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9. Equity-Based Incentive Plans (Details - Option Activity - Stock Options [Member] - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Number of Options    
Number of Options Outstanding, Beginning 326,000  
Number of Options Granted 0 0
Number of Options Exercised (14,000)  
Number of Options Forfeited (2,000)  
Number of Options Outstanding, Ending 310,000 326,000
Number of Options Vested 298,000  
Number of Options Exercisable 298,000  
Weighted Average Exercise Price    
Weighted Average Exercise Price Outstanding, Beginning $ 4.38  
Weighted Average Exercise Price Granted  
Weighted Average Exercise Price Exercised 3.6  
Weighted Average Exercise Price Forfeited 3.99  
Weighted Average Exercise Price Outstanding, Ending 4.41 $ 4.38
Weighted Average Exercise Price Vested 4.44  
Weighted Average Exercise Price Exercisable $ 4.44  
Remaining Contractual Term    
Options Outstanding 2 years 2 months 12 days  
Options Vested 2 years 1 month 6 days  
Options Exercisable 2 years 1 month 6 days  
Aggregate Intrinsic Value    
Aggregate intrinsic value options outstanding $ 0  
Aggregate intrinsic value options vested 0  
Aggregate intrinsic value options exercisable $ 0