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Discontinued Operations - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended 31 Months Ended
Jun. 11, 2018
Dec. 26, 2021
Dec. 27, 2020
Dec. 29, 2019
Dec. 27, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Final working capital settlement   $ 1.1      
Final working capital settlement related expenses   1.1      
Other income       $ 3.6  
Public Safety & Security | Discontinued Operations, Disposed of by Sale          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Purchase price, in cash $ 69.0        
Sale of discontinued operations         $ 68.9
Working capital adjustments $ 7.3        
Herley | Discontinued Operations, Disposed of by Sale          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Other income   0.0 $ 0.0 3.6  
Herley | Discontinued Operations, 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 expense   $ 0.0 $ 0.0 $ 0.0