Discontinued Operations - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Jun. 11, 2018	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	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			$ 1.5
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			$ 1.9		2.7
Gain from tax liability		$ 3.6		3.6
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	$ 0.0	$ 0.1