Quarterly report pursuant to Section 13 or 15(d)

Note 1 - The Company and Basis of Presentation (Details Textual)

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Note 1 - The Company and Basis of Presentation (Details Textual) - USD ($)
6 Months Ended
Jun. 17, 2016
Jun. 30, 2016
Jun. 30, 2015
May 09, 2016
Dec. 31, 2015
[1]
June 2016 Offering [Member]          
Stock Issued During Period, Shares, New Issues 3,105,000        
Share Price $ 5        
Proceeds from Issuance of Common Stock $ 15,525,000        
Proceeds From Issuance of Common Stock, Net $ 13,857,000        
Proceeds from Issuance of Common Stock   $ 13,857,000 $ 11,040,000    
Common Stock, Par or Stated Value Per Share   $ 0.0001   $ 0.0001 $ 0
[1] The condensed consolidated balance sheet as of December 31, 2015 has been derived from the audited consolidated financial statements as of that date.