Accumulated Other Comprehensive Income (Loss) - Reclassification from accumulated other comprehensive income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 31, 2016	Dec. 26, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate swap contracts	$ (2,065)	$ (1,656)	$ (4,026)	$ (3,283)
Loss (gain) on derivative financial instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amounts reclassified, net of tax	(242)	37	(417)	70
Pension benefit liabilities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amounts reclassified, net of tax	(477)	(422)	(4,769)	(845)
Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amounts reclassified, net of tax	719	385	5,186	775
Reclassification out of accumulated other comprehensive income | Loss (gain) on derivative financial instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (benefit) expense	(144)	21	(258)	41
Total amounts reclassified, net of tax	242	(37)	417	(70)
Reclassification out of accumulated other comprehensive income | Pension benefit liabilities, amortization of net loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI before tax	762	676	1,604	1,353
Reclassification out of accumulated other comprehensive income | Pension benefit liabilities, loss on pension settlement
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI before tax	0	0	6,010	0
Reclassification out of accumulated other comprehensive income | Pension benefit liabilities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (benefit) expense	(285)	(254)	(2,845)	(508)
Total amounts reclassified, net of tax	477	422	4,769	845
Reclassification out of accumulated other comprehensive income | Interest rate swap contracts | Loss (gain) on derivative financial instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate swap contracts	$ 386	$ (58)	$ 675	$ (111)