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v3.26.1

Note 2 - Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2026
Notes Tables |
Debt Securities, Held-to-Maturity [Table Text Block] |
|  | As of |
Held-to-maturity debt securities: |  | June 30, 2026 |  |  | December 31, 2025 |
Amortized cost |  | $ | 21,965 |  |  | $ | 19,933 |
Gross unrecognized gains |  |  | 4 |  |  |  | 76 |
Gross unrecognized losses |  |  | (40 | ) |  |  | — |
Fair value |  | $ | 21,929 |  |  | $ | 20,009 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized Cost |  |  | Fair Value |
Within one year |  | $ | 11,991 |  |  | $ | 11,979 |
After one year through two years |  |  | 9,974 |  |  |  | 9,950 |
Total |  | $ | 21,965 |  |  | $ | 21,929 |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
At January 1, 2025 |  | $ | 106 |
Provision charged to expense |  |  | — |
(Write-offs) / Recoveries |  |  | 2 |
At December 31, 2025 |  | $ | 108 |
Provision charged to expense |  |  | — |
(Write-offs) / Recoveries |  |  | (1 | )
At June 30, 2026 |  | $ | 107 |

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