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Summary of Potential Number of Shares Vesting under Restricted Stock Unit Awards (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Schedule of Restricted Stock Unit [Line Items] |  |  |
Number of units at IRR level of at least 8.5% | 65,832 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastEightPointFivePercent | 38,366 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastEightPointFivePercent | 50,981 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastEightPointFivePercent
Number of units at IRR level of at least 10.5% | 131,683 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastTenPointFivePercent | 76,741 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastTenPointFivePercent | 101,974 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastTenPointFivePercent
Number of units at IRR level of at least 12.5% | 197,515 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastTwelvePointFivePercent | 115,107 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastTwelvePointFivePercent | 152,955 cnk_NumberOfSharesVestingAtIrrTargetLevelOfAtLeastTwelvePointFivePercent
Fair value of units at IRR level of at least 8.5% | $ 1,879 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastEightPointFivePercent | $ 1,129 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastEightPointFivePercent | $ 1,103 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastEightPointFivePercent
Fair value of units at IRR level of at least 10.5% | 3,758 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTenPointFivePercent | 2,259 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTenPointFivePercent | 2,206 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTenPointFivePercent
Fair value of units at IRR level of at least 12.5% | $ 5,637 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTwelvePointFivePercent | $ 3,389 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTwelvePointFivePercent | $ 3,308 cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTwelvePointFivePercent

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- Definition Number of shares vesting at an IRR level of at least 8.5%. + References No definition available. + Details
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Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of shares vesting at an IRR level of at least 10.5%. + References No definition available. + Details
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Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
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- Definition Number of shares vesting at an IRR level of at least 12.5%. + References No definition available. + Details
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Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
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- Definition Grant date fair value of units that would vest at an IRR level of at least 8.5%. + References No definition available. + Details
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Namespace Prefix: | cnk_
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- Definition Grant date fair value of units that would vest at an IRR level of at least 10.5%. + References No definition available. + Details
Name: | cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTenPointFivePercent
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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X
- Definition Grant date fair value of units that would vest at an IRR level of at least 12.5%. + References No definition available. + Details
Name: | cnk_ValueOfSharesVestingAtIrrTargetLevelOfAtLeastTwelvePointFivePercent
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration