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STOCK-BASED COMPENSATION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2020
STOCK-BASED COMPENSATION PLANS |
Schedule of outstanding and exercisable number of options | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | Outstanding Number of Options |  | Exercisable Number of Options
​ | ​ | (in thousands) | ​ | (in thousands)
Plan Category |  |  |  | ​ |
2005 Stock Option Plan |  | 299 |  | ​ | 299
Equity Compensation Plans not approved by Shareholders |  | 37 |  | ​ | 25
2017 Stock Option Plan |  | 670 |  | ​ | 251
Total |  | 1,006 | ​ | $ | 575
Summary of fair value of stock options grants | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | 2020 |  | 2019 |
Weighted average expected term |  | 6.79 years |  | 6.25 years | ​
Weighted average volatility |  | 117 | % | 122 | %
Weighted average risk-free interest rate |  | 1.59 | % | 2.30 | %
Dividend yield |  | 0 | % | 0 | %
Schedule of share based compensation expenses recorded in the consolidated statement of income | The following table summarizes stock-based compensation expenses recorded in the condensed consolidated statements of operations (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | For the Years Ended December 31,
​ |  | ​ | 2020 |  | 2019
Cost of Revenue | ​ | ​ | $ | 37 | ​ | $ | 21
Sales and marketing expense | ​ | ​ |  | 424 | ​ |  | 205
General, and administrative | ​ | ​ | ​ | 2,220 | ​ | ​ | 594
Total stock based compensation expense | ​ | ​ | ​ | 2,681 | ​ | ​ | 820
​
Summary of stock option activity under the option plan | A combined summary of stock option activity for all plans for the years ended December 31, 2020 and 2019 is presented below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | Aggregate
​ | ​ | Number of | ​ | Average | ​ | Remaining | ​ | Intrinsic
​ | ​ | Shares | ​ | Strike | ​ | Contractual | ​ | Value
​ |  | (in thousands) |  | Price |  | Life (Years) |  | (in thousands)
Outstanding at December 31, 2018 |  | 1,885 | ​ | $ | 0.80 | ​ | ​ |  | ​ | ​
Granted |  | 653 | ​ | $ | 5.81 | ​ | ​ |  | ​ | ​
Exercised |  | (503) | ​ | $ | 0.44 | ​ | ​ |  | ​ | ​
Expired | ​ | (6) | ​ | $ | 1.00 | ​ | ​ | ​ | ​ | ​
Forfeited |  | (174) | ​ | $ | 2.64 | ​ | ​ |  | ​ | ​
Outstanding at December 31, 2019 |  | 1,855 | ​ | $ | 2.48 | ​ | 6.42 | ​ | $ | 10,032
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at December 31, 2019 |  | 1,855 | ​ | $ | 2.48 | ​ | ​ | ​ | ​ | ​
Granted |  | 14 | ​ | $ | 10.15 | ​ | ​ | ​ |  | ​
Exercised |  | (622) | ​ | $ | 0.90 | ​ | ​ | ​ |  | ​
Forfeited | ​ | (241) | ​ | $ | 4.68 | ​ | ​ | ​ | ​ | ​
Outstanding at December 31, 2020 |  | 1,006 | ​ | $ | 3.04 | ​ | 6.47 | ​ | $ | 10,483
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable at December 31, 2020 |  | 575 | ​ | $ | 1.62 | ​ | 5.35 | ​ | $ | 6,807
Summary of stock options outstanding under the plans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Outstanding | ​ | Weighted average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Number of | ​ | Remaining | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted Average
​ | ​ | Options | ​ | Contractual | ​ | Weighted Average | ​ | Exercisable Number of | ​ | Remaining Exercisable | ​ | Exercisable
Range |  | (in thousands) |  | Life (years) |  | Strike Price |  | Options (in thousands) |  | Contractual Life (years) |  | Strike Price
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
$0 to $2.00 |  | 473 |  | 4.60 | ​ | $ | 0.35 |  | 401 |  | 4.28 | ​ | $ | 0.33
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
$2.01 to $4.00 |  | 270 |  | 7.66 | ​ | $ | 3.05 |  | 116 |  | 7.43 | ​ | $ | 2.87
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
$4.01 to $6.00 |  | 19 |  | 8.25 | ​ | $ | 4.45 |  | — |  | — | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
$6.01 to $8.00 | ​ | 200 | ​ | 8.56 | ​ | $ | 7.87 | ​ | 50 | ​ | 8.56 | ​ | $ | 7.87
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
$8.01 to $10.00 |  | 41 |  | 8.92 | ​ | $ | 9.22 |  | 8 |  | 8.86 | ​ | $ | 8.98
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
$10.01 to $12.00 | ​ | 3 | ​ | 9.04 | ​ | $ | 10.60 | ​ | — | ​ | — | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 1,006 |  | 6.47 | ​ | $ | 3.04 |  | 575 |  | 5.35 | ​ | $ | 1.62
Schedule of restricted stock award activity under all equity compensation plans | A summary of our unvested stock options as of December 31, 2020 and 2019 and related activity is presented below: ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Non-vested | ​ | ​ | ​
​ | ​ | Shares | ​ | Weighted
​ | ​ | Under | ​ | Average
​ | ​ | Option | ​ | Grant Date
​ |  | (in thousands) |  | Fair Value
Non-vested at December 31, 2018 |  | 569 | ​ | $ | 1.44
Granted |  | 653 | ​ | $ | 5.12
Vested |  | (169) | ​ | $ | 1.24
Forfeited |  | (163) | ​ | $ | 2.44
Non-vested at December 31, 2019 |  | 890 | ​ | $ | 4.03
Non-vested at December 31, 2019 |  | 890 | ​ | $ | 4.03
Granted |  | 14 | ​ | $ | 8.88
Vested |  | (251) | ​ | $ | 3.34
Forfeited |  | (222) | ​ | $ | 4.36
Non-vested at December 31, 2020 |  | 431 | ​ | $ | 4.35
​ A summary of restricted stock award activity under the 2017 Stock Plan for the years ended December 2020 and 2019 are presented below: ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Number of Shares |  | Weighted Average
​ |  | (in thousands) |  | Grant Date Fair Value
Outstanding at December 31, 2018 |  | 76 | ​ | $ | 3.19
Granted |  | 55 | ​ | $ | 8.10
Vested |  | (29) | ​ | $ | 3.24
Outstanding at December 31, 2019 |  | 102 | ​ | $ | 5.81
​ | ​ | ​ | ​ | ​ | ​
Outstanding at December 31, 2019 |  | 102 | ​ | $ | 5.81
Granted |  | 320 | ​ | $ | 12.92
Vested |  | (154) | ​ | $ | 8.54
Outstanding at December 31, 2020 |  | 268 | ​ | $ | 12.64
​

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