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Stock Compensation - Long-Term Incentive Plan Options (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Nov. 02, 2018
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Long Term Incentive Plan NQSOs | LTIP NQSOs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation expenses   $ 914 $ 924 $ 1,904 $ 1,500
Unrecognized Stock Compensation Expense   $ 3,643   $ 3,643  
2019 Long-Term Incentive Plan NQSOs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options granted (in shares)   0   0  
Subsequent Event | 2019 Long-Term Incentive Plan NQSOs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options granted (in shares) 0