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Subsequent Events (Details) $ in Thousands		3 Months Ended
Subsequent Events (Details) $ in Thousands	Apr. 05, 2016 USD ($)	Jul. 02, 2016 USD ($) employee
PCB Group, Inc. [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase price	$ 580,000
Escrow account	$ 43,500
Minimum [Member] \| Severance And Related Charges [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Number of estimated positions to be eliminated \| employee		55
Expected costs to incur		$ 1,500
Maximum [Member] \| Severance And Related Charges [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Number of estimated positions to be eliminated \| employee		65
Expected costs to incur		$ 2,000
Test [Member] \| Minimum [Member] \| Severance And Related Charges [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Expected costs to incur		1,100
Test [Member] \| Maximum [Member] \| Severance And Related Charges [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Expected costs to incur		1,400
Sensors [Member] \| Minimum [Member] \| Severance And Related Charges [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Expected costs to incur		400
Sensors [Member] \| Maximum [Member] \| Severance And Related Charges [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Expected costs to incur		$ 600