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 6 Months Ended 129 Months Ended
Aug. 08, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Dec. 31, 2017
InControl Medical [Member] | Membership Unit Subscription Agreement [Member]              
Related Party Transaction, Amounts of Transaction   $ 63,000   $ 143,000      
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   2,325,000 $ 1,681,000 5,598,000 $ 3,706,000    
Accounts Payable, Related Parties, Current   1,258,000   1,258,000   $ 1,258,000 $ 1,380,000
InControl Medical [Member] | Membership Unit Subscription Agreement [Member]              
Accounts Payable, Related Parties, Current   $ 22,000   $ 22,000   $ 22,000 $ 28,000