STOCK-BASED COMPENSATION - Stock Option Activity (Details) - USD ($)	9 Months Ended	12 Months Ended
	Dec. 31, 2021	Mar. 31, 2021	Mar. 31, 2020
Number Of Options
Outstanding at the beginning of the period (in shares)	2,719,000	2,916,000
Exercised (in shares)		(150,000)
Canceled (in shares)	(49,000)	(47,000)
Outstanding at the end of the period (in shares)	2,670,000	2,719,000	2,916,000
Vested or expected to vest at the end of the period (in shares)	2,670,000
Exercisable and vested at the end of the period (in shares)	2,670,000
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 0.372	$ 0.415
Exercised (in shares)		0.800
Outstanding at the end of the period (in dollars per share)	0.343	$ 0.372	$ 0.415
Vested or expected to vest at the end of the period (in dollars per share)	0.343
Exercisable and vested at the end of the period (in dollars per share)	$ 0.343
Aggregate Intrinsic Value
Outstanding Value at the beginning of the period	$ 2,476,300	$ 2,546,800
Outstanding Value at the end of the period	4,505,500	$ 2,476,300	$ 2,546,800
Vested or expected to vest at the end of the period	4,505,500
Exercisable and vested at the end of the period	$ 4,505,500
Weighted Average Remaining Contractual Life (in years)
Outstanding at the end of the period	4 years 10 months 24 days	5 years 7 months 13 days	6 years 2 months 15 days
Vested or expected to vest at the end of the period	4 years 10 months 24 days
Exercisable and vested at the end of the period	4 years 10 months 24 days