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Divestitures	12 Months Ended
Divestitures	Apr. 29, 2017
Business Combinations [Abstract]
Divestitures	Divestitures Fiscal 2015 Divestiture On February 3, 2015, we sold our 100% ownership interest in our Trace Laboratories businesses for $11.7 million. The businesses, located in Maryland and Illinois, provided services for qualification testing and certification, and analysis of electronic and optical components. The net assets of the businesses had a book value of $4.0 million. We recorded a pre-tax gain of $7.7 million related to the sale of the net assets.