Annual report pursuant to Section 13 and 15(d)

8. STOCK-BASED INCENTIVE PLANS (Details 4)

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8. STOCK-BASED INCENTIVE PLANS (Details 4) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]    
Stock options $ 745,000 $ 3,573,000
Warrants 282,000 2,182,000
Restricted stock units 836,000 370,000
Earn-out compensation expense (Note 5) 141,000 58,000
Other 0 34,000
Total noncash stock compensation expense $ 2,004,000 $ 6,217,000