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Note 3 - U.S. Treasury Securities, Available-for-sale | 12 Months Ended
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Dec. 31, 2025
Notes to Financial Statements |
Available-for-sale Debt Securities [Text Block] | NOTE 3. U.S. TREASURY SECURITIES, AVAILABLE-FOR-SALE The following table presents the amortized cost, gross unrealized holding gains and losses, and fair value of available-for-sale investments as of December 31, 2025 and 2024. U.S. Treasury securities are held primarily to satisfy collateral requirements of the Company's repurchase and derivative counterparties.
(in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
December 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury Note, 4.625%, 6/30/2026 Maturity |  | $ | 100,136 |  |  | $ | 395 |  |  | $ | - |  |  | $ | 100,531 |
U.S. Treasury Note, 0.75%, 5/31/2026 Maturity |  |  | 34,579 |  |  |  | 23 |  |  |  | - |  |  |  | 34,602 |
|  | $ | 134,715 |  |  | $ | 418 |  |  | $ | - |  |  | $ | 135,133 |
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury Note, 4.625%, 6/30/2026 Maturity |  | $ | 100,412 |  |  | $ | 139 |  |  | $ | - |  |  | $ | 100,551 |
|  | $ | 100,412 |  |  | $ | 139 |  |  | $ | - |  |  | $ | 100,551 |
Because all of the Company's available-for-sale securities are backed by the full faith and credit of the U.S. government, the Company has not recorded an allowance for credit losses.

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