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Note 11 - Convertible Note Arrangement (Details Textual)
 12 Months Ended
Nov. 27, 2024
CAD ($)
$ / shares
shares
Nov. 27, 2024
USD ($)
$ / shares
shares
Mar. 21, 2024
CAD ($)
$ / shares
shares
Mar. 21, 2024
USD ($)
shares
Feb. 27, 2024
$ / shares
Feb. 13, 2023
CAD ($)
$ / shares
shares
Feb. 13, 2023
USD ($)
Dec. 31, 2024
CAD ($)
$ / shares
Dec. 31, 2023
CAD ($)
Dec. 31, 2022
CAD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2024
USD ($)
$ / shares
Nov. 27, 2024
USD ($)
$ / shares
shares
Feb. 13, 2024
USD ($)
Jan. 31, 2024
$ / shares
Dec. 31, 2023
$ / shares
Feb. 13, 2023
USD ($)
$ / shares
shares
Statement Line Items [Line Items]                                  
Repayments of borrowings, classified as financing activities               $ (0) $ 48,036,000 $ (0)              
Interest paid, classified as financing activities               (0) 1,656,000 3,183,000              
Payments for debt issue costs $ 903,000             (0) 2,100,000 (0)              
Increase (decrease) through conversion of interest on convertible instruments, equity               543,000 795,000                
Proceeds from issuing shares               0 0 3,701,000              
Shares issued, price per share (in dollars per share) | $ / shares         $ 3.24                        
Capital reserve [member]                                  
Statement Line Items [Line Items]                                  
Increase (decrease) through conversion of interest on convertible instruments, equity               $ 0 0                
Debt issue related cost $ 180,000                                
Ordinary shares [member]                                  
Statement Line Items [Line Items]                                  
Increase (decrease) in number of shares outstanding, issue of equity (in shares) | shares 460,405 460,405                              
Proceeds from issuing shares $ 1,401,000                                
Shares issued, price per share (in dollars per share) | $ / shares   $ 2.172                              
The 2028 warrants [member]                                  
Statement Line Items [Line Items]                                  
Class of warrants or rights, number of securities called by warrants or rights 1 (in shares) | shares           2,699,014                     2,699,014
Warrants and rights outstanding, term 1 (Year)           5 years 5 years                    
Class of warrant or right, exercise price (in dollars per share) | (per share) $ 3.4                           $ 4   $ 9.92
Class of warrant or right, acceleration clause, period (Day) 30 days 30 days                              
Class of warrant or right, acceleration clause, stock price trigger (in CAD per share) | $ / shares $ 3.4             $ 4.8                  
Class of warrant or right, threshold percentage of stock price trigger 20.00% 20.00%                              
Class of warrant or right, acceleration clause, threshold consecutive trading days 10                       10        
Class of warrant or right, acceleration clause, period before reduced term after trigger (Day) 7 days 7 days                              
The 2027 warrants [member]                                  
Statement Line Items [Line Items]                                  
Class of warrants or rights, number of securities called by warrants or rights 1 (in shares) | shares 1,136,364                       1,136,364        
Warrants and rights outstanding, term 1 (Year) 2 years 2 years                              
Class of warrant or right, exercise price (in dollars per share) | $ / shares $ 4                                
Payments for debt issue costs $ 89,000                                
Share price (in CAD per share) | $ / shares $ 2.72                                
The 2027 warrants [member] | Interest rate, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities 0.032                       0.032        
The 2027 warrants [member] | Historical volatility for shares, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities 0.70                       0.70        
The 2027 warrants [member] | Expected dividends, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities 0                       0        
Warrants issued on August 23, 2023 [member]                                  
Statement Line Items [Line Items]                                  
Class of warrant or right, exercise price (in dollars per share) | $ / shares $ 6.84                                
The 2028 notes [member]                                  
Statement Line Items [Line Items]                                  
Notional amount           $ 68,049,000                     $ 51,000,000
Borrowings, interest rate     8.99% 8.99%   8.99%                     8.99%
