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SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of employee and non-employee shares options activity | A summary of employee and non-employee shares options activity during the fiscal year ended 2020 is as follows:
|  | Number |  |  | Average exercise price |  |  | Average remaining contractual life (years) |  |  | Aggregate intrinsic value (in thousands) |
Options outstanding at the beginning of the year |  |  | 74,713 |  |  | $ | 41.6 |  |  |  | 6.34 |  |  | $ | 135 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeited |  |  | (5,107 | ) |  |  | 91.59 |  |  |  | — |  |  |  | — |
Options outstanding at the end of the year |  |  | 69,606 |  |  | $ | 37.9 |  |  |  | 5.59 |  |  | $ | — |
Options exercisable at the end of the year |  |  | 52,997 |  |  | $ | 43.76 |  |  |  | 4.94 |  |  | $ | —
Schedule of employee and non-employee RSUs activity | A summary of employee and non-employee RSUs activity during the fiscal year ended 2020 is as follows:
|  | Number of shares underlying outstanding RSUs |  |  | Weighted- average grant date fair value |
Unvested RSUs at the beginning of the year |  |  | 62,378 |  |  |  | 44.61 |
Granted |  |  | 1,266,185 |  |  |  | 1.44 |
Vested |  |  | (63,111 | ) |  |  | 7.83 |
Forfeited |  |  | (14,141 | ) |  |  | 6.05 |
Unvested RSUs at the end of the year |  |  | 1,251,311 |  |  |  | 3.20
Schedule of options and RSUs outstanding | The number of options and RSUs outstanding as of December 31, 2020 is set forth below, with options separated by range of exercise price:
Range of exercise price |  | Options and RSUs Outstanding as of December 31, 2020 |  |  | Weighted average remaining contractual life (years) (1) |  |  | Options Exercisable as of December 31, 2020 |  |  | Weighted average remaining contractual life (years) (1) |
RSUs only |  |  | 1,251,311 |  |  |  | — |  |  |  | — |  |  |  | — |
$5.37 |  |  | 12,425 |  |  |  | 8.24 |  |  |  | 5,435 |  |  |  | 8.24 |
$20.42- $33.75 |  |  | 36,292 |  |  |  | 5.26 |  |  |  | 27,598 |  |  |  | 4.60 |
$37.14-$38.75 |  |  | 9,992 |  |  |  | 2.99 |  |  |  | 9,992 |  |  |  | 2.99 |
$50-$52.5 |  |  | 8,231 |  |  |  | 6.43 |  |  |  | 7,306 |  |  |  | 6.44 |
$182.5-$524.25 |  |  | 2,666 |  |  |  | 4.84 |  |  |  | 2,666 |  |  |  | 4.84 |
|  |  | 1,320,917 |  |  |  | 5.59 |  |  |  | 52,997 |  |  |  | 4.94 |
(1) | Calculation of weighted average remaining contractual term does not include the RSUs that were granted, which have an indefinite contractual term.
Schedule of non-cash share-based compensation expense | The Company recognized non-cash share-based compensation expense in the consolidated statements of operations as follows (in thousands):
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Cost of revenues |  | $ | 8 |  |  | $ | 13 |  |  | $ | 16 |
Research and development, net |  |  | 136 |  |  |  | 204 |  |  |  | 435 |
Sales and marketing, net |  |  | 163 |  |  |  | 166 |  |  |  | 467 |
General and administrative |  |  | 442 |  |  |  | 725 |  |  |  | 1,848 |
Total |  | $ | 749 |  |  | $ | 1,108 |  |  | $ | 2,766
Schedule of warrants outstanding and exercisable | The following table summarizes information about warrants outstanding and exercisable as of December 31, 2020:
Issuance date |  | Warrants outstanding |  |  | Exercise price per warrant |  |  | Warrants outstanding and exercisable |  | Contractual term
|  | (number) |  |  |  |  |  | (number) |  |
December 31, 2015 (1) |  |  | 4,771 |  |  | $ | 7.500 |  |  |  | 4,771 |  | See footnote (1)
November 1, 2016 (2) |  |  | 97,496 |  |  | $ | 118.750 |  |  |  | 97,496 |  | November 1, 2021
December 28, 2016 (3) |  |  | 1,908 |  |  | $ | 7.500 |  |  |  | 1,908 |  | See footnote (1)
November 20, 2018 (4) |  |  | 126,839 |  |  | $ | 7.500 |  |  |  | 126,839 |  | November 20, 2023
November 20, 2018 (5) |  |  | 106,680 |  |  | $ | 9.375 |  |  |  | 106,680 |  | November 15, 2023
February 25, 2019 (6) |  |  | 45,600 |  |  | $ | 7.187 |  |  |  | 45,600 |  | February 21, 2024
April 5, 2019 (7) |  |  | 408,457 |  |  | $ | 5.140 |  |  |  | 408,457 |  | October 7, 2024
April 5, 2019 (8) |  |  | 49,015 |  |  | $ | 6.503 |  |  |  | 49,015 |  | April 3, 2024
June 5, 2019 and June 6, 2019 (9) |  |  | 1,464,665 |  |  | $ | 7.500 |  |  |  | 1,464,665 |  | June 5, 2024
June 5, 2019 (10) |  |  | 87,880 |  |  | $ | 9.375 |  |  |  | 87,880 |  | June 5, 2024
June 12, 2019 (11) |  |  | 416,667 |  |  | $ | 6.000 |  |  |  | 416,667 |  | December 12, 2024
June 10, 2019 (12) |  |  | 50,000 |  |  | $ | 7.500 |  |  |  | 50,000 |  | June 10, 2024
February 10, 2020 (13) |  |  | 3,768,500 |  |  | $ | 1.250 |  |  |  | 4,343,500 |  | February 10, 2025
