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7. Notes Payable (Details - Notes payable) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Total notes payable $ 6,069 $ 6,279
Less current maturities 0 (3,166)
Total long-term portion 6,069 3,113
Term Loan 1 [Member]    
Total notes payable $ 2,705 2,832
Debt maturity date May 31, 2018  
Debt interest rate 4.15%  
Term Loan 2 [Member]    
Total notes payable $ 3,364 $ 3,447
Debt maturity date May 31, 2019  
Debt interest rate 4.16%