Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Dec. 26, 2015	Dec. 31, 2016	Dec. 26, 2015
Defined Benefit Plan Disclosure [Line Items]
Loss on pension settlement	$ 0		$ 0	$ 6,010	$ 0
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	819		943	1,666	1,886
Expected return on assets	(789)		(1,068)	(1,649)	(2,136)
Amortization of net loss	635		608	1,350	1,216
Loss on pension settlement		$ 6,010		6,010	0
Net periodic benefit cost	665		483	7,377	966
SERP
Defined Benefit Plan Disclosure [Line Items]
Interest cost	136		148	272	296
Expected return on assets	0		0	0	0
Amortization of net loss	117		60	234	120
Loss on pension settlement				0	0
Net periodic benefit cost	$ 253		$ 208	$ 506	$ 416