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Retirement Plan - Schedule of Net Benefit Costs (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 28, 2013
Mar. 29, 2012
Mar. 28, 2013
Mar. 29, 2012
Compensation And Retirement Disclosure [Abstract]        
Service cost $ 86 $ 61 $ 257 $ 182
Interest cost 142 150 427 450
Amortization of prior service cost 239 239 718 718
Amortization of gain   (46)   (139)
Net periodic benefit cost $ 467 $ 404 $ 1,402 $ 1,211