STOCK PLANS AND STOCK-BASED COMPENSATION - Stock option activity (Details) - $ / shares	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Number of Shares
Balance, beginning of period	14,310	17,332
Options exercised	(6,799)	(1,511)
Balance, end of period	7,511	15,821
Weighted Average Exercise Price
Balance, beginning of period	$ 2.78	$ 2.78
Options exercised	2.78	2.78
Balance, end of period	$ 2.78	$ 2.78