Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v3.8.0.1
Income Taxes (Details Textual) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2018
Mar. 31, 2018
Mar. 31, 2017
Income Tax Contingency [Line Items]                  
Statutory federal income tax rate 21.00% 34.00%       30.75% 30.80%   34.00%
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Increase (Decrease) Net Deferred Tax Asset               $ (15,100,000)  
Deferred Tax Assets, Gross $ 37,100,000         $ 37,100,000 $ 37,100,000 37,100,000  
Deferred Tax Assets, Valuation Allowance 37,103,000         37,103,000 37,103,000 37,103,000 $ 52,190,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount               15,100,000  
Income Tax Expense (Benefit)               (597,000) 58,000
Tax Credit Carryforward, Amount 800,000         800,000 800,000 800,000  
Income Taxes Receivable 697,000         697,000 697,000 697,000  
Alternative minimum tax credit carryforward 0         0 0 0 697,000
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability               697,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense               2,000 2,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 15,300         15,300 15,300 15,300 11,200
Federal [Member]                  
Income Tax Contingency [Line Items]                  
Operating Loss Carryforwards 25,900,000         25,900,000 25,900,000 25,900,000  
State and Local Jurisdiction [Member]                  
Income Tax Contingency [Line Items]                  
Income Tax Expense (Benefit)               54,000 $ 45,000
Operating Loss Carryforwards $ 9,100,000         $ 9,100,000 $ 9,100,000 9,100,000  
expiration net operating loss carryforward               $ 4,000  
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, 2019