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Note 11 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Jun. 28, 2024
Unrecognized Tax Benefits, Ending Balance $ 0  
Surtax Percent   2.50%
Taxable Net Income Threshold   $ 10,000
Standard Corporate Business Tax, Percent   9.00%
Surtax and Corporate Business Tax Combined Rate, Percent   11.50%
Domestic Tax Jurisdiction [Member]    
Open Tax Year 2021  
State and Local Jurisdiction [Member]    
Open Tax Year 2020 2021 2022 2023 2024  
State and Local Jurisdiction [Member] | New Jersey Division of Taxation [Member]    
Operating Loss Carryforwards $ 29,500  
State and Local Jurisdiction [Member] | New Jersey Division of Taxation [Member] | Tax Year 2043 [Member]    
Operating Loss Carryforwards, Subject to Expiration 15,200  
State and Local Jurisdiction [Member] | New Jersey Division of Taxation [Member] | Tax Year 2044 [Member]    
Operating Loss Carryforwards, Subject to Expiration $ 14,300