Goodwill and Other Intangibles - Schedule of Changes in the Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill gross, Beginning Balance	$ 112,617us-gaap_GoodwillGross	$ 82,817us-gaap_GoodwillGross
Goodwill gross, Additions	51,138us-gaap_GoodwillAcquiredDuringPeriod	29,800us-gaap_GoodwillAcquiredDuringPeriod
Goodwill gross, Impairments	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Goodwill gross, Ending Balance	163,755us-gaap_GoodwillGross	112,617us-gaap_GoodwillGross
Accumulated impairment losses, Beginning Balance	(38,240)	(38,240)
Accumulated impairment losses, Additions	0ckec_GoodwillAccumulatedAdditions	0ckec_GoodwillAccumulatedAdditions
Accumulated impairment losses Impairments	0	0
Accumulated impairment losses, Ending Balance	(38,240)	(38,240)
Goodwill Net, Beginning balance	74,377us-gaap_Goodwill	44,577us-gaap_Goodwill
Goodwill Net, Additions	51,138us-gaap_GoodwillAcquiredDuringPeriod	29,800us-gaap_GoodwillAcquiredDuringPeriod
Goodwill Net, Impairments	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Goodwill Net, Ending balance	$ 125,515us-gaap_Goodwill	$ 74,377us-gaap_Goodwill

Goodwill accumulated additions.

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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-Publisher FASB

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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-Publisher FASB

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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Subparagraph (a,h)

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 1

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- Definition

The amount of an adjustment to a previously reported goodwill impairment charge, which will be recognized in the subsequent reporting period.

+ References

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-Publisher FASB

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB

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