Commitments And Contingent Liabilities (Lease Commitments) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 13, 2012
Commitments and Contingencies Disclosure [Abstract]
Present value of master lease obligations for subleased properties	$ 122,926
Present value of lease obligations for franchisees under financial hardship	$ 2,538

For sublesed properties, the present value of the future minimum lease payments under the remaining master leases’ primary terms.

No definition available.

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Namespace Prefix:	ckr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant