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Investment in RealD (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2012 | Mar. 31, 2011 | Dec. 31, 2011
Investment in Marketable Securities - Real D (Textual) [Abstract] |  |  |
Exercise price of options |  | $ 0.00667 |
Number of options to purchase common stock | 1,222,780 |  |
Number of shares owned in RealD | 1,222,780 |  |
Estimated fair value of company owned shares in RealD | $ 16,508 |  | $ 9,709
Unrealized holding loss | $ 6,799 |  |

X
- Definition Aggregate exercise price of options to purchase common shares of Real D. + References No definition available. + Details
Name: | cnk_ExercisePriceOfVestedOptionsToPurchaseCommonStockOfCompanyThree
Namespace Prefix: | cnk_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the fair value of the entity's investment in Real D, which is in the form of equity securities. The entity has classified these equity securities as available-for-sale. + References No definition available. + Details
Name: | cnk_InvestmentInCompanyThree
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | cnk_InvestmentInCompanyThreeTextualAbstract
Namespace Prefix: | cnk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares owned in RealD. + References No definition available. + Details
Name: | cnk_NumberOfSharesOwnedInCompanyThree
Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options to purchase common shares of RealD in which the company has vested. + References No definition available. + Details
Name: | cnk_NumberOfVestedOptionsToPurchaseCommonStockOfCompanyThree
Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant