Quarterly report pursuant to Section 13 or 15(d)

Note 15 - Common stock warrants: Schedule of Series B and Series D common stock warrants (Details)

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Note 15 - Common stock warrants: Schedule of Series B and Series D common stock warrants (Details) - shares
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Series B    
Warrants Outstanding, Starting Balance 0 4,500
Warrants Issued 0 0
Warrants Exercised 0 (4,500)
Warrants Outstanding, Ending Balance 87,456 0
Common Stock Warrants Reinstated [1] 87,456  
Series D    
Warrants Outstanding, Starting Balance 6,666,007 8,206,390
Warrants Issued 0 0
Warrants Exercised (379,436) (1,540,383)
Warrants Outstanding, Ending Balance 6,316,115 6,666,007
Common Stock Warrants Reinstated [1] 29,544  
B and D Total    
Warrants Outstanding, Starting Balance 6,666,007 8,210,890
Warrants Issued 0 0
Warrants Exercised (379,436) (1,544,883)
Warrants Outstanding, Ending Balance 6,403,571 6,666,007
Common Stock Warrants Reinstated [1] 117,000  
[1] See Note 5.