Acquisitions - Narrative (Details) - USD ($)				3 Months Ended
	Jul. 03, 2017	Apr. 03, 2017	Nov. 04, 2016	Sep. 30, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Estimated fair value of goodwill				$ 384,200,000	$ 380,846,000
RTL
Business Acquisition [Line Items]
Total purchase price	$ 6,000,000
Delta
Business Acquisition [Line Items]
Total purchase price		$ 40,500,000
Estimated fair value of goodwill		17,960,000
Tax deductible goodwill				17,723,000
Revenue of acquiree since acquisition date				5,532,000
Net income (loss) of acquiree since acquisition date				587,000
CES Creative Electronic Systems S.A.
Business Acquisition [Line Items]
Total purchase price			$ 39,123,000
Estimated fair value of goodwill			20,346,000
Revenue of acquiree since acquisition date				6,319,000
Net income (loss) of acquiree since acquisition date				$ 352,000
Customer Relationships | Delta
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 8,000,000
Useful life of acquired assets		9 years
Customer Relationships | CES Creative Electronic Systems S.A.
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired			$ 9,060,000
Useful life of acquired assets			9 years
Developed Technology Rights | Delta
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 5,900,000
Useful life of acquired assets		7 years
Developed Technology Rights | CES Creative Electronic Systems S.A.
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired			$ 5,662,000
Useful life of acquired assets			7 years
Backlog | Delta
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 3,100,000
Useful life of acquired assets		2 years