6. INCOME TAXES - Tax Cuts and Jobs Act (Details) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Possible reduction in uncertain tax benefits	$ 0
Valuation allowance	16,183,000	$ 13,017,000
Valuation allowance, increase	3,200,000	3,600,000
Federal net operating loss		$ 378,000
Tax effect, Global intangible low-taxed income	0
Federal
Net operating loss carryforwards for income tax purposes	17,800,000
Tax credit carryforwards for income tax purposes	4,100,000
State
Net operating loss carryforwards for income tax purposes	21,000,000.0
Tax credit carryforwards for income tax purposes	$ 4,700,000