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Note 3 - Investment Securities | 3 Months Ended
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Mar. 31, 2026
Notes to Financial Statements |
Investment in Debt and Equity Securities and Other Trading Assets [Text Block] | NOTE 3 - INVESTMENT SECURITIES The Company’s investment securities as of March 31, 2026 and December 31, 2025 primarily consist of government debt securities that are classified as held-to-maturity. Held-to-maturity securities are recorded at amortized cost. The following tables summarize the Company’s held-to-maturity securities at March 31, 2026 and December 31, 2025:
|  | March 31, 2026 |
|  | Amortized |  |  | Gross |  |  | Gross |  |  |  |
|  | cost, as |  |  | unrealized |  |  | unrealized |  |  | Estimated |
(in thousands) |  | adjusted |  |  | holding gains |  |  | holding losses |  |  | fair value |
Short-term obligations of domestic governmental agencies (maturing between April 2026 and March 2027) (held-to-maturity) |  | $ | 72,221 |  |  | $ | 63 |  |  | $ | (11 | ) |  | $ | 72,273 |
Long-term obligations of domestic governmental agencies (maturing between April 2027 and March 2028) (held-to-maturity) |  |  | 58,405 |  |  |  | 32 |  |  |  | (131 | ) |  |  | 58,306 |
Total held-to-maturity investment securities |  | $ | 130,626 |  |  | $ | 95 |  |  | $ | (142 | ) |  | $ | 130,579 |
|  | December 31, 2025 |
|  | Amortized |  |  | Gross |  |  | Gross |  |  |  |
|  | cost, as |  |  | unrealized |  |  | unrealized |  |  | Estimated |
(in thousands) |  | adjusted |  |  | holding gains |  |  | holding losses |  |  | fair value |
Short-term obligations of domestic governmental agencies (maturing between January 2026 and December 2026) (held-to-maturity) |  | $ | 62,822 |  |  | $ | 130 |  |  | $ | — |  |  | $ | 62,952 |
Long-term obligations of domestic governmental agencies (maturing between January 2027 and November 2027) (held-to-maturity) |  |  | 57,541 |  |  |  | 201 |  |  |  | — |  |  |  | 57,742 |
Total held-to-maturity investment securities |  | $ | 120,363 |  |  | $ | 331 |  |  | $ | — |  |  | $ | 120,694 |
Included in long-term investments on the condensed consolidated balance sheet, are equity securities held in connection with the Precision License Agreement. See Note 5 – Fair Value Measurements for a description of the Precision License Agreement and for further information on the Company’s equity investments.

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- Definition The entire disclosure for investment in debt and equity securities and other assets at fair value and held for trading. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/942-320/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/940-320/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph b -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-10 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B + Details
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