v3.19.3
Note 6 - Commitments and Contingencies (Details Textual) - USD ($)
1 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2019
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Note To Financial Statement Details Textual          
Litigation Settlement, Amount Awarded from Other Party $ 635,000        
Proceeds from Legal Settlements   $ 443,000      
Operating Lease, Expense   $ 282,000 $ 174,000 $ 232,000 $ 225,000