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F. NOTES PAYABLE (Details - Debt maturities) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]    
Principal maturity 2018 $ 59 $ 81
Principal maturity 2019 46 58
Principal maturity 2020 46 55
Principal maturity 2021 46 55
Principal maturity 2022 46 55
Principal maturity Thereafter 46 55
Total long term debt 289 359
Deferred borrowing costs (29) (35)
Total long term debt $ 260 $ 359