STOCK-BASED COMPENSATION. (Details 3) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
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| 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 |
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- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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