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Note 4 - Investments | 12 Months Ended
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Dec. 31, 2024
Notes to Financial Statements |
Investment Holdings [Text Block] | Note 4. Investments The following table shows the Company’s investments as of December 31, 2024 and 2023:
|  | December 31, 2024 |  |  | December 31, 2023 |
|  | Cost |  |  | Fair Value |  |  | Cost |  |  | Fair Value |
|  | (In thousands) |
Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  | $ | 678,167 |  |  | $ | 638,779 |  |  | $ | 721,231 |  |  | $ | 670,172 |
Warrants |  |  | 15,956 |  |  |  | 18,277 |  |  |  | 16,526 |  |  |  | 24,594 |
Other |  |  | 36,709 |  |  |  | 14,637 |  |  |  | 6,982 |  |  |  | 6,430 |
Equity |  |  | 35,942 |  |  |  | 26,198 |  |  |  | 14,443 |  |  |  | 7,889 |
Total investments |  | $ | 766,774 |  |  | $ | 697,891 |  |  | $ | 759,182 |  |  | $ | 709,085 |
The following table shows the Company’s investments by industry sector as of December 31, 2024 and 2023:
|  | December 31, 2024 |  |  | December 31, 2023 |
|  | Cost |  |  | Fair Value |  |  | Cost |  |  | Fair Value |
|  | (In thousands) |
Life Science |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Biotechnology |  | $ | 118,221 |  |  | $ | 97,562 |  |  | $ | 145,544 |  |  | $ | 117,781 |
Medical Device |  |  | 213,564 |  |  |  | 205,634 |  |  |  | 147,064 |  |  |  | 145,019 |
Technology |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Communications |  |  | 11,711 |  |  |  | 14,763 |  |  |  | 19,192 |  |  |  | 22,188 |
Consumer-Related |  |  | 74,421 |  |  |  | 36,667 |  |  |  | 105,669 |  |  |  | 101,327 |
Data Storage |  |  | 417 |  |  |  | 350 |  |  |  | 417 |  |  |  | 418 |
Internet and Media |  |  | 329 |  |  |  | 999 |  |  |  | 329 |  |  |  | 1,582 |
Networking |  |  | 10,070 |  |  |  | 9,827 |  |  |  | 5,451 |  |  |  | 5,297 |
Power Management |  |  | — |  |  |  | — |  |  |  | 1,585 |  |  |  | 2,700 |
Semiconductors |  |  | 45 |  |  |  | — |  |  |  | 45 |  |  |  | — |
Software |  |  | 154,040 |  |  |  | 151,043 |  |  |  | 164,133 |  |  |  | 160,749 |
Sustainability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Energy Efficiency |  |  | 9,818 |  |  |  | 9,712 |  |  |  | 111 |  |  |  | 13 |
Other Sustainability |  |  | 66,151 |  |  |  | 66,079 |  |  |  | 98,906 |  |  |  | 80,370 |
Healthcare Information and Services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diagnostics |  |  | 16,704 |  |  |  | 13,701 |  |  |  | 19,735 |  |  |  | 19,701 |
Other |  |  | 39,533 |  |  |  | 40,144 |  |  |  | 102 |  |  |  | 1,366 |
Software |  |  | 51,750 |  |  |  | 51,410 |  |  |  | 50,899 |  |  |  | 50,574 |
Total investments |  | $ | 766,774 |  |  | $ | 697,891 |  |  | $ | 759,182 |  |  | $ | 709,085 |

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- Definition The entire disclosure for investment holdings. This includes the long positions of investments for the entity. It contains investments in affiliated and unaffiliated issuers. The investments include securities and non securities (i.e. commodities and futures contracts). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-12 + Details
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