Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Net tax benefit	$ 5,900,000	$ 800,000	$ 51,800,000
Federal corporate income tax rate	21.00%	21.00%	35.00%
Effective tax rate on non deductible expense	6.30%	5.10%	132.10%
Deferred tax asset valuation allowance change in amount net	$ 10,800,000	$ 6,900,000	$ 3,500,000
Valuation allowance on deferred tax assets	(19,033,000)	(14,460,000)	(7,608,000)
Unrecognized tax benefits	2,589,000	4,609,000	5,655,000	$ 4,741,000
Amount of unrecognized tax benefits would, if recognized, impact effective tax rate	3,600,000
Decrease in unrecognized income benefits and interest	1,400,000
Operating loss carryforward, valuation allowance	1,000,000
Tax credit carryforward, valuation allowance	3,300,000
Impact of these tax holidays decreased foreign taxes	0.00	0.00	$ 800,000
Benefit of the tax holidays on net income per share (diluted)			$ 0.03
Deferred tax assets, tax credit carryforwards, research	2,654,000	917,000
Non-U.S. credit carryforwards	3,313,000	4,130,000
Deferred tax liability. repatriation of the unremitted earnings	2,300,000
Income tax examination, penalties and interest accured	1,500,000	$ 1,300,000	$ 1,400,000
State Net Operating Loss Carryforwards
Income Taxes [Line Items]
Deferred tax asset valuation allowance amount increase			2,300,000
Foreign Net Operating Loss Carryforwards
Income Taxes [Line Items]
Deferred tax asset valuation allowance amount increase			$ 1,200,000
Foreign Tax Authority
Income Taxes [Line Items]
Deferred tax asset valuation allowance change in amount net	900,000
NOL carryovers	$ 14,100,000
NOL carryovers expiration beginning year	46023
Tax credits in foreign jurisdictions	$ 3,400,000
United States
Income Taxes [Line Items]
Deferred tax asset valuation allowance change in amount net	1,500,000
Valuation allowance on deferred tax assets	(500,000)
NOL carryovers	1,500,000
Tax credits in foreign jurisdictions	5,800,000
Deferred tax assets, tax credit carryforwards, research	2,400,000
State and Local Jurisdiction
Income Taxes [Line Items]
Deferred tax asset valuation allowance change in amount net	5,200,000
NOL carryovers	$ 225,400,000
NOL carryovers expiration beginning year	47484
Tax credits in foreign jurisdictions	$ 200,000