Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v3.20.1
Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Income Tax Contingency [Line Items]        
Statutory federal income tax rate     21.00% 21.00%
Deferred Tax Assets, Valuation Allowance     $ 40,841,000 $ 38,771,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount     2,100,000  
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax     348,000 697,000
Income Tax Expense (Benefit)     36,000 39,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense     2,600 2,500
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued     20,400 17,800
Federal [Member]        
Income Tax Contingency [Line Items]        
Tax Credit Carryforward, Amount     800,000  
Operating Loss Carryforwards     28,800,000  
State and Local Jurisdiction [Member]        
Income Tax Contingency [Line Items]        
Tax Credit Carryforward, Amount     100,000  
Income Tax Expense (Benefit)     19,000 $ 23,000
Operating Loss Carryforwards     8,200,000  
expiration net operating loss carryforward     $ 400,000  
Subsequent Event [Member]        
Income Tax Contingency [Line Items]        
Other Tax Carryforward, Expiration Dates   Mar. 31, 2021    
Subsequent Event [Member] | Minimum [Member] | Federal [Member]        
Income Tax Contingency [Line Items]        
Operating Loss Carryforwards, Expiration Date Mar. 31, 2022      
Subsequent Event [Member] | Minimum [Member] | State and Local Jurisdiction [Member]        
Income Tax Contingency [Line Items]        
Other Tax Carryforward, Expiration Dates   Mar. 31, 2021    
Operating Loss Carryforwards, Expiration Date   Mar. 31, 2021