Quarterly report pursuant to Section 13 or 15(d)

Equity-Based Compensation (Detail)

v3.20.2
Equity-Based Compensation (Detail) - Restricted Stock - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2020
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregate grant date fair value       $ 3.8
Compensation expense $ 0.4   $ 1.2  
Unrecognized compensation expense $ 2.0   $ 2.0  
Class A Common Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options granted (in shares)   292,534