Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Restricted Stock (Details)

v3.19.1
Shareholders' Equity - Restricted Stock (Details) - Restricted shares
$ in Thousands
2 Months Ended 3 Months Ended
May 30, 2018
installment
Mar. 07, 2018
installment
Mar. 31, 2019
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares | shares     2,325,000
Fair Value | $     $ 7,522
Number of vesting installments | installment 2 4  
January 10, 2023      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares | shares     2,295,000
Fair Value | $     $ 7,436
January 25, 2021      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares | shares     30,000
Fair Value | $     $ 86