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STOCKHOLDERS' EQUITY (Tables)
 12 Months Ended
Dec. 31, 2020
Stockholders' Equity Note [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The following table summarizes the weighted average assumptions used to develop their fair value for the year ending December 31, 2020 and 2019:
20202019
Grant date fair value$2.44 $2.65 
Risk-free interest rate0.20 %1.25 %
Expected volatility55 %44 %
Expected life in years2.853.50
Dividend yield— — 
Schedule of Share-based Compensation, Stock Options, Reserved Shares for Future Issuance, Activity
As of December 31, 2020, we reserved shares of common stock for future issuance under the 2009 Plan and 2018 Plan as follows:
Options and RSUs outstanding1,713,000 
Shares available for future grant1,244,000 
Shares reserved2,957,000 
Share-based Compensation, Stock Options, Activity The following table summarizes activity related to options during the year ended December 31, 2020.
SharesWeighted
Average
Exercise
Price		Weighted Average Remaining Contractual TermAggregate Intrinsic Value
Outstanding at the beginning of the year1,685,000 $9.71 
Granted771,000 6.52 
Exercised(130,000)5.55 
Canceled(1,054,000)10.06 
Outstanding at the end of the year1,272,000 $7.92 3.4$533 
Vested and expected to vest1,256,000 $8.55 3.2$456 
Exercisable375,000 $7.91 2.1$98 
Schedule of Summary of RSUs Activity
The following table summarizes activity related to RSUs during the year ended December 31, 2020.
SharesWeighted
Average
Grant-Date Fair Value
Outstanding at the beginning of the year70,000 $11.52 
Granted597,000 5.32 
Released(76,000)6.86 
Forfeited(150,000)5.47 
Outstanding at the end of the year441,000 $5.99