Goodwill and Other Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 61,118	$ 16,618
Accumulated Amortization of Identifiable Intangible Assets	(15,575)	(7,740)
Finite-Lived Intangible Assets, Net	45,543	8,878
Indefinite-lived Intangible Assets
Indefinite-Lived Intangible Assets (Excluding Goodwill)	61,544	17,044
Intangible Assets Net Excluding Goodwill Accumulated Amortization	(15,575)	(7,740)
Intangible assets, net	45,969	9,304
Amortization of Intangible Assets	7,835	3,502	$ 2,868
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2017	10,159
2018	9,183
2019	8,367
2020	7,821
2021	7,274
2022 and thereafter	$ 2,739
Forecast Assumptions Period	3 years
Engineering Licenses
Indefinite-lived Intangible Assets
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 426	426
Customer Relationships
Indentifiable Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 59,218	16,618
Accumulated Amortization of Identifiable Intangible Assets	(14,933)	(7,740)
Finite-Lived Intangible Assets, Net	$ 44,285	8,878
Contract Backlog
Indentifiable Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	1 year
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 900	0
Accumulated Amortization of Identifiable Intangible Assets	(525)	0
Finite-Lived Intangible Assets, Net	$ 375	0
Technology-Based Intangible Assets
Indentifiable Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Finite-lived Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 1,000	0
Accumulated Amortization of Identifiable Intangible Assets	(117)	0
Finite-Lived Intangible Assets, Net	$ 883	$ 0