Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.20.4
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Operating Loss Carryforwards [Line Items]      
Excess tax benefits associated with stock-based compensation arrangements $ 2,400 $ 3,000  
Valuation allowance, deferred tax asset change 2,200    
CARES Act Impact, tax benefit 4,300    
Unrecognized tax benefits, period change 2,100    
Unrecognized tax benefits 6,203 $ 3,867 $ 4,297
Domestic Tax Authority      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 5,800    
Valuation allowance 1,600    
State and Local Jurisdiction      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 95,900    
Valuation allowance $ 63,300