SHAREHOLDERS' EQUITY - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| SHARE CAPITAL | ||||||
| Stock-based compensation expense recognized | $ 210 | $ 88 | $ 818 | $ 456 | $ 548 | $ 1,200 |
| Unrecognized compensation cost | $ 925 | $ 925 | $ 595 | |||
| Unvested stock options (in shares) | 378,092 | 378,092 | 1,390,399 | |||
| Weighted-average remaining vesting period | 2 years 2 months 12 days | 2 years 3 months 18 days | ||||
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Number of non-vested options outstanding. No definition available.
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