Annual report pursuant to Section 13 and 15(d)

14. STOCK-BASED COMPENSATION (Details - Stock based compensation expense)

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14. STOCK-BASED COMPENSATION (Details - Stock based compensation expense) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Total stock-based compensation expense $ 2,019 $ 1,838 $ 1,724
Employees [Member]      
Total stock-based compensation expense 1,694 1,493 1,333
Non-Employees [Member]      
Total stock-based compensation expense $ 325 $ 345 $ 391