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Income Taxes-Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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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%

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