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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