Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 6,337	$ 3,451
Effective tax rate for income tax expense (as a percent)	46.90%	27.80%
Net discrete tax benefits	$ 2,417
Transition tax unrepatriated foreign earnings	1,655
Additions for tax positions of current year	670
Operating Loss Carryforwards [Line Items]
Valuation allowances	25,137
Recognition of unrecognized tax benefit upon which the effective rate would change	7,103
Additions for tax positions of the current year	870
United States
Operating Loss Carryforwards [Line Items]
Valuation allowances	1,402
Foreign
Operating Loss Carryforwards [Line Items]
Valuation allowances	$ 23,735