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STOCK-BASED COMPENSATION (Narrative) (Details)	3 Months Ended		12 Months Ended
STOCK-BASED COMPENSATION (Narrative) (Details)	Jun. 30, 2021 USD ($) installment $ / shares shares	Jun. 30, 2020 USD ($) $ / shares	Mar. 31, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares) \| shares	168,849
Vesting percentage	100.00%
Weighted-average fair value at the grant date (in dollars per share) \| $ / shares	$ 84.83	$ 30.39
Compensation related to stock option and restricted stock plans, net of taxes and adjustments	$ 4,184,090	$ 4,583,600
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of authorized common stock reserved for issuance (in shares) \| shares	3,350,000
Total unrecognized stock-based compensation expense related to non-vested stock options	$ 7,700,000
Weighted average period for recognition	3 years 6 months
Compensation related to stock option and restricted stock plans, net of taxes and adjustments	$ 943,627	1,046,735
Employee Stock Option \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option, expiration period	10 years
Vesting period	6 years
Employee Stock Option \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments \| installment	6
Awards granted (in shares) \| shares	0		52,735
Grant date fair value (in dollars per share) \| $ / shares	$ 0		$ 106.28
Compensation related to stock option and restricted stock plans, net of taxes and adjustments	$ 3,240,463	$ 3,536,865
Unvested restricted stock awards	$ 24,000,000.0
Service Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	10 years
Number of installments \| installment	6
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	10 years
Weighted average period for recognition	2 years 9 months 18 days