XML 56 R45.htm IDEA: XBRL DOCUMENT v3.21.1
Equity-Based Compensation - Additional Information (Detail) - 2017 Long-Term Incentive Plan
$ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Cost related to restricted shares to be recognized $ 3.0
Cost related to unvested restricted shares to be recognized, over an expected weighted-average period 2 years 3 months 18 days