Annual report pursuant to Section 13 and 15(d)

Note 8 - Commitments and Contingencies (Details Textual)

v3.19.1
Note 8 - Commitments and Contingencies (Details Textual)
1 Months Ended 4 Months Ended 12 Months Ended
May 31, 2017
USD ($)
Apr. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
ft²
Dec. 31, 2017
USD ($)
Dec. 31, 2015
USD ($)
ft²
Operating Leases, Rent Expense, Total     $ 164,000 $ 161,000  
Chief Scientific Officer [Member]          
Officers' Yearly Compensation     $ 500,000    
UNITED STATES          
Number of Facilities     1    
CHINA          
Number of Facilities     1    
Lease Monthly Payment     $ 3,800    
Germantown, MD [Member]          
Area of Real Estate Property | ft²     1,500    
Lease Monthly Payment     $ 5,700    
San Diego, CA [Member]          
Area of Real Estate Property | ft²         3,100
Lease Monthly Payment         $ 12,000
Gain (Loss) on Termination of Lease $ (92,000) $ (50,000)      
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals     $ 87,000