Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Income Tax Contingency [Line Items]
Pretax income (loss)	$ 5,513,000	$ 272,000	$ 21,097,000	$ 10,286,000
Income tax expense (benefit)	4,021,000	$ 2,553,000	11,211,000	$ 5,161,000
Decrease in valuation allowance			(600,000)
Gross unrecognized tax benefits	48,300,000		48,300,000		$ 46,300,000
Unrecognized tax benefits that would impact effective tax rate	37,900,000		37,900,000
Minimum [Member]
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits balance may decrease within the next twelve months	0		0
Maximum [Member]
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits balance may decrease within the next twelve months	6,400,000		6,400,000
United States - Federal [Member]
Income Tax Contingency [Line Items]
Income tax expense (benefit)			0
Pretax income (loss)	$ 15,600,000		15,600,000
Foreign Tax Authority [Member] | Germany and United Kingdom [Member]
Income Tax Contingency [Line Items]
Income tax expense (benefit)			$ 2,100,000