Derivatives (Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013		Mar. 31, 2012
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion	$ 20		$ (130)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion	(145)	[1],[2]	(156)	[1],[2]
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	362
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Cash Flow Hedge Ineffectiveness	0	[3]	0	[3]
Not Designated as Hedging Instrument [Member] | Interest Rate Swaption [Member] | Other Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income	$ 0	[4]	$ (14)	[4]

[1] The amount of loss expected to be reclassified from AOCIL into earnings during the next 12 months subsequent to March 30, 2013 is $362.

[2] The amount of gain (loss) reclassified from AOCIL is included in interest expense on the Company's Consolidated Condensed Statements of Operations.

[3] The amount of gain (loss) recognized in income on the ineffective portion of interest rate swaps, if any, is included in other (income) expense, net on the Company's Consolidated Condensed Statements of Operations.

[4] The amount of gain (loss) recognized in income for derivatives not designated as hedging instruments is included in other (income) expense, net on the Company's Consolidated Condensed Statements of Operations.