Quarterly report pursuant to Section 13 or 15(d)

Equity - Class B Common Stock (Detail)

v3.20.1
Equity - Class B Common Stock (Detail) - Class B Common Stock - shares
 1 Months Ended 3 Months Ended
Mar. 31, 2020
Feb. 29, 2020
May 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Class Of Stock [Line Items]              
Common stock conversion date 2020-03 2020-02          
Common stock, shares outstanding 4,855,131     4,855,131 4,919,000 5,031,017 4,934,000
Cancellation of Class B common stock upon conversion of Class B units to Class A common stock       176,000 17,000    
Resale And Registration Rights Agreement              
Class Of Stock [Line Items]              
Cancellation of Class B common stock upon conversion of Class B units to Class A common stock (20,662) (155,224) (20,662)