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

Note 9 - Share Capital (Details Textual)

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Note 9 - Share Capital (Details Textual)
 1 Months Ended 12 Months Ended 33 Months Ended
Oct. 31, 2017
USD ($)
shares
Oct. 27, 2017
USD ($)
shares
Dec. 31, 2013
$ / shares
Jun. 30, 2013
$ / shares
Aug. 31, 2011
$ / shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Dec. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2017
$ / shares
shares
Apr. 02, 2015
USD ($)
Statement Line Items [Line Items]                    
Sale of Stock, Maximum Offering Value                   $ 20,000,000
Number of Shares Issued During the Period | shares           10,952,093 3,673,933   20,000,000  
Proceeds from Issuing Shares, Gross           $ 13,900,000 $ 6,050,000      
Proceeds from issuing shares           $ 13,394,000 $ 5,726,000 $ 8,000    
Shares Issued, Price Per Share | $ / shares           $ 1.27 $ 1.65   $ 1.27  
Equity Issuance, Commission Percentage           3.00% 3.00%   3.00%  
Expiry of Warrants                
Increase (decrease) through exercise of warrants, equity               $ 279,000    
Aspire purchase agreement [member]                    
Statement Line Items [Line Items]                    
Sale of Stock, Maximum Offering Value   $ 15,500,000                
Number of Shares Issued During the Period | shares 357,143 321,429                
Proceeds from Issuing Shares, Gross $ 500                  
Proceeds from issuing shares $ 324                  
Warrants [Member]                    
Statement Line Items [Line Items]                    
Number of Shares Issued During the Period | shares                
Number of Warrants Expired | shares             73,000 55,000    
Expiry of Warrants             $ 85,000 $ 250,000    
Increase (decrease) through exercise of warrants, equity               $ (150,000)    
Issued capital [member]                    
Statement Line Items [Line Items]                    
Number of Shares Issued During the Period | shares           10,952,000 3,674,000 2,000    
Number of Warrants Expired | shares                
Expiry of Warrants                
Increase (decrease) through exercise of warrants, equity               429,000    
August 2011 Warrants [Member]                    
Statement Line Items [Line Items]                    
Increase (decrease) through exercise of warrants, equity [1]               68,000    
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares         $ 5.40          
June 2013 Private Placement Warrants [Member]                    
Statement Line Items [Line Items]                    
Increase (decrease) through exercise of warrants, equity [2]               115,000    
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares       $ 3            
December 2013 Broker Warrants [Member]                    
Statement Line Items [Line Items]                    
Increase (decrease) through exercise of warrants, equity [3]               $ 96,000    
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 6.60              
[1] August 2011 warrants were exercisable into common shares of Aptose at a price per share of $5.40 and expired in August 2016.
[2] June 2013 private placement warrants were exercisable into common shares of Aptose at a price per share of $3.00 and expired in June 2015.
[3] December 2013 broker warrants were exercisable into common shares of Aptose at a price per share of $6.60 and expired in December 2015.