XML 51 R40.htm IDEA: XBRL DOCUMENT v3.25.2
Note 2 - Fair Value Measurements - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Cash and cash equivalents $ 2,374 $ 10,266
Fair Value, Recurring [Member]    
Unrealized Gain (Loss), before Tax 0 5
Total financial assets, adjusted cost 17,921 17,830
Assets, Fair Value Disclosure 17,921 17,835
Total financial liabilities 2,785 26
Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member]    
Assets, Fair Value Disclosure 1,085 5,823
Fair Value, Recurring [Member] | Debt Securities Available for Sale [Member]    
Assets, Fair Value Disclosure 16,836 12,012
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member]    
Cash and cash equivalents 1,085 5,823
Money market funds, fair value 1,085 5,823
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member] | Cash and Cash Equivalents [Member]    
Money market funds, fair value 1,085 5,823
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Private Placement Warrants [Member]    
Warrants and Rights Outstanding 0 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Asset-Backed Securities [Member]    
Debt Securities, Available-for-Sale, Amortized Cost 904  
Unrealized Gain (Loss), before Tax 0  
Debt Securities, Available-for-Sale 904  
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Asset-Backed Securities [Member] | Debt Securities Available for Sale [Member]    
Debt Securities, Available-for-Sale 904  
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Bond Securities [Member]    
Debt Securities, Available-for-Sale, Amortized Cost 10,049 9,660
Unrealized Gain (Loss), before Tax 0 4
Debt Securities, Available-for-Sale 10,049 9,664
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Bond Securities [Member] | Debt Securities Available for Sale [Member]    
Debt Securities, Available-for-Sale 10,049 9,664
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Commercial Paper [Member]    
Debt Securities, Available-for-Sale, Amortized Cost 3,396 945
Unrealized Gain (Loss), before Tax 0 0
Debt Securities, Available-for-Sale 3,396 945
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Commercial Paper [Member] | Debt Securities Available for Sale [Member]    
Debt Securities, Available-for-Sale 3,396 945
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member]    
Debt Securities, Available-for-Sale, Amortized Cost 2,487 1,402
Unrealized Gain (Loss), before Tax 0 1
Debt Securities, Available-for-Sale 2,487 1,403
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member] | Debt Securities Available for Sale [Member]    
Debt Securities, Available-for-Sale 2,487 1,403
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Derivative Financial Instruments, Liabilities [Member]    
Derivative warrant liabilities 788 $ 26
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Convertible Note, Current [Member]    
Convertible Debt, Fair Value Disclosures $ 1,997