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Retirement Plan - Schedule of Net Periodic Benefit Costs (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 24, 2016
Mar. 26, 2015
Mar. 24, 2016
Mar. 26, 2015
Compensation and Retirement Disclosure [Abstract]        
Service cost $ 123 $ 96 $ 368 $ 289
Interest cost 211 161 633 482
Amortization of prior service cost 239 239 718 718
Amortization of loss 12 0 37 0
Net periodic benefit cost $ 585 $ 496 $ 1,756 $ 1,489