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Shareholders Equity (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Balance, Amount     $ 23,183,000 $ 23,502,000 $ 23,502,000
Stock Option Expense     26,000 72,000  
Issuance Of Shares - Atm, Net, Amount     2,023,000 33,000  
Issuance Of Shares - Option Exercises, Amount     20,000 83,000  
Net Loss $ (1,691,000) $ (668,000) (2,205,000) (1,196,000)  
Balance, Amount $ 23,047,000 $ 22,494,000 $ 23,047,000 $ 22,494,000 23,183,000
Issuance Of Shares - Option Exercises, Shares 8,750 140,000 81,750 140,000  
Common Stock          
Balance, Amount     $ 620,000 $ 581,000 581,000
Stock Option Expense     0 0  
Issuance Of Shares - Option Exercises, Amount     1,000 1,000  
Net Loss     0 0  
Balance, Amount $ 648,000 $ 584 $ 648,000 $ 584 $ 620,000
Balance, Shares     62,036,399 58,108,366 58,108,366
Issuance Of Shares - Atm, Net, Shares     2,650,724 150,400  
Issuance Of Shares - Atm, Net, Amount     $ 27,000 $ 2,000  
Issuance Of Shares - Option Exercises, Shares     81,750 185,000  
Ending Balance, Shares 64,768,873 58,443,766 64,768,873 58,443,766 62,036,399
Additional Paid-in Capital          
Balance, Amount     $ 72,523,000 $ 70,514,000 $ 70,514,000
Stock Option Expense     26,000 72,000  
Issuance Of Shares - Option Exercises, Amount     19,000 82,000  
Net Loss     0 0  
Balance, Amount $ 74,564,000 $ 70,699 74,564,000 70,699 72,523,000
Issuance Of Shares - Atm, Net, Amount     1,996,000 31,000  
Accumulated Deficit          
Balance, Amount     (49,960,000) (47,593,000) (47,593,000)
Stock Option Expense     0 0  
Issuance Of Shares - Option Exercises, Amount     0 0  
Net Loss     (2,205,000) (1,196,000)  
Balance, Amount $ (52,165,000) $ (48,789) (52,165,000) (48,789) $ (49,960,000)
Issuance Of Shares - Atm, Net, Amount     $ 0 $ 0