Income Taxes-Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Effective Income Tax Rate Reconciliation, Amount
Statutory Federal income tax expense (benefit), Amount	$ (177)	$ (818)
State and local income tax, net of Federal tax benefit, Amount		(70)
Impact of income tax rate changes, Amount	0	(25)
Change in Valuation Allowance, Amount	174	917
Other, Amount	3	(4)
Income Tax Expense (Benefit)	$ 0	$ 0
Effective Income Tax Rate Reconciliation, Percent
Statutory Federal income tax expense (benefit), Percent	21.00%	21.00%
State and local income tax, net of Federal tax benefit, Percent	0.00%	12.00%
Impact of income tax rate changes, Percent	0.00%	0.60%
Change in Valuation Allowance, Percent	(20.70%)	(33.50%)
Other, Percent	(0.30%)	(0.10%)
Income tax expense (benefit), Percent	0.00%	0.00%