Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION. (Details 3)

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STOCK-BASED COMPENSATION. (Details 3) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Total stock-based compensation expense $ 2,809 $ 3,438
Employees [Member]    
Total stock-based compensation expense 2,422 2,905
Non-Employees [Member]    
Total stock-based compensation expense $ 387 $ 533