Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Contingency [Line Items]
Valuation allowance	$ 28,485,000	$ 30,029,000
Research and development, tax credit	2,800,000	(100,000)	$ 3,900,000
Unremitted earnings of subsidiaries outside the United States, reinvested	62,000,000.0	29,000,000.0
Deferred tax liability	0
Gross unrecognized tax benefits	30,500,000	$ 29,600,000	$ 26,900,000	$ 14,200,000
Unrecognized tax benefits that would impact effective tax rate	19,600,000
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	1,600,000
United States - Federal [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 62,400,000
Net operating loss carryforwards expiration year	2037
Tax credit carryforwards	$ 12,500,000
Tax credit carryforwards expiration year	2036
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 199,300,000
Tax credit carryforwards	$ 1,400,000
Tax credit carryforwards expiration year	2020
State and Local Jurisdiction [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards expiration year	2020
State and Local Jurisdiction [Member] | Maximum [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards expiration year	2039
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 3,300,000
Net operating loss carryforwards expiration year	2023
Tax credit carryforwards	$ 2,500,000
Tax credit carryforwards expiration year	2027
2037 [Member] | United States - Federal [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 30,100,000