Quarterly report [Sections 13 or 15(d)]

Note 4 - Marketable Securities - Fair Value of Marketable Securities (Details)

v3.26.1
Note 4 - Marketable Securities - Fair Value of Marketable Securities (Details) - Fair Value, Recurring [Member] - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Total marketable securities $ 46,463 $ 44,243
Fair Value, Inputs, Level 1 [Member]    
Total marketable securities 0 0
Fair Value, Inputs, Level 2 [Member]    
Total marketable securities 46,463 44,243
Fair Value, Inputs, Level 3 [Member]    
Total marketable securities 0 0
US Government Agencies Debt Securities [Member]    
Total marketable securities 38,164 39,421
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Total marketable securities 0 0
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Total marketable securities 38,164 39,421
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Total marketable securities 0 0
Commercial Paper and Corporate Bonds [Member]    
Total marketable securities 8,299 4,822
Commercial Paper and Corporate Bonds [Member] | Fair Value, Inputs, Level 1 [Member]    
Total marketable securities 0 0
Commercial Paper and Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]    
Total marketable securities 8,299 4,822
Commercial Paper and Corporate Bonds [Member] | Fair Value, Inputs, Level 3 [Member]    
Total marketable securities $ 0 $ 0