Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Commitments and Contingencies (Details Textual)

v3.19.2
Note 5 - Commitments and Contingencies (Details Textual)
6 Months Ended
Jun. 30, 2019
USD ($)
ft²
Dec. 31, 2015
ft²
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 13,000  
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals $ 27,100