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STOCK-BASED COMPENSATION PLANS (Tables) | 6 Months Ended
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Jun. 30, 2021
STOCK-BASED COMPENSATION PLANS |
Schedule of outstanding and exercisable number of options | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | Outstanding |  | Exercisable
​ | ​ | Number of Options | ​ | Number of Options
​ | ​ | (in thousands) | ​ | (in thousands)
Plan Category |  |  |  | ​ |
2005 Stock Option Plan |  | 295 |  | ​ | 295
Equity Compensation Plans not approved by Shareholders |  | 37 |  | ​ | 37
2017 Stock Option Plan |  | 412 |  | ​ | 265
Total |  | 744 | ​ | ​ | 597
Schedule of share based compensation expenses recorded in the consolidated statement of income | The following summarizes stock-based compensation expenses recorded in the consolidated statements of operations (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended June 30, |  | For the Six Months Ended June 30, | ​
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020 | ​
Cost of Revenue | ​ | $ | 15 | ​ | $ | 2 | ​ | $ | 30 | ​ | $ | 9 | ​
Sales and marketing expense | ​ |  | 15 | ​ |  | 98 | ​ |  | 30 | ​ |  | 127 | ​
General, and administrative | ​ | ​ | 371 | ​ | ​ | 479 | ​ | ​ | 449 | ​ | ​ | 940 | ​
Total stock based compensation expense | ​ | ​ | 401 | ​ | ​ | 579 | ​ | ​ | 509 | ​ | ​ | 1,076 | ​
Summary of fair value of stock options grants | The Company did not grant any stock options during the three and six months ended June 30, 2021, nor during the three months ended June 30, 2020. The Company used the Black Scholes option pricing model to determine the fair value of stock option grants, using the following assumptions for the six months ended June 30, 2020: ​
​ | ​ | ​ | ​
Expected term (years) | ​ | 6.79 | ​
Risk-free interest rate | ​ | 1.59 | %
Expected volatility | ​ | 116.76 | %
Expected dividend yield | ​ | — | %
Summary of stock option activity under the option plan | A summary of stock option activity under all equity compensation plans for the six months ended June 30, 2021, is presented below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted- | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted- | ​ | Average | ​ | Aggregate
​ | ​ | Number of | ​ | Average | ​ | Remaining | ​ | Intrinsic
​ | ​ | Shares | ​ | Exercise | ​ | Contractual | ​ | Value
​ |  | (in thousands) |  | Price |  | Term (Years) |  | (in thousands)
Outstanding at December 31, 2020 |  | 1,006 | ​ | $ | 3.04 | ​ | 6.47 | ​ | $ | 10,483
Forfeited |  | (190) | ​ | $ | 7.34 | ​ | ​ | ​ |  | ​
Exercised | ​ | (72) | ​ | $ | 6.90 | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2021 |  | 744 | ​ | $ | 1.57 | ​ | 5.29 | ​ | $ | 10,386
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable at June 30, 2021 |  | 597 | ​ | $ | 1.01 | ​ | 4.78 | ​ | $ | 8,674
Schedule of restricted stock award activity under all equity compensation plans | A summary of restricted stock award activity under all equity compensation plans for the six months ended June 30, 2021, is presented below: ​
​ | ​ | ​
​ | ​ | Number of
​ | ​ | Shares
​ |  | (in thousands)
Granted but not vested at December 31, 2020 |  | 268
Granted |  | 95
Forfeited |  | (68)
Vested |  | (71)
Granted but not vested at June 30, 2021 |  | 224

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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