Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Compensation Cost (Detail)

v3.21.2
Stock-based Compensation - Compensation Cost (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]        
Stock-based compensation expense $ 588,000 $ 399,000 $ 1,528,000 $ 1,220,000
Tax benefit from compensation expense $ 0 $ 0 $ 0 $ 0