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Schedule of Operating and Finance Right-of-Use Assets and Lease Liabilities (Parenthetical) (Detail) $ in Thousands	Dec. 31, 2019 USD ($)
Leases [Abstract]
Finance lease assets, accumulated amortization	$ 36,384

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- Definition

Finance lease right of use asset, accumulated amortization.

+ References

No definition available.

+ Details

Name:	cnk_FinanceLeaseRightOfUseAssetAccumulatedAmortization
Namespace Prefix:	cnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_LeasesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration