Current report filing

Note 13 - Subsequent Events (Details Textual)

v3.19.1
Note 13 - Subsequent Events (Details Textual) - USD ($)
3 Months Ended 5 Months Ended 9 Months Ended
Jun. 08, 2018
Sep. 30, 2018
Sep. 30, 2017
Mar. 11, 2019
Sep. 30, 2018
Sep. 30, 2017
The 2018 ATM Offering [Member]            
Stock Issued During Period, Shares, New Issues         2,017,046  
Shares Issued, Price Per Share   $ 3.49     $ 3.49  
Proceeds from Issuance of Common Stock         $ 7,000,000  
Proceeds from Issuance of Common Stock, Net   $ 1,579,000   $ 6,827,000
Stock Issuance, Percent of Cash Commission to Issuer   3.00%     3.00%  
The 2018 ATM Offering [Member] | Subsequent Event [Member]            
Stock Issued During Period, Shares, New Issues       2,145,918    
Shares Issued, Price Per Share       $ 1.96    
Proceeds from Issuance of Common Stock       $ 4,200,000    
Proceeds from Issuance of Common Stock, Net       $ 4,070,000    
Stock Issuance, Percent of Cash Commission to Issuer       3.00%    
The 2018 Purchase Agreement [Member]            
Stock Issued During Period, Shares, New Issues 170,261          
The 2018 Purchase Agreement [Member] | Subsequent Event [Member]            
Stock Issued During Period, Shares, New Issues       4,167,502    
Shares Issued, Price Per Share       $ 1.90    
Proceeds from Issuance of Private Placement, Net       $ 7,930,000