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Discontinued Operations - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Jul. 01, 2018
Apr. 01, 2018
Mar. 26, 2017
Public Safety & Security | Disposal Group, Held-for-sale, Not Discontinued Operations | Forecast      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Purchase price, in cash $ 69.0    
Proceeds from divestiture 70.0    
Working capital retained $ 7.0    
Herley | Disposed of by Sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impact of revenue   $ 1.8  
Impact of operating results   2.0  
Transaction-related costs   0.8  
Herley | Disposed of by Sale | Selling, General and Administrative Expenses      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Depreciation and amortization   $ 0.1 $ 0.1