Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v3.7.0.1
Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Income Tax Contingency [Line Items]          
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount       $ 5,500,000  
Income Tax Expense (Benefit)       58,000 $ (102,000)
Tax Credit Carryforward, Amount       1,500,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense       2,000 2,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued       11,200 9,800
Federal [Member]          
Income Tax Contingency [Line Items]          
Operating Loss Carryforwards       39,300,000  
State and Local Jurisdiction [Member]          
Income Tax Contingency [Line Items]          
Income Tax Expense (Benefit)       45,000 $ 107,000
Operating Loss Carryforwards       6,800,000  
expiration net operating loss carryforward       $ 27,000  
Subsequent Event [Member]          
Income Tax Contingency [Line Items]          
Other Tax Carryforward, Expiration Dates   Mar. 31, 2022      
Subsequent Event [Member] | Minimum [Member] | Federal [Member]          
Income Tax Contingency [Line Items]          
Operating Loss Carryforwards, Expiration Dates Mar. 31, 2023        
Subsequent Event [Member] | Minimum [Member] | State and Local Jurisdiction [Member]          
Income Tax Contingency [Line Items]          
Operating Loss Carryforwards, Expiration Dates     Mar. 31, 2018