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Stock-based Compensation | 6 Months Ended
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Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-based Compensation | NOTE 8 —Stock-based Compensation Stock-based compensation expense for the three and six months ended June 30, 2021, and 2020 is as follows:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Cost of revenues |  | $ | 16 |  |  | $ | 13 |  |  | $ | 32 |  |  | $ | 23 |
Sales and marketing |  | 55 |  |  | 49 |  |  | 111 |  |  | 106 |
General and administrative |  | 63 |  |  | 102 |  |  | 237 |  |  | 198 |
Research and development |  | 45 |  |  | 71 |  |  | 95 |  |  | 131 |
|  | $ | 179 |  |  | $ | 235 |  |  | $ | 475 |  |  | $ | 458 |
Stock Options: Stock option activity for the six months ended June 30, 2021, is as follows:
|  |  |  |  |  |  |  |  |  | Weighted average |  |  |  |  |
|  |  |  |  |  | Weighted average |  |  |  | remaining |  |  |  | Aggregate |
|  |  |  |  |  | exercise price |  |  |  | contractual life |  |  |  | Intrinsic |
|  | Options |  |  |  | per share |  |  |  | (in years) |  |  |  | Value* |
Outstanding at January 1, 2021 |  | 1,443,940 |  |  | $ | 3.64 |  |  |  | 7.82 |  |  | $ | 24 |
Options granted |  | — |  |  | $ | — |  |  |  |  |  |  |  |  |
Options exercised |  | (7,082 | ) |  | $ | 0.75 |  |  |  |  |  |  |  |  |
Options forfeited |  | (128,070 | ) |  | $ | 2.92 |  |  |  |  |  |  |  |  |
Options expired |  | (49,330 | ) |  | $ | 4.14 |  |  |  |  |  |  |  |  |
Outstanding at June 30, 2021 |  | 1,259,458 |  |  | $ | 3.71 |  |  |  | 6.93 |  |  | $ | 9 |
Exercisable at June 30, 2021 |  | 734,636 |  |  | $ | 4.09 |  |  |  | 5.88 |  |  | $ | 9 |
*The intrinsic value is calculated as the difference between the exercise price and the fair value of the common stock on the balance sheet date. As of June 30, 2021, there was approximately $2,443 of unamortized stock-based compensation cost related to unvested stock options, which is expected to be recognized over a weighted average period of approximately three years. Restricted Stock Units: Restricted stock units’ activity for the six months ended June 30, 2021, is as follows:
|  | RSUs |
Outstanding at January 1, 2021 |  |  | 2,691,375 |
Granted |  |  | 467,482 |
Released |  |  | (535,375 | )
Forfeited |  |  | (525,000 | )
Outstanding at June 30, 2021 |  |  | 2,098,482 |
Exercisable June 30, 2021 |  |  | — |
As of June 30, 2021, unvested restricted stock units (“RSU’s) totaled 2,098,482 shares. There were 467,482 RSU’s issued for the six months ended June 30, 2021, and 2,015,500 RSU’s issued for the six months ended June 30, 2020.

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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- References No definition available. + Details
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