Annual report pursuant to Section 13 and 15(d)

Summary of Treasury Stock Activity (Detail)

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Summary of Treasury Stock Activity (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule of Treasury Stock [Line Items]      
Beginning Balance, Shares 3,694,935us-gaap_TreasuryStockShares 3,553,085us-gaap_TreasuryStockShares 3,391,592us-gaap_TreasuryStockShares
Restricted stock forfeitures 25,947us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited [1] 22,653us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited [1] 14,423us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited [1]
Restricted stock withholdings 336,253cnk_RestrictedStockWithholdings [2] 119,197cnk_RestrictedStockWithholdings [2] 147,070cnk_RestrictedStockWithholdings [2]
Ending Balance, Shares 4,057,135us-gaap_TreasuryStockShares 3,694,935us-gaap_TreasuryStockShares 3,553,085us-gaap_TreasuryStockShares
Beginning Balance, Cost $ 51,946us-gaap_TreasuryStockValue $ 48,482us-gaap_TreasuryStockValue $ 45,219us-gaap_TreasuryStockValue
Restricted stock forfeitures 0us-gaap_RestrictedStockAwardForfeitures [1] 0us-gaap_RestrictedStockAwardForfeitures [1] 0us-gaap_RestrictedStockAwardForfeitures [1]
Restricted stock withholdings 9,861cnk_CostOfSharesWithheldByCompanyToCoverTaxWithholdingsRelatedToRestrictedStockVesting [2] 3,464cnk_CostOfSharesWithheldByCompanyToCoverTaxWithholdingsRelatedToRestrictedStockVesting [2] 3,263cnk_CostOfSharesWithheldByCompanyToCoverTaxWithholdingsRelatedToRestrictedStockVesting [2]
Ending Balance, Cost $ 61,807us-gaap_TreasuryStockValue $ 51,946us-gaap_TreasuryStockValue $ 48,482us-gaap_TreasuryStockValue
[1] The Company repurchased forfeited and canceled restricted shares at a cost of $0.001 per share in accordance with the Company's Amended and Restated 2006 Long Term Incentive Plan.
[2] The Company withheld restricted shares as a result of the election by certain employees to satisfy their tax liabilities upon vesting in restricted stock. The Company determined the number of shares to be withheld based upon market values that ranged from $22.40 to $30.83 per share.