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v3.25.1

Consolidated Schedule of Investments (Unaudited) - Investments (Details) (Parentheticals) | Mar. 31, 2025 | Dec. 31, 2024
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NAV % | 225.70% | 207.60%
Investment, Affiliated Issuer, Controlled [Member] |  |
NAV % | 4.80% | 9.50%
Investment, Unaffiliated Issuer [Member] |  |
NAV % | 218.20% | 195.60%
Unrestricted Short Term Investments [Member] |  |
NAV % | 13.40% | 8.10%
Restricted Short Term Investments [Member] |  |
NAV % | 1.10% | 1.00%
Equity Securities [Member] | Investment, Affiliated Issuer, Noncontrolled [Member] |  |
NAV % | 0.00% | 0.00%
Equity Securities [Member] | Investment, Affiliated Issuer, Controlled [Member] |  |
NAV % | 2.60% | 5.30%
Equity Securities [Member] | Investment, Unaffiliated Issuer [Member] |  |
NAV % | 1.90% | 2.50%
Other Investments [Member] | Investment, Affiliated Issuer, Noncontrolled [Member] |  |
NAV % | 2.70% | 2.50%
Other Investments [Member] | Investment, Affiliated Issuer, Controlled [Member] |  |
NAV % | 1.70% | 1.90%
Other Investments [Member] | Investment, Unaffiliated Issuer [Member] | Life Science Segment [Member] |  |
NAV % | 0.00% | 0.00%
Warrant [Member] | Investment, Affiliated Issuer, Noncontrolled [Member] |  |
NAV % | 0.00% | 0.00%
Warrant [Member] | Investment, Unaffiliated Issuer [Member] |  |
NAV % | 6.10% | 5.40%
Warrant [Member] | Investment, Unaffiliated Issuer [Member] | Sustainability Segment [Member] |  |
NAV % | 0.10% | 0.10%
Warrant [Member] | Investment, Unaffiliated Issuer [Member] | Life Science Segment [Member] |  |
NAV % | 2.00% | 1.90%
Warrant [Member] | Investment, Unaffiliated Issuer [Member] | Technology Sector [Member] |  |
NAV % | 3.50% | 3.10%
Warrant [Member] | Investment, Unaffiliated Issuer [Member] | Healthcare Information and Services Segment [Member] |  |
NAV % | 0.50% | 0.30%
Debt Securities [Member] | Investment, Affiliated Issuer, Controlled [Member] |  |
NAV % | 0.50% | 2.30%
Debt Securities [Member] | Investment, Unaffiliated Issuer [Member] |  |
NAV % | 210.20% | 187.70%
Debt Securities [Member] | Investment, Unaffiliated Issuer [Member] | Sustainability Segment [Member] |  |
NAV % | 21.30% | 19.90%
Debt Securities [Member] | Investment, Unaffiliated Issuer [Member] | Life Science Segment [Member] |  |
NAV % | 93.10% |
Debt Securities [Member] | Investment, Unaffiliated Issuer [Member] | Technology Sector [Member] |  |
NAV % | 61.50% | 59.00%
Debt Securities [Member] | Investment, Unaffiliated Issuer [Member] | Software, Healthcare Information and Service [Member] |  |
NAV % |  | 31.00%
Debt Securities [Member] | Investment, Unaffiliated Issuer [Member] | Healthcare Information and Services Segment [Member] |  |
NAV % | 34.30% |
Debt Securities [Member] | Investment, Unaffiliated Issuer [Member] | Life Science [Member] |  |
NAV % |  | 77.80%

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