v3.26.3
Note 12 - Fair Value - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Money Market Funds [Member]      
Cash equivalents – money market funds $ 6,855   $ 2,211
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]      
Cash equivalents – money market funds 6,855   2,211
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]      
Cash equivalents – money market funds 0   0
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]      
Cash equivalents – money market funds 0   0
Common Stock Warrant Liability [Member]      
Derivative liabilities 8,644   5,063
Balance 5,063 $ 4,541  
Initial fair value of instruments issued 5,882 0  
Change in fair value (2,301) (267)  
Balance 8,644 4,274  
Change in fair value pursuant to the 2024 SSCPN Amendment, recorded as a debt discount 2,301 267  
Common Stock Warrant Liability [Member] | Amended 2024 SSCP Notes [Member]      
Change in fair value   0  
Change in fair value pursuant to the 2024 SSCPN Amendment, recorded as a debt discount   0  
Common Stock Warrant Liability [Member] | Fair Value, Inputs, Level 1 [Member]      
Derivative liabilities 0   0
Common Stock Warrant Liability [Member] | Fair Value, Inputs, Level 2 [Member]      
Derivative liabilities 0   0
Common Stock Warrant Liability [Member] | Fair Value, Inputs, Level 3 [Member]      
Derivative liabilities 8,644   5,063
Derivatives Other Than Common Stock Warrants Liabilities [Member]      
Derivative liabilities 2,345   3,093
Balance 3,093 1,804  
Initial fair value of instruments issued 0 239  
Change in fair value (748) 89  
Balance 2,345 2,819  
Change in fair value pursuant to the 2024 SSCPN Amendment, recorded as a debt discount 748 (89)  
Derivatives Other Than Common Stock Warrants Liabilities [Member] | Amended 2024 SSCP Notes [Member]      
Change in fair value   (687)  
Change in fair value pursuant to the 2024 SSCPN Amendment, recorded as a debt discount   $ 687  
Derivatives Other Than Common Stock Warrants Liabilities [Member] | Fair Value, Inputs, Level 1 [Member]      
Derivative liabilities 0   0
Derivatives Other Than Common Stock Warrants Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]      
Derivative liabilities 0   0
Derivatives Other Than Common Stock Warrants Liabilities [Member] | Fair Value, Inputs, Level 3 [Member]      
Derivative liabilities $ 2,345   $ 3,093