v3.25.2
Note 7 - Commitments and Contingencies (Details Textual)
6 Months Ended
Oct. 02, 2014
Jun. 30, 2025
USD ($)
Feb. 08, 2024
USD ($)
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]      
Disposal Group, Including Discontinued Operation, Consideration     $ 12,500,000
Asset Pledged as Collateral [Member] | Surety Bond [Member]      
Money Market Funds, at Carrying Value   $ 1,462,280  
Contract With the DOE for the Irradiation of Cobalt Targets [Member]      
Contract Term (Year) 10 years    
Other Commitments, Annual Fixed Price, Escalation Percent 5.00%    
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]      
Number of Major Customers   3  
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Three Customers [Member]      
Concentration Risk, Percentage   32.00%  
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member] | Theranostics Products [Member]      
Concentration Risk, Percentage   18.00%