XML 79 R50.htm IDEA: XBRL DOCUMENT v3.20.1
Equity-Based Compensation - Additional Information (Details) - 2018 Equity Incentive Award Plan - shares
Mar. 31, 2020
Sep. 30, 2018
May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for grant under the plan (shares)     3,500,000
Additional Class A common shares added at the beginning of calendar year as percentage of common stock outstanding at end of previous year (percent) 36019000.00% 4.00%