Fair Value Measurements (Details 2) (Level 2, USD $) In Thousands, unless otherwise specified	Sep. 24, 2013	Dec. 25, 2012
Carrying Amount
Carrying amount and Fair value of financial instruments
Installment loans	$ 1,304	$ 1,473
Fair Value
Carrying amount and Fair value of financial instruments
Installment loans	$ 1,524	$ 1,752

Fair value portion of contractual obligation to pay money on demand or on fixed or determinable dates.

No definition available.

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