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Note 10 - Concentrations of Credit Risk | 12 Months Ended
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Dec. 31, 2023
Notes to Financial Statements |
Concentration Risk Disclosure [Text Block] | Note 10. Concentrations of credit risk The Company’s debt investments consist primarily of loans to development-stage companies at various stages of development in the technology, life science, healthcare information and services and sustainability industries. Many of these companies may have relatively limited operating histories and also may experience variation in operating results. Many of these companies conduct business in regulated industries and could be affected by changes in government regulations. Most of the Company’s borrowers will need additional capital to satisfy their continuing working capital needs and other requirements, and in many instances, to service the interest and principal payments on the loans. The Company’s largest debt investments may vary from year to year as new debt investments are recorded and existing debt investments are repaid. The Company’s five largest debt investments at cost represented 23% of total debt investments outstanding as of December 31, 2023 and 2022. The Company’s five largest debt investments at fair value represented 22% and 23% of total debt investments outstanding as of December 31, 2023 and 2022, respectively. No single debt investment represented more than 10% of the total debt investments at cost or fair value as of December 31, 2023 or 2022. Investment income, consisting of interest and fees, can fluctuate significantly upon repayment of large debt investments. Interest income from the five largest debt investments at cost accounted for 17%, 15% and 17% of total interest and fee income on investments for the years ended December 31, 2023, 2022 and 2021, respectively. Interest income from the five largest debt investments at fair value accounted for 15%, 15% and 17% of total interest and fee income on investments for the years ended December 31, 2023, 2022 and 2021, respectively.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 275 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//275/tableOfContent + Details
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