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Investment in RealD (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010
Rollforward of investment in RealD |  |
Ending Balance | $ 9,709 | $ 27,993
Investment in Real D [Member] |  |
Rollforward of investment in RealD |  |
Beginning Balance | 27,993 | 0
Fair value of options earned | 3,402 | 18,909
Unrealized holding gain (loss) | (21,694) | 9,084
Exercise of options at $0.00667 per share | 8 |
Ending Balance | $ 9,709 | $ 27,993

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- Definition Fair value of Real D 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

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- 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

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- Definition Exercise price per share to purchase common stock of Real D. + References No definition available. + Details
Name: | cnk_PerShareExercisePriceOfVestedOptionsToPurchaseCommonStockOfCompanyThree
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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

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- Definition This item represents the pretax change in net unrealized holding gain (loss) on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration