Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Related Party Transactions (Details Textual)

v3.10.0.1
Note 11 - Related Party Transactions (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 132 Months Ended
Aug. 08, 2017
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Dec. 31, 2017
Payments to Acquire Equity Method Investments       $ 2,500,000    
InControl Medical [Member] | Membership Unit Subscription Agreement [Member]              
Payments to Acquire Equity Method Investments $ 2,500,000     2,500,000      
Stellartech Research Corporation [Member]              
Stock Issued During Period, Shares, New Issues           37,500  
Related Party Transaction, Amounts of Transaction   $ 3,015,000 $ 2,620,000 8,613,000 $ 6,326,000    
Accounts Payable, Related Parties, Current   1,162,000   1,162,000   $ 1,162,000 $ 1,380,000
InControl Medical [Member] | Membership Unit Subscription Agreement [Member]              
Related Party Transaction, Amounts of Transaction   81,000   224,000      
Accounts Payable, Related Parties, Current   $ 27,000   $ 27,000   $ 27,000 $ 28,000