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SHARE-BASED PAYMENTS (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of share-based compensation, stock options, activity | The summary of the Company’s stock options at December 31, 2020, 2019 and 2018, respectively, and the changes for the fiscal periods ending on those dates are presented below:
| Range of Exercise Prices |  | Weighted Average Exercise Price |  | Number of Options
Balance, December 31, 2017 | $1.77 - $15.61 |  | $ | 4.48 |  |  | 2,028,847 |
Granted | 1.70 - 2.88 |  | 1.75 |  |  | 442,956 |
Exercised | 1.70 - 2.55 |  | 2.15 |  |  | (355,092) |
Forfeited | 1.70 - 6.63 |  | 3.96 |  |  | (213,393) |
Expired | 5.86 - 10.36 |  | 8.18 |  |  | (170,564) |
Balance, December 31, 2018 | $1.70 - $15.61 |  | $ | 3.84 |  |  | 1,732,754 |
Granted | 2.92 |  |  | 2.92 |  |  | 296,450 |
Exercised | 1.70 - 2.92 |  | 2.27 |  |  | (54,805) |
Forfeited | 1.70 - 7.42 |  | 3.94 |  |  | (342,866) |
Expired | 6.97 |  | 6.97 |  |  | (144,100) |
Balance, December 31, 2019 | $1.70 - $15.61 |  | $ | 3.43 |  |  | 1,487,433 |
Granted | 1.76 - 3.06 |  | 1.77 |  |  | 711,414 |
Exercised | 1.70 - 2.92 |  | 1.97 |  |  | (302,707) |
Forfeited | 1.70 - 5.18 |  | 3.26 |  |  | (188,541) |
Expired | 4.12 - 5.22 |  | 4.40 |  |  | (98,512) |
Balance, December 31, 2020 | $1.70 - $15.61 |  | $ | 2.91 |  |  | 1,609,087 |
Schedule of share-based compensation, shares authorized under stock option plans, by exercise price range | As of December 31, 2020, the outstanding stock options denominated in USD$ were as follows:
| Options Outstanding |  | Options Exercisable
Exercise price | Quantity |  | Weighted Average Price |  | Weighted Average Remaining Contractual Life |  | Intrinsic Value |  | Quantity |  | Weighted Average Price |  | Weighted Average Remaining Contractual Life |  | Intrinsic Value
$— to $4.99 | 1,449,587 |  |  | $ | 2.41 |  |  | 2.91 |  | $ | 2,731 |  |  | 1,045,597 |  |  | $ | 2.59 |  |  | 2.61 |  | $ | 1,803 |
$5.00 to $9.99 | 133,235 |  |  | $ | 6.16 |  |  | 1.52 |  | — |  |  | 133,235 |  |  | 6.16 |  |  | 1.52 |  | — |
$10.00 to $14.99 | 13,515 |  |  | $ | 12.59 |  |  | 0.27 |  | — |  |  | 13,515 |  |  | 12.59 |  |  | 0.27 |  | — |
$15.00 to $19.99 | 12,750 |  |  | $ | 15.61 |  |  | 0.03 |  | — |  |  | 12,750 |  |  | $ | 15.61 |  |  | 0.03 |  | — |
| 1,609,087 |  |  |  |  |  |  | $ | 2,731 |  |  | 1,205,097 |  |  |  |  |  |  | $ | 1,803 |
Schedule of compensation costs for share-based payment arrangements | The share-based compensation recorded during the years ended December 31, 2020, 2019 and 2018 are as follows:
| Years ended December 31,
| 2020 |  | 2019 |  | 2018
Share-based compensation (1)(2) | $ | 2,598 |  |  | $ | 3,771 |  |  | $ | 2,762 |
(1)The fair value of the options granted under the Equity Incentive Plan for the years ended December 31, 2020, 2019 and 2018 was estimated at the date of grant, using the Black-Scholes Option Valuation Model, with the following weighted average assumptions:
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions |
| Years ended December 31, |
| 2020 |  | 2019 |  | 2018 |
Risk-free interest rate | 1.27 | % |  | 2.62 | % |  | 2.84 | % |
Expected life | 4.6 years |  | 5.0 years |  | 5.0 years |
Expected volatility | 61.81 | % |  | 59.38 | % | * | 59.00 | % | *
Expected dividend yield | 0 | % |  | 0 | % |  | 0 | % |
Weighted average grant date fair value | $ | 0.82 |  |  | $ | 1.54 |  |  | $ | 0.96 |  |
* Expected volatility is measured based on the Company’s historical share price volatility over a period equivalent to the expected life of the options. (2)The fair value of the RSUs granted under the Equity Incentive Plan for the years ended December 31, 2020, 2019 and 2018, was estimated at the date of grant, using the stated market price.
Schedule of share-based compensation, restricted stock and restricted stock units activity | A summary of the status and activity of non-vested stock options at December 31, 2020 is as follows:
| Number of Shares |  | Weighted Average Grant Date Fair Value
Non-vested December 31, 2017 | 365,180 |  |  | $ | 1.20 |
Granted | 442,956 |  |  | 0.96 |
Vested | (448,662) |  |  | 1.10 |
Forfeited | (62,430) |  |  | 0.96 |
Non-vested December 31, 2018 | 297,044 |  |  | $ | 1.06 |
Granted | 296,450 |  |  | 1.54 |
Vested | (356,626) |  |  | 1.27 |
Forfeited | (13,487) |  |  | 1.59 |
Non-vested December 31, 2019 | 223,381 |  |  | $ | 1.32 |
Granted | 711,414 |  |  | 0.82 |
Vested | (508,630) |  |  | 0.94 |
Forfeited | (22,175) |  |  | 0.96 |
Non-vested December 31, 2020 | 403,990 |  |  | $ | 0.94 |
A summary of the status and activity of non-vested RSUs at December 31, 2020 is as follows:
| Number of Shares |  | Weighted Average Grant Date Fair Value
Non-vested December 31, 2017 | 1,909,477 |  |  | $ | 2.17 |
Granted | 1,191,132 |  |  | 1.70 |
Vested | (1,486,126) |  |  | 2.24 |
Forfeited | (34,296) |  |  | 2.00 |
Non-vested December 31, 2018 | 1,580,187 |  |  | $ | 1.99 |
Granted | 731,435 |  |  | 2.91 |
Vested | (862,378) |  |  | 2.00 |
Forfeited | (133,708) |  |  | 2.40 |
Non-vested December 31, 2019 | 1,315,536 |  |  | $ | 2.45 |
Granted | 740,998 |  |  | 1.65 |
Vested | (746,477) |  |  | 2.45 |
Forfeited | (216,001) |  |  | 2.13 |
Non-vested December 31, 2020 | 1,094,056 |  |  | $ | 1.98 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -URI http://asc.fasb.org/extlink&oid=116856206&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=116856206&loc=d3e5070-113901 + Details
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