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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) segment shares | Dec. 31, 2020 USD ($) segment shares | Dec. 31, 2019 USD ($) shares | Jan. 01, 2022 USD ($) | Aug. 19, 2021 USD ($)
Accounting Policies [Line Items] |  |  |  |  |
Short-term deposits | $ 0 | $ 1,667,000 |  |  |
Deferred transaction costs | 0 |  |  |  |
Deferred transaction costs capitalized |  | 328,000 |  |  |
Inventory write-off | $ 251,000 | 70,000 | $ 109,000 |  |
Employee maximum contribution, percentage of monthly salary | 8.33% |  |  |  |
Severance pay expense | $ 842,000 | $ 386,000 | $ 167,000 |  |
Weighted average number of shares excluded from calculation of diluted net loss per share (in shares) | shares | 70,721,964 | 90,692,220 | 82,269,251 |  |
Unrecognized tax positions | $ 856,000 | $ 0 | $ 0 |  |
Deferred revenue | 943,000 | 0 |  |  |
Capitalized costs | 943,000 |  |  |  |
Remaining performance obligations | 943,000 |  |  |  |
Cost of sales | $ 995,000 | $ 647,000 | $ 490,000 |  |
Number of operating segments | segment | 1 | 2 |  |  |
Share-based Payment Arrangement, Option |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Expected dividend yield | 0.00% | 0.00% | 0.00% |  |
Forecast | Accounting Standards Update 2016-02 | Minimum |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Estimated increase to total lease assets and total lease liabilities |  |  |  | $ 8,000,000 |
Forecast | Accounting Standards Update 2016-02 | Maximum |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Estimated increase to total lease assets and total lease liabilities |  |  |  | $ 9,700,000 |
Production Line In Canada |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Cost of sales |  | $ 198,000 |  |  |
US |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Matching contribution, percentage of participant annual compensation | 4.00% |  |  |  |
Employer expenses related to defined contribution plan | $ 76,000 | 5,000 |  |  |
Foreign Plan |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Matching contribution, percentage of participant annual compensation | 3.00% |  |  |  |
Employer expenses related to defined contribution plan | $ 119,000 |  |  |  |
IIA |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Royalty-bearing grants | 0 | 0 | $ 0 |  |
BIRD |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Royalty-bearing grants | 105,000 | 0 | 202,000 |  |
INEA |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Grants received | 72,000 | $ 274,000 | $ 256,000 |  |
APC |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Royalty-bearing grants | $ 0 |  |  |  |
Grants received |  |  |  |  | $ 17,000,000
Investment received |  |  |  |  | $ 57,000,000

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