May 31, 2017 USD ($)	Jun. 20, 2017 USD ($)	Oct. 31, 2014	Dec. 31, 2013
Description Of Business And Basis Of Presentation [Line Items]
Number of ship-based casinos				14			14	14	14
Number of cruise ship owners							4	4	4
Number of slot machines							550	550	550
Payments for acquisition | $						$ 24,289,000
Distance from CRA and CSA | mi²							30	30	30
Estimated project costs								CAD 60	$ 48,100,000
Period of Century Mile project							15 months	15 months	15 months
Adjusted EBITDA | $				$ 7,547,000	$ 6,271,000				$ 20,680,000	$ 19,439,000
Minimum [Member]
Description Of Business And Basis Of Presentation [Line Items]
Number of races per year							100	100	100
Correction of Prior Year Balances [Member]
Description Of Business And Basis Of Presentation [Line Items]
Corrections to adjusted EBITDA | $										700,000
Adjusted EBITDA | $										19,400,000
Correction of Prior Year Balances [Member] | As Previously Reported [Member]
Description Of Business And Basis Of Presentation [Line Items]
Adjusted EBITDA | $										$ 18,700,000
Percentage Of CBS Owned By CCE [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage				75.00%			75.00%	75.00%	75.00%
Lot Polish Airlines Invesment [Member]
Description Of Business And Basis Of Presentation [Line Items]
Owned by noncontrolling interest				33.30%			33.30%	33.30%	33.30%					33.30%
Casinos Poland Ltd [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage				66.60%			66.60%	66.60%	66.60%
Number of casinos owned and operated							6	6	6
Century Bets! Inc. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Owned by noncontrolling interest				25.00%			25.00%	25.00%	25.00%
Saw Close Casino Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Total consideration	£ 0.6	$ 800,000
Liabilities assumed	0.2											$ 300,000
Payments for acquisition	£ 0.1	$ 100,000
Estimated project costs							£ 5.0		$ 6,700,000
Century Casinos Europe GmbH [Member] | Percentage Of Century Downs Racetrack Owned By Century Casinos Europe [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage				75.00%			75.00%	75.00%	75.00%
Century Casinos Europe GmbH [Member] | Saw Close Casino Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership interest				100.00%			100.00%	100.00%	100.00%
Oceania Cruises [Member]
Description Of Business And Basis Of Presentation [Line Items]
Term of consulting agreement							2 years	2 years	2 years
Consulting Fee | $											$ 2,000,000
Consulting Fee payable per quarter | $											$ 250,000
TUI Cruises, Mein Schiff 6 [Member]
Description Of Business And Basis Of Presentation [Line Items]
Number of passengers			2,500
Hamilton Properties Ltd. [Member]
Description Of Business And Basis Of Presentation [Line Items]
Number of slot machines							200	200	200
Number of table games							17	17	17
Number of electronic table games							1	1	1
Loan provided for purchase of equipment | $									$ 5,000,000
Century Downs Racetrack And Casino [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership percentage				75.00%			75.00%	75.00%	75.00%
Owned by noncontrolling interest				25.00%			25.00%	25.00%	25.00%
Mendoza Central Entretenimientos S. A. [Member] | Century Casinos Europe GmbH [Member]
Description Of Business And Basis Of Presentation [Line Items]
Ownership interest				7.50%			7.50%	7.50%	7.50%				7.50%