Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Summary of Number of Performance RSUs Granted and Weighted-average Grant Date Fair Value of PSUs (Details)

v3.19.3
Share-Based Compensation - Summary of Number of Performance RSUs Granted and Weighted-average Grant Date Fair Value of PSUs (Details) - Performance RSUs - $ / shares
6 Months Ended 9 Months Ended
Jun. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Number of Shares, Granted 50,000 50,000 0
Number of Shares, Unvested, Ending balance 50,000   0
Weighted Average grant date fair value per share, Granted $ 8.21    
Weighted Average grant date fair value per share, Unvested, Ending balance $ 8.21