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Equity Based Compensation - Restricted Stock Awards - Additional Information (Details) - 2018 Equity Incentive Plan - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Jun. 25, 2018
Jan. 31, 2019
Mar. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Number of unvested shares issued     737,658
Restricted Stock Awards      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Number of unvested shares issued     46,368
Unrecognized compensation cost     $ 7.5
Unrecognized compensation cost, weighted average recognition period     2 years 3 months 18 days
Restricted Stock Awards | Distributions in Excess of Retained Earnings      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Dividends declared on unvested restricted common stock     $ 0.2
Restricted Stock Awards | First Anniversary      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock awards expected to vest 15,484    
Restricted Stock Awards | First, Second and Third Anniversaries      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock awards expected to vest 675,806    
Restricted Stock Awards | Directors, Executive Officers and Other Employees      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Number of unvested shares issued 691,290 46,368