Income Tax - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2020	Sep. 27, 2019	Sep. 25, 2020	Sep. 25, 2020	Sep. 27, 2019	Sep. 27, 2019
Income Taxes [Line Items]
Income tax provision	$ 4.8	$ 3.9	$ 15.0	$ 15.0	$ 8.2	$ 8.2
Effective tax rate	16.00%	81.40%		20.60%		80.50%
Undistributed earnings of foreign subsidiaries	$ 212.6		212.6	$ 212.6
Gross liability for unrecognized tax benefits, excluding interest	1.0	$ 1.0	1.0	1.0	1.0	$ 1.0
Provision for income taxes	4.8	$ 3.9	$ 15.0	15.0	$ 8.2	$ 8.2
CARES ACT [Member]
Income Taxes [Line Items]
Income tax provision	0.0			$ 0.0
Percentage removal of taxable income limitation on net operating losses deduction				80.00%
Provision for income taxes	$ 0.0			$ 0.0