Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Valuation Allowance [Line Items]
Income tax expense	$ 309	$ 1,698	$ 2,501	$ 4,513
Foreign
Valuation Allowance [Line Items]
Deferred tax asset, valuation allowance	3,000		3,000
State
Valuation Allowance [Line Items]
Deferred tax asset, valuation allowance	$ 700		$ 700