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Discontinued Operations - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 11, 2018
Mar. 31, 2019
Apr. 01, 2018
Jul. 01, 2018
Public Safety & Security | Disposal Group, Held-for-sale, Not Discontinued Operations        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Purchase price, in cash       $ 69.0
Working capital adjustment $ 8.0      
Proceeds from divestiture 70.0 $ 1.0    
Working capital retained $ 7.0      
Transaction costs   2.7    
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   $ 0.0 $ 0.1