SHARE-BASED COMPENSATION, Compensation Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Compensation Expense [Abstract]
Share-based compensation expense	$ 1,800,000	$ 2,100,000	$ 3,648,000	$ 4,054,000
401(k) Profit Sharing Plan [Abstract]
Contribution to profit sharing plan	700,000	$ 700,000	1,400,000	$ 1,400,000
Restricted Stock [Member]
Compensation Expense [Abstract]
Unrecognized compensation expense	$ 11,600		$ 11,600
Unrecognized compensation expense, period for recognition			33 months