Annual report pursuant to Section 13 and 15(d)

Equity - Class A Common Stock (Detail)

v3.19.3.a.u2
Equity - Class A Common Stock (Detail) - Class A Common Stock - shares
1 Months Ended
Dec. 31, 2019
Nov. 30, 2019
Aug. 31, 2019
Jun. 30, 2019
May 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Class Of Stock [Line Items]                  
Common stock, shares outstanding 9,329,879           8,518,096 8,142,000 8,074,000
Issuance of Class A common stock upon conversion of Class B units to Class A common stock 133,812 16,054 556,293 2,386 84,268 17,074      
Issuance of Class A common stock upon vesting of restricted stock units         1,896        
Common stock conversion date Dec. 31, 2019 Nov. 30, 2019 Aug. 31, 2019 Jun. 30, 2019 May 31, 2019 Mar. 31, 2019      
Stock issued upon vesting of restricted stock units, Transaction date         May 31, 2019