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SHARE-BASED COMPENSATION, Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Compensation Expense [Abstract]        
Total share-based compensation expense $ 1,800 $ 1,800 $ 3,575 $ 3,648
401(k) Profit Sharing Plan [Abstract]        
Contribution to profit sharing plan 1,000 $ 700 1,800 $ 1,400
Restricted Stock [Member]        
Compensation Expense [Abstract]        
Unrecognized compensation expense $ 12,400   $ 12,400  
Unrecognized compensation expense, period for recognition     33 months