February 10, 2020 (14) |  |  | 336,000 |  |  | $ | 1.5625 |  |  |  | 336,000 |  | February 10, 2025
July 6, 2020 (15) |  |  | 2,469,139 |  |  | $ | 1.76 |  |  |  | 2,469,139 |  | July 2, 2025
July 6, 2020 (16) |  |  | 296,297 |  |  |  | 2.2781 |  |  |  | 296,297 |  | July 2, 2025
December 3, 2020 (17) |  |  | 4,184,832 |  |  |  | 1.34 |  |  |  | 4,184,832 |  | June 8, 2026
December 3, 2020 (18) |  |  | 334,787 |  |  |  | 1.7922 |  |  |  | 334,787 |  | June 8, 2026
|  |  | 14,249,533 |  |  |  |  |  |  |  | 14,249,533 |  |
| (1) | Represents warrants for ordinary shares issuable upon an exercise price of $7.5 per share, which were granted on December 31, 2015 to Kreos Capital V (Expert) Fund Limited, or Kreos, in connection with a loan made by Kreos to us and are currently exercisable (in whole or in part) until the earlier of (i) December 30, 2025 or (ii) immediately prior to the consummation of a merger, consolidation, or reorganization of us with or into, or the sale or license of all or substantially all the assets or shares of us to, any other entity or person, other than a wholly-owned subsidiary of us, excluding any transaction in which the Company’s shareholders prior to the transaction will hold more than 50% of the voting and economic rights of the surviving entity after the transaction. None of these warrants had been exercised as of December 31, 2020.
| (2) | Represents warrants issued as part of the Company’s follow-on offering in November 2016. At any time, the board of directors may reduce the exercise price of the warrants to any amount and for any period of time it deems appropriate.
| (3) | Represents common warrants that were issued as part of the $8.0 million drawdown under the Loan Agreement which occurred on December 28, 2016. See footnote 1 for exercisability terms.
| (4) | Represents common warrants that were issued as part of the Company’s follow-on offering in November 2018. As of September 30, 2019, warrants to purchase an aggregate 1,651,537 ordinary shares had been exercised.
| (5) | Represents common warrants that were issued to the underwriters as compensation for their role in the Company’s follow-on offering in November 2018.
| (6) | Represents warrants that were issued to the exclusive placement agent as compensation for its role in the Company’s follow-on offering in February 2019.
| (7) | Represents warrants that were issued to certain institutional purchasers in a private placement in the Company’s registered direct offering of ordinary shares in April 2019.
| (8) | Represents warrants that were issued to the placement agent as compensation for its role in the Company’s April 2019 registered direct offering.
| (9) | Represents warrants that were issued to certain institutional investors in a warrant exercise agreement on June 5, 2019 and June 6, 2019, respectively.
| (10) | Represents warrants that were issued to the placement agent as compensation for its role in the Company’s June 2019 warrant exercise agreement and concurrent private placement of warrants.
| (11) | Represents warrants that were issued to certain institutional investors in a warrant exercise agreement in June 2019.
| (12) | Represents warrants that were issued to the placement agent as compensation for its role in the Company’s June 2019 registered direct offering and concurrent private placement of warrants.
| (13) | Represents warrants that were issued to certain institutional purchasers in a private placement in the Company’s best efforts offering of ordinary shares in February 2020.
| (14) | Represents warrants that were issued to the placement agent as compensation for its role in the Company’s February 2020 best efforts offering.
| (15) | Represents warrants that were issued to certain institutional purchasers in a private placement in our registered direct offering of ordinary shares in July 2020
| (16) | Represents warrants that were issued to the placement agent as compensation for its role in the Company’s July 2020 registered direct offering.
| (17) | Represents warrants that were issued to certain institutional purchasers in a private placement in our private placement offering of ordinary shares in December 2020
| (18) | Represents warrants that were issued to the placement agent as compensation for its role in the Company’s December 2020 private placement.

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -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 S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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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=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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