This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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Namespace Prefix:	cnk
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reconciliation of beginning and ending balance for assets and liabilities measured at fair value.

+ Details

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Namespace Prefix:	cnk
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Balance Type:	na
Period Type:	duration

- Definition

This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

This element represents a certain statement of financial position liability caption which represents a class of liabilities, or which may include an individual liability, measured at fair value on a recurring basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c(1)

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c(1)

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c(1)

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c(1)

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
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Fair Value Measurements (Details) (USD $) In Thousands	6 Months Ended
Fair Value Measurements (Details) (USD $) In Thousands	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Current Liabilities [Member] \| Interest Rate Swap [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	$ (1,266)		$ (2,928)
Current Liabilities [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	0		0
Current Liabilities [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	0		0
Current Liabilities [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	(1,266)		(2,928)
Long-Term Liabilities [Member] \| Interest Rate Swap [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	(9,686)		(13,042)
Long-Term Liabilities [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	0		0
Long-Term Liabilities [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	0		0
Long-Term Liabilities [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap liabilities	(9,686)		(13,042)
Long-Term Asset [Member] \| Interest Rate Swap [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap assets	2,943		8,955
Long-Term Asset [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap assets	0		0
Long-Term Asset [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap assets	0		0
Long-Term Asset [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair value measurement of assets and liabilities on recurring basis
Interest rate swap assets	2,943		8,955
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair value measurement of assets and liabilities on recurring basis
Investment in Real D	28,600		27,993
Fair Value, Inputs, Level 1 [Member]
Fair value measurement of assets and liabilities on recurring basis
Investment in Real D	28,600		0
Fair Value, Inputs, Level 2 [Member]
Fair value measurement of assets and liabilities on recurring basis
Investment in Real D	0		27,993
Fair Value, Inputs, Level 3 [Member]
Fair value measurement of assets and liabilities on recurring basis
Investment in Real D	0		0
Reconciliation Of Beginning And Ending Balance For Assets And Liabilities Measured At Fair Value [Abstract]
Beginning balance - Liabilities	(15,970)	(18,524)
Beginning balance - Assets	8,955	0
Total gain (loss) included in accumulated other comprehensive income (loss), Liabilities	4,690	(733)
Total gain (loss) included in accumulated other comprehensive income (loss), Assets	(6,012)
Total gain (loss) included in earnings, Liabilities	328
Total gain (loss) included in earnings, Assets	0
Ending balance - Liabilities	(10,952)	(19,257)
Ending balance - Assets	$ 2,943	$ 0