Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Note 9 - Share Capital - Common Shares and Warrants (Details)

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Note 9 - Share Capital - Common Shares and Warrants (Details)
$ in Thousands, $ in Thousands
 12 Months Ended 33 Months Ended
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2017
CAD ($)
shares
Dec. 31, 2016
USD ($)
shares
Dec. 31, 2016
CAD ($)
shares
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2017
USD ($)
shares
Statement Line Items [Line Items]            
Balance (as recast –(note 3(b)) $ 7,328 $ 9,840 $ 13,651   $ 25,233  
Warrant exercises (in shares) | shares         81,000  
Warrant exercises         $ 279  
Expiry of Warrants        
Option exercises         519  
Common shares issued under ATM (b)(ii) (in shares) | shares 10,952,093 10,952,093 3,673,933 3,673,933   20,000,000
Common shares issued under the ATM (note 9(b)(ii)) $ 13,394   $ 5,726   8  
Promissory note conversion         342  
Common shares under the ATM (b)(ii) (in shares) | shares 10,952,093 10,952,093 3,673,933 3,673,933   20,000,000
Common shares under the ATM (b)(ii) $ 13,394   $ 5,726   8  
Common shares issued under share purchase agreement (b(i)) 324          
Common shares issued under redemption of restricted share units          
Balance (as recast –(note 3(b)) $ 10,202   $ 7,328 $ 9,840 $ 13,651 $ 10,202
Issued capital [member]            
Statement Line Items [Line Items]            
Balance (in shares) | shares 15,722,000 15,722,000 12,048,000 12,048,000 11,700,000  
Balance (as recast –(note 3(b)) $ 218,034   $ 212,308   $ 210,454  
Warrant exercises (in shares) | shares         81,000  
Warrant exercises         $ 429  
Warrant expiry (in shares) | shares      
Expiry of Warrants        
Option exercises (in shares) | shares         143,000  
Option exercises         $ 1,075  
Common shares issued under ATM (b)(ii) (in shares) | shares 10,952,000 10,952,000 3,674,000 3,674,000 2,000  
Common shares issued under the ATM (note 9(b)(ii)) $ 13,394   $ 5,726   $ 8  
Promissory note conversion (in shares) | shares         122,000  
Promissory note conversion         $ 342  
Common shares under the ATM (b)(ii) (in shares) | shares 10,952,000 10,952,000 3,674,000 3,674,000 2,000  
Common shares under the ATM (b)(ii) $ 13,394   $ 5,726   $ 8  
Common shares issued under share purchase agreement (b(i)) (in shares) | shares 678,000 678,000        
Common shares issued under share purchase agreement (b(i)) $ 324          
Common shares issued under redemption of restricted share units (in shares) | shares 150,000 150,000        
Common shares issued under redemption of restricted share units $ 171          
Balance (in shares) | shares 27,502,000 27,502,000 15,722,000 15,722,000 12,048,000 27,502,000
Balance (as recast –(note 3(b)) $ 231,923   $ 218,034   $ 212,308 $ 231,923
Warrants [Member]            
Statement Line Items [Line Items]            
Balance (in shares) | shares 73,000 73,000 209,000  
Balance (as recast –(note 3(b))   $ 85   $ 485  
Warrant exercises (in shares) | shares         (81,000)  
Warrant exercises         $ (150)  
Warrant expiry (in shares) | shares     (73,000) (73,000) (55,000)  
Expiry of Warrants     $ (85)   $ (250)  
Option exercises (in shares) | shares          
Option exercises          
Common shares issued under ATM (b)(ii) (in shares) | shares      
Common shares issued under the ATM (note 9(b)(ii))      
Promissory note conversion (in shares) | shares          
Promissory note conversion          
Common shares under the ATM (b)(ii) (in shares) | shares      
Common shares under the ATM (b)(ii)      
Common shares issued under share purchase agreement (b(i))          
Common shares issued under redemption of restricted share units          
Balance (in shares) | shares     73,000  
Balance (as recast –(note 3(b))     $ 85