Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Note 4 - Capital Disclosures (Details Textual)

v3.10.0.1
Note 4 - Capital Disclosures (Details Textual) - USD ($)
Sep. 30, 2018
May 30, 2018
Mar. 31, 2018
Mar. 28, 2018
Dec. 31, 2017
Statement Line Items [Line Items]          
Maximum equity authorised     $ 100,000,000    
Total cash $ 832,000       $ 3,225,000
Total cash equivalents $ 14,224,000       $ 7,406,000
Investments, Interest Rate 1.45%       1.45%
Aspire purchase agreement 2018 [member]          
Statement Line Items [Line Items]          
Sale of Stock, Maximum Offering Value   $ 20,000,000      
Cantor Fitzgerald [member]          
Statement Line Items [Line Items]          
Sale of Stock, Maximum Offering Value       $ 30,000,000