Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Apr. 07, 2013
Impairment of long-lived assets		$ 0
Percentage of net win retained by Alberta Gaming and Liquor Commission	85.00%
Percentage of net win retained by Alberta Gaming and Liquor Commission which is allocated to licensed charities	15.00%
Percentage of casino net win allocated to charities for table games excluding poker and craps	50.00%
Percentage of casino net win allocated to charities for poker and craps	25.00%
Advertising costs	1,400,000us-gaap_AdvertisingExpense	1,400,000us-gaap_AdvertisingExpense
Deferred tax asset resulting from net operating losses in the U.S.	6,100,000
Deferred tax asset resulting from Calgary Casino purchase	3,500,000cnty_DeferredTaxAssetsAcquisitions
Deferred tax asset resulting from Century Casinos Europe subsidiary	100,000
Outstanding balance of promotional balance liability	900,000
Casinos Poland Ltd [Member]
Impairment of long-lived assets	$ 500,000
Ownership percentage	33.30%		33.30%

Deferred tax assets, acquisitions

No definition available.

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- Definition

This element represents the outstanding balance of the promotional allowance liability. Promotional allowances are the estimated retail value of accommodations, food and beverage, and other services furnished to guests without charge.

+ References

No definition available.

+ Details

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- Definition

Percentage of casino net win allocated to charities for poker and craps

+ References

No definition available.

+ Details

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- Definition

Percentage of casino net win allocated to charities for table games excluding poker and craps.

+ References

No definition available.

+ Details

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- Definition

Percentage of net win retained by government agency.

+ References

No definition available.

+ Details

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- Definition

Percentage of net win retained by government agency which is allocated to licensed charities.

+ References

No definition available.

+ Details

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 720

-SubTopic 35

-Section 50

-Paragraph 1

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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-Publisher FASB

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-Paragraph 20

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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-Publisher FASB

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-Glossary Impairment

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