Condensed Consolidated Statement of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock Including Additional Paid in Capital [Member]	Pension Plans, Defined Benefit [Member]	Accumulated Translation Adjustment [Member]	Retained Earnings [Member]
Balance at Dec. 30, 2012	$ 466,905	$ 71,819	$ (5,030)	$ (57,584)	$ 457,700
Share balance at Dec. 30, 2012	27,295,488	27,295,488
Net income	16,429				16,429
Change in employee benefit plans, net of taxes	593		593
Net foreign currency translation adjustment	375			375
Stock Options Exercised, Shares	117,503	117,503
Stock Options Exercised, Value	1,515	1,515
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		82,965
Stock Based Compensation Expense	1,500	1,500
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	212	212
Dividends, Cash	(549)				(549)
Balance at Sep. 29, 2013	$ 486,980	$ 75,046	$ (4,437)	$ (57,209)	$ 473,580
Share balance at Sep. 29, 2013	27,495,956	27,495,956