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Note 6 - Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

Level 3

 

March 31, 2026

 

 

December 31, 2025

 

Notes Warrants

 

$ 37

 

 

$ 41

 

Additional Warrants

 

 

4

 

 

 

4

 

Total

 

$ 41

 

 

$ 45

 

Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

 

 

Notes

 

 

Additional

 

 

 

 

 

 

Warrants

 

 

Warrants

 

 

Total

 

Measurement at December 31, 2025

 

$

41

 

 

$

4

 

 

$

45

 

Change in fair value

 

$

(4

)

 

$

 

 

$

(4

)

Measurement at March 31, 2026

 

$

37

 

 

$

4

 

 

$

41

 

 

 

Notes

 

 

Additional

 

 

 

 

 

 

Warrants

 

 

Warrants

 

 

Total

 

Measurement at December 31, 2024

 

$

197

 

 

$

27

 

 

$

224

 

Change in fair value

 

$

(107

)

 

$

(16

)

 

$

(123

)

Measurement at March 31, 2025

 

$

90

 

 

$

11

 

 

$

101