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Note 10 - Distributions (Details Textual) - $ / shares | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ 0.33 |
Investment Company, Investment Income (Loss), Per Share, Basic (in dollars per share) | 0.27 | $ 0.38
Earnings Per Share, Basic, Undistributed (in dollars per share) | $ 1 |

X
- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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X
- Definition The earnings attributable to each security on the basis that all of the earnings for the period had been distributed (to the extent that each security may share in earnings). This is the earnings amount which reflects the participation rights in undistributed earnings of each security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B + Details
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- Definition Per-basic-share or unit amount, after investment expense, of dividend and interest investment income (loss) from investment held by investment company. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 + Details
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