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Shareholders Equity (Details) - USD ($)
shares in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Beginning Balance, Amount $ 21,333,000 $ 21,646,000 $ 24,724,000 $ 23,183,000 $ 21,646,000 $ 23,183,000
Stock Option Expense 59,000 67,000 13,000 13,000 126,000 26,000
Issuance Of Shares - Atm, Net, Amount       2,023,000    
Issuance Of Shares - Option Exercises 14,000   1,000 19,000    
Net Loss (1,040,000) (380,000) (1,691,000) (514,000) (1,420,000) (2,205,000)
Ending Balance, Amount 20,366,000 21,333,000 23,047,000 24,724,000 20,366,000 23,047,000
Additional Paid-in Capital [Member]            
Beginning Balance, Amount 74,953,000 74,886,000 74,550,000 72,523,000 74,886,000 72,523,000
Stock Option Expense 59,000 67,000 13,000 13,000    
Issuance Of Shares - Atm, Net, Amount       1,996,000    
Issuance Of Shares - Option Exercises 13,000   1,000 18,000    
Net Loss 0 0 0 0    
Ending Balance, Amount 75,025,000 74,953,000 74,564,000 74,550,000 75,025,000 74,564,000
Common Stock [Member]            
Beginning Balance, Amount 648,000 648,000 648,000 620,000 648,000 620,000
Stock Option Expense 0 0 0 0    
Issuance Of Shares - Atm, Net, Amount       27,000    
Issuance Of Shares - Option Exercises 1,000   0 1,000    
Net Loss 0 0 0 0    
Ending Balance, Amount $ 649,000 $ 648,000 $ 648,000 $ 648,000 $ 649,000 $ 648,000
Beggining Balance, Shares 64,801,373 64,801,373 64,760,123 62,036,399 64,801,373 62,036,399
Issuance Of Shares - Atm, Net, Shares       2,650,724    
Issuance Of Shares - Option Exercises, Shares 50,000   8,750 73,000    
Ending Balance, Shares 64,851,373 64,801,373 64,768,873 64,760,123 64,851,373 64,768,873
Accumulated Deficit [Member]            
Beginning Balance, Amount $ (54,268,000) $ (53,888,000) $ (50,474,000) $ (49,960,000) $ (53,888,000) $ (49,960,000)
Stock Option Expense 0 0 0 0    
Issuance Of Shares - Atm, Net, Amount       0    
Issuance Of Shares - Option Exercises 0   0 0    
Net Loss (1,040,000) (380,000) (1,691,000) (514,000)    
Ending Balance, Amount $ (55,308,000) $ (54,268,000) $ (52,165,000) $ (50,474,000) $ (55,308,000) $ (52,165,000)