Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details)

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Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Revenue from contract with customer $ 15,000 $ 14,000
Royalty [Member]    
Revenue from contract with customer 15,221 3,150
Royalty [Member] | Diagnostics Segment [Member]    
Revenue from contract with customer 15,221 3,150
Product and Service, Other [Member] | Diagnostics Segment [Member]    
Revenue from contract with customer   11,024
Europe [Member] | Royalty [Member] | Diagnostics Segment [Member]    
Revenue from contract with customer $ 15,221 $ 3,150