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

Note 14 - Related Party Transactions (Details Textual)

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Note 14 - Related Party Transactions (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
May 31, 2017
Dec. 31, 2015
Mar. 31, 2015
Statement Line Items [Line Items]          
Services to be received, related party transactions, maximum     $ 300,000   $ 200,000
Services received, related party transactions $ 240,000 $ 168,000      
Amounts payable, related party transactions $ 484,000 $ 261,000   $ 9,000