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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Examination [Line Items]
Valuation allowance against deferred tax assets	$ 28,648	$ 24,079
Domestic net operating loss carryforward	0	0
Foreign net operating loss carryforwards	70,000	81,000
State net operating loss carry forwards	$ 220,800	236,000
Operating loss carryforwards expiration start year	2020
Operating loss carryforwards expiration end year	2038
Expiration of State tax credits	2029
State tax credits	$ 800
Income taxes receivable	5,579	2,380
Income tax payable included in other accrued liabilities		3,041
Unrecognized tax benefits	2,441	713	$ 6,104
Interest and penalties related to unrecognized tax benefits	600	$ 100
Unrecognized tax benefits would impact effective tax rate	$ 1,000
Exemption of tax credit	1.30%	(1.00%)
U.S. federal statutory rate on income before income taxes	21.00%	21.00%	35.00%
Deferred tax balance		$ 20,600
Transition tax on certain repatriated earnings of foreign subsidiaries payable period	8 years
One-time transition tax liability, foreign earnings		0
Reduction to deferred tax balance		400	$ 20,200
Provisional amount of transition tax liability, foreign subsidiaries		0
Foreign dividends		10,900
Foreign earnings tax liability	$ 0
Maximum [Member]
Income Tax Examination [Line Items]
Exemption of tax credit	50.00%
Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Period of examination by internal revenue service minimum	2015
Period of examination by internal revenue service maximum	2018
Foreign Tax Authority [Member] | U.K Tax Authorities [Member]
Income Tax Examination [Line Items]
Period of examination by internal revenue service minimum	2014
Period of examination by internal revenue service maximum	2018
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Period of examination by internal revenue service minimum	2013
Period of examination by internal revenue service maximum	2018
Payroll [Member] | Maximum [Member]
Income Tax Examination [Line Items]
Exemption of tax credit	15.00%
Earliest Tax Year [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Period of examination by internal revenue service	2016
Latest Tax Year [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Period of examination by internal revenue service	2018
Other Liabilities [Member]
Income Tax Examination [Line Items]
Unrecognized tax benefits	$ 3,100	$ 900

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