Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Valuation Allowance [Line Items]
Income tax (benefit) expense	$ (1,076)	$ 501	$ 1,425	$ 5,014
Foreign
Valuation Allowance [Line Items]
Deferred tax asset, valuation allowance	3,200		3,200
State
Valuation Allowance [Line Items]
Deferred tax asset, valuation allowance	$ 700		$ 700