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Investment in RealD - Additional Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Schedule of Equity Method Investments [Line Items] |  |  |
Number of options to purchase common stock |  |  | 1,085,828
Fair value of options earned |  | $ 3,402 | $ 18,909
Additional options earned to purchase common stock of RealD |  | 136,952 |
Exercise price of options | $ 0.00667 |  |
License agreement term | 6 years |  |
Cumulative net unrealized holding losses from accumulated other comprehensive income (loss) to earnings |  | 12,610 |
Number of shares owned in RealD | 1,222,780 |  |
Estimated fair value of company owned shares in RealD | 13,707 | 9,709 | 27,993
Unrealized holding loss | $ 3,998 | $ (21,694) | $ 9,084

X
- Definition Number of additional options to purchase common shares of RealD earned during period. + References No definition available. + Details
Name: | cnk_AdditionalOptionsToPurchaseCommonStockOfCompanyThree
Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Estimated fair value of RealD options earned under license agreement. + References No definition available. + Details
Name: | cnk_FairValueOfOptionsEarnedInCompanyThree
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
- Definition License Agreement Term + References No definition available. + Details
Name: | cnk_LicenseAgreementTerm
Namespace Prefix: | cnk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of RealD stock owned by the Company. + 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 The amount of other than temporary impairment recognized on available-for-sale securities held by the Company. + References No definition available. + Details
Name: | cnk_OtherThanTemporaryImpairmentOfAvailableForSaleSecurities
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration