v3.21.2
Stock-Based Compensation - Summary of RSA Activity (Detail) - Restricted Stock Awards - $ / shares
shares in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of Shares, Unvested at beginning of period 378 0 341 0
Number of Shares, Granted 1 341 202 341
Number of Shares, Vested 0 0 164 0
Number of Shares, Forfeited (5) 0 (5) 0
Number of Shares, Unvested at end of period 374 341 374 341
Weighted Average Grant Date Fair Value per Share, Unvested at beginning of period $ 19.60 $ 0 $ 20.50 $ 0
Weighted average grant date fair value per share 26.02 20.50 18.68 20.50
Weighted Average Grant Date Fair Value per Share, Vested 0 0 20.15 0
Weighted Average Grant Date Fair Value per Share, Forfeited 19.72 0 19.72  
Weighted Average Grant Date Fair Value per Share, Unvested at end of period $ 19.61 $ 20.50 $ 19.61 $ 20.50