Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan - Additional Information (Detail)

v3.19.3.a.u2
Employee Benefit Plan - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items]    
Maximum annual contributions per employee percent 15.00%  
Minimum age for employees to be covered under profit sharing plan 21 years  
Minimum service period for employees to be covered under profit sharing plan 6 months  
Vesting period for company contributions to benefit plan 6 years  
Employer contribution $ 2,400,000 $ 2,300,000
Deferred Compensation Plan [Member]    
Defined Contribution Plan Disclosure [Line Items]    
Employer contribution $ 100,000 $ 100,000