v3.26.1
Note 4 - Balance Sheet Components - Cash and Cash Equivalents and Investments (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Cash and cash equivalents $ 50,746 $ 53,814 $ 25,229
Gross unrealized gains 0 1 8
Gross unrealized losses (7) (4) (4)
Short-term investments 10,276 9,993 26,494
Investments and Cash 61,029 63,810 51,719
Investments and Cash, Fair Value Disclosure 61,022 63,807 51,723
US Treasury Securities [Member]      
Cash and cash equivalents 2,788 4,067 0
Amortized Cost 4,190 14,063 23,802
Gross unrealized gains 0 1 7
Gross unrealized losses (2) (4) (4)
Estimated Fair Value 4,188 14,060 23,805
Short-term investments 1,400 9,993 23,805
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]      
Cash and cash equivalents     0
Amortized Cost     2,688
Gross unrealized gains     1
Gross unrealized losses     0
Estimated Fair Value     2,689
Short-term investments     2,689
Cash [Member]      
Cash and Cash Equivalents, at Carrying Value 3,837 3,583 8,740
Money market funds, Fair Value 3,837 3,583 8,740
Cash and cash equivalents 3,837 3,583 8,740
Money Market Funds [Member]      
Cash and Cash Equivalents, at Carrying Value 44,121 46,164 16,489
Money market funds, Fair Value 44,121 46,164 16,489
Cash and cash equivalents $ 44,121 $ 46,164 $ 16,489