Business Acquisitions, Goodwill and Other Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 30, 2016	Dec. 25, 2015	Dec. 30, 2016	Dec. 25, 2015	Jun. 30, 2016
Indentifiable Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 2,617	$ 1,076	$ 5,333	$ 1,916
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	61,118		61,118		$ 61,118
Accumulated Amortization of Identifiable Intangible Assets	(20,908)		(20,908)		(15,575)
Finite-Lived Intangible Assets, Net	40,210		40,210		45,543
Indefinite-lived Intangible Assets
Indefinite-Lived Intangible Assets (Excluding Goodwill)	61,544		61,544		61,544
Intangible Assets Net Excluding Goodwill Accumulated Amortization	(20,908)		(20,908)		(15,575)
Intangible Assets, Net (Excluding Goodwill)	40,636		40,636		45,969
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2017	4,826		4,826
2018	9,183		9,183
2019	8,367		8,367
2020	7,821		7,821
2021	7,274		7,274
2022 and thereafter	2,739		2,739
Engineering licenses
Indefinite-lived Intangible Assets
Indefinite-Lived Intangible Assets (Excluding Goodwill)	426		426		426
Customer relationships
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	59,218		59,218		59,218
Accumulated Amortization of Identifiable Intangible Assets	(19,791)		(19,791)		(14,933)
Finite-Lived Intangible Assets, Net	39,427		39,427		44,285
Contract backlog
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	900		900		900
Accumulated Amortization of Identifiable Intangible Assets	(900)		(900)		(525)
Finite-Lived Intangible Assets, Net	0		0		375
Technology
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	1,000		1,000		1,000
Accumulated Amortization of Identifiable Intangible Assets	(217)		(217)		(117)
Finite-Lived Intangible Assets, Net	$ 783		$ 783		$ 883