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Derivatives (Detail Textuals) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 04, 2014
Derivative [Line Items]
Changes associated with the ineffective interest rate swap	$ 1,676
Interest rate swap
Derivative [Line Items]
Fair value of interest swap liability	0	0
Changes associated with the ineffective interest rate swap	1,700
Amortization of remaining accumulated other comprehensive loss of ineffective swap	500
Portion of net income related to reducing fair value of ineffective interest rate swap liability	$ 2,200

Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset against a right to receive collateral under a master netting arrangement.

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