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Summary of Treasury Stock Activity (Parenthetical) (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Schedule of Treasury Stock [Line Items] |  |  |
Common stock repurchased value as result of restricted stock forfeitures and canceled | $ 0.001 cnk_CommonStockRepurchasedValueAsResultOfRestrictedStockForfeituresAndCanceled | $ 0.001 cnk_CommonStockRepurchasedValueAsResultOfRestrictedStockForfeituresAndCanceled | $ 0.001 cnk_CommonStockRepurchasedValueAsResultOfRestrictedStockForfeituresAndCanceled
Minimum |  |  |
Schedule of Treasury Stock [Line Items] |  |  |
Market Value of Restricted Shares | $ 22.40 cnk_MarketValueOfRestrictedSharesWithheld / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 22.40 cnk_MarketValueOfRestrictedSharesWithheld / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 22.40 cnk_MarketValueOfRestrictedSharesWithheld / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum |  |  |
Schedule of Treasury Stock [Line Items] |  |  |
Market Value of Restricted Shares | $ 30.83 cnk_MarketValueOfRestrictedSharesWithheld / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 30.83 cnk_MarketValueOfRestrictedSharesWithheld / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 30.83 cnk_MarketValueOfRestrictedSharesWithheld / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition Common stock repurchased value as result of restricted stock forfeitures and canceled. + References No definition available. + Details
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- Definition Market value per share of restricted shares withheld by company related to restricted stock vesting + References No definition available. + Details
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Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Details
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- Details
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |