Annual report pursuant to Section 13 and 15(d)

Equity - Class A Common Stock (Detail)

v3.20.4
Equity - Class A Common Stock (Detail) - Class A Common Stock - shares
1 Months Ended
Dec. 31, 2020
Nov. 30, 2020
Aug. 31, 2020
Jun. 30, 2020
May 31, 2020
Mar. 31, 2020
Feb. 29, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Class Of Stock [Line Items]                    
Common stock, shares outstanding 9,650,692             9,329,879 8,518,000 8,142,000
Issuance of Class A common stock upon conversion of Class B units to Class A common stock 69,724 36,361 24,191 5,400 7,355 20,662 155,224      
Issuance of Class A common stock upon vesting of restricted stock units         1,896          
Common stock conversion date 2020-12 2020-11 2020-08 2020-06 2020-05 2020-03 2020-02      
Issuance of Class A common stock upon vesting of restricted stock units, Transaction date         2020-05