Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012
Deferred tax liabilities
Depreciation and amortization (including differences in the basis of acquired assets)	$ (9,125)	$ (8,204)
Total deferred tax liabilities	(9,125)	(8,204)
Deferred tax assets
Inventory and other reserves	2,329	2,152
Pension benefit obligation	19,055	40,240
Net operating loss and capital loss carryforwards	88,784	85,080
Total gross deferred tax assets	110,168	127,472
Less valuation allowance	(110,090)	(127,386)
Deferred tax assets less valuation allowance	78	86
Net deferred tax asset (liability)	$ (9,047)	$ (8,118)