Employee Benefit Plans - Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 26, 2015	Dec. 27, 2014
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 943	$ 1,012	$ 1,886	$ 2,024
Expected return on assets	(1,068)	(1,226)	(2,136)	(2,452)
Amortization of net loss	608	504	1,216	1,008
Net periodic pension cost	483	290	966	580
SERP
Defined Benefit Plan Disclosure [Line Items]
Interest cost	148	185	296	370
Expected return on assets	0	0	0	0
Amortization of net loss	60	98	120	196
Net periodic pension cost	$ 208	$ 283	$ 416	$ 566