Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 5,851	$ 2,267	$ 12,186	$ 5,718
Effective tax rate for income tax expense (as a percent)	38.70%	12.60%	42.60%	18.80%
Net discrete tax benefits	$ 1,968		$ 4,385
Additions for tax positions of the current year	4,710
Settlements for tax positions of prior years	2,958
Transition tax unrepatriated foreign earnings			1,655
Additions for tax positions of prior year			670
Operating Loss Carryforwards [Line Items]
Valuation allowances	24,467		24,467
Recognition of unrecognized tax benefit upon which the effective rate would change	11,663		11,663
Additions for tax positions of the current year	5,138		946
United States
Operating Loss Carryforwards [Line Items]
Valuation allowances	1,402		1,402
Foreign
Operating Loss Carryforwards [Line Items]
Valuation allowances	$ 23,065		$ 23,065