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Stockholders' Equity - LTIP (Details) - Employee Stock Option
$ in Thousands
3 Months Ended
Jun. 30, 2017
USD ($)
2017 Long-Term Incentive Plan NQSOs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock granted net of forfeitures $ 4,619
Compensation expenses recorded 497
2018 Long-Term Incentive Plan NQSOs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock granted net of forfeitures 4,489
Compensation expenses recorded 79
Long Term Incentive Plan NQSOs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized stock compensation expense $ 8,913