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STOCK-BASED COMPENSATION: - Acquisition-related Consideration Holdback (Details)
$ in Millions
6 Months Ended
Sep. 30, 2021
USD ($)
DataFleets, Ltd  
Share-based compensation  
Holdback expenses $ 3.8
Holdback expenses, expected costs 6.0
DataFleets, Ltd | Accrued Liabilities  
Share-based compensation  
Holdback expenses 3.8
Data Plus Math Corporation  
Share-based compensation  
Holdback expenses 18.3
Holdback expenses, expected costs 8.1
Data Plus Math Corporation | Accrued Liabilities  
Share-based compensation  
Holdback expenses $ 2.0