Income Tax - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Mar. 27, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Unusual Risk Or Uncertainty [Line Items]
Effective tax rate, percent		797.50%	162.30%	61.30%	278.30%
Deferred foreign tax liability		$ 3.8		$ 3.8
Covid 19
Unusual Risk Or Uncertainty [Line Items]
Effective tax rate, percent	72.50%