Borrowings, convertible, number of equity instruments upon conversion (in shares) | shares           100,804                     100,804
Borrowings, convertible, principal amount denomination for conversion                                 $ 1,000
Borrowings, convertible, conversion price (in dollars per share) | $ / shares                                 $ 9.92
Borrowing, interest rate if green bond designation acheived           8.75%                     8.75%
Borrowings, interest, make-whole payments, period (Year)           2 years 2 years                    
Borrowings, covenant, percentage of royalty on operating revenue for first twelve months           0.60% 0.60%                    
Borrowings, covenant, percentage of royalty on revenue from refinery from second to fifth years           0.60% 0.60%                    
Royalty payments, cumulative cap                                 $ 6,000,000
Interest paid, classified as financing activities           $ 1,656,000                      
Net proceeds from borrowings           20,013,000                      
Payments for debt issue costs           $ 2,340,000                      
Share price (in CAD per share) | (per share)           $ 8.92           $ 1.807       $ 1.46  
Increase (decrease) through conversion of interest on convertible instruments, equity     $ 543 $ 401                          
Increase (decrease) in number of shares outstanding, conversion of interest on convertible instruments (in shares) | shares     210,760 210,760                          
Borrowings, covenant, minimum liquidity balance                       $ 2,000   $ 2,000,000      
Proceeds from borrowings, classified as financing activities $ 9,157,000 $ 6,521,000           $ 0 68,049,000 0              
Interest payable               $ 2,799,000 $ 5,730,000                
Shares issued, price per share (in dollars per share) | $ / shares     $ 2.5756                            
The 2028 notes [member] | Interest rate, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities           0.0396   0.04393 0.0385     0.04393         0.0396
The 2028 notes [member] | Historical volatility for shares, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities           0.56   0.63 0.62     0.63         0.56
The 2028 notes [member] | Credit spread, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities           0.289   0.263 0.278     0.263         0.289
The 2026 notes [member]                                  
Statement Line Items [Line Items]                                  
Borrowings, interest rate           6.95%                     6.95%
Repayments of borrowings, classified as financing activities           $ 48,035,000 $ 36,000,000                    
Interest paid, classified as financing activities           68,049,000 $ 51,000,000       $ 485,000            
Gain (loss) on extinguishment of debt 1           $ 18,727,000                      
The 2027 notes [member]                                  
Statement Line Items [Line Items]                                  
Notional amount $ 5,615,000                       $ 4,000,000        
Borrowings, interest rate 12.00%                       12.00%        
Borrowings, convertible, number of equity instruments upon conversion (in shares) | shares 240,211                       240,211        
Borrowings, convertible, principal amount denomination for conversion                         $ 1,000        
Borrowings, convertible, conversion price (in dollars per share) | $ / shares                         $ 2.4978        
Payments for debt issue costs $ 633,000                                
Share price (in CAD per share) | $ / shares                       $ 1.807 $ 1.938        
Borrowings, covenant, minimum liquidity balance                         $ 2,000,000        
Proceeds from borrowings, classified as financing activities   4,000,000           $ 5,498,000 $ 0 $ 0              
Proceeds from issuing shares   $ 5,000,000                              
The 2027 notes [member] | Ordinary shares [member]                                  
Statement Line Items [Line Items]                                  
Increase (decrease) in number of shares outstanding, issue of equity (in shares) | shares 443,225 443,225                              
The 2027 notes [member] | Interest rate, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities 0.04268             0.0439       0.0439 0.04268        
The 2027 notes [member] | Historical volatility for shares, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities 0.63             0.63 0     0.63 0.63        
The 2027 notes [member] | Credit spread, measurement input [member]                                  
Statement Line Items [Line Items]                                  
Significant unobservable input, liabilities 0.26             0.263 0     0.263 0.26