Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Income Tax Contingency [Line Items]
Pretax income	$ 15,584,000	$ 10,014,000
Income tax expense (benefit)	7,190,000	$ 2,608,000
Decrease in valuation allowance	(1,000,000.0)
Gross unrecognized tax benefits	47,200,000		$ 46,300,000
Unrecognized tax benefits that would impact effective tax rate	36,700,000
Minimum [Member]
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits balance may decrease within the next twelve months	0
Maximum [Member]
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits balance may decrease within the next twelve months	6,300,000
United States - Federal [Member]
Income Tax Contingency [Line Items]
Income tax expense (benefit)	0
Net operating loss carryforwards	4,500,000
Foreign Tax Authority [Member] | Germany [Member]
Income Tax Contingency [Line Items]
Income tax expense (benefit)	$ 500,000