Impairment of Long-Lived Assets - Additional Information (Detail) $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($)	Sep. 30, 2017
Impairment Or Disposal Of Tangible Assets Disclosure [Abstract]
Estimated aggregate fair value of long-lived assets impaired during current period	$ 178
Multiple of cash flows used to estimate fair value of long-lived asset	6.5	6.5

Estimated aggregate fair value of long lived assets impaired during current period.

No definition available.

Name:	cnk_EstimatedAggregateFairValueOfLongLivedAssetsImpairedDuringCurrentPeriod
Namespace Prefix:	cnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration