Discontinued Operations - Summary of Assets and Liabilities of Discontinued Operations (Details) - USD ($) $ in Millions	Dec. 26, 2021	Dec. 27, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current liabilities of discontinued operations	$ 0.8	$ 3.1
Herley | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts payable	0.0	0.2
Accrued expenses	0.0	0.1
Other current liabilities	0.8	2.8
Current liabilities of discontinued operations	0.8	3.1
Other long-term liabilities of discontinued operations	$ 2.5	$ 2.5