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Investment in Marketable Securities - RealD (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Investment in Marketable Securities - RealD (Textual) [Abstract]
Number of options to purchase common stock	1,222,780
Exercise price of options, shares	$ 0.00667
Number of shares owned in RealD	1,222,780
Estimated fair value of Company owned shares in RealD	$ 18,293	$ 9,709
Unrealized holding gain	$ 8,584

X

- Definition

Aggregate exercise price of options to purchase common shares of real D.

+ References

No definition available.

+ Details

Name:	cnk_ExercisePriceOfVestedOptionsToPurchaseCommonStockOfCompanyThree
Namespace Prefix:	cnk_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This item represents the fair value of the entity's investment in real d which is in the form of equity securities. The entity has classified these equity securities as available for sale.

+ References

No definition available.

+ Details

Name:	cnk_InvestmentInCompanyThree
Namespace Prefix:	cnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	cnk_InvestmentInCompanyThreeTextualAbstract
Namespace Prefix:	cnk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares owned in real d.

+ References

No definition available.

+ Details

Name:	cnk_NumberOfSharesOwnedInCompanyThree
Namespace Prefix:	cnk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of options to purchase common shares of RealD in which the company has vested.

+ References

No definition available.

+ Details

Name:	cnk_NumberOfVestedOptionsToPurchaseCommonStockOfCompanyThree
Namespace Prefix:	cnk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant