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Note 18 - Subsequent Events (Details Textual)
$ / shares in Units, $ in Thousands, $ in Millions
 3 Months Ended 12 Months Ended
Jan. 01, 2023
CAD ($)
$ / shares
shares
Dec. 01, 2022
CAD ($)
$ / shares
shares
Feb. 27, 2023
CAD ($)
shares
Nov. 30, 2022
CAD ($)
shares
Dec. 30, 2022
USD ($)
Dec. 10, 2021
USD ($)
Major ordinary share transactions [member] | NevGold [member]            
Statement Line Items [Line Items]            
Purchase of equity, number of shares received (in shares) | shares 3,658,536          
Purchase of equity, shares received amount $ 1,500          
Purchase of equity, price per share (in CAD per share) | $ / shares $ 0.41          
Brokered private placement [member] | Potential ordinary share transactions [member] | NevGold [member]            
Statement Line Items [Line Items]            
Purchase of equity, number of units (in shares) | shares   2,976,200        
Purchase of equity, purchase price   $ 1,250        
Purchase of units, price per unit (in CAD per share) | $ / shares   $ 0.42        
Units purchased, number of shares per unit (in shares) | shares   1        
Units purchased, number of warrants per unit (in shares) | shares   0.50        
Class of warrant, exercise price of warrant (in CAD per share) | $ / shares   $ 0.60        
ATM program [member]            
Statement Line Items [Line Items]            
Issue of equity, maximum distribution amount           $ 50
Issue of equity, number of shares (in shares) | shares       12,653,643    
Proceeds from issuing shares       $ 18,452    
Payments for share issue costs       $ 460    
ATM program [member] | Potential ordinary share transactions [member]            
Statement Line Items [Line Items]            
Issue of equity, maximum distribution amount         $ 50  
ATM program [member] | Major ordinary share transactions [member]            
Statement Line Items [Line Items]            
Issue of equity, number of shares (in shares) | shares     4,139,920      
Proceeds from issuing shares     $ 7,600      
Payments for share issue costs     $ 200