Consolidated Schedule of Investments (Unaudited) - Investments (Details) (Parentheticals)	Jun. 30, 2024	Dec. 31, 2023
NAV %	196.70%	218.90%
Investment, Affiliated Issuer, Controlled [Member]
NAV %		4.40%
Investment, Affiliated Issuer, Controlled [Member] \| Debt Investments [Member]
NAV %	3.50%
Investment, Affiliated Issuer, Noncontrolled [Member]
NAV %		0.30%
Investment, Unaffiliated Issuer [Member]
NAV %	188.40%	214.20%
Investment, Unaffiliated Issuer [Member] \| Technology Sector [Member]
NAV %	66.60%
Unrestricted Short Term Investments [Member]
NAV %	9.80%	1.00%
Restricted Short Term Investments [Member]
NAV %	1.00%	0.80%
Debt Securities [Member] \| Investment, Affiliated Issuer, Controlled [Member] \| Consumer-related Technologies [Member]
NAV %	1.70%	1.60%
Debt Securities [Member] \| Investment, Affiliated Issuer, Noncontrolled [Member]
NAV %	4.80%
Debt Securities [Member] \| Investment, Affiliated Issuer, Noncontrolled [Member] \| Life Science [Member]
NAV %	4.80%	0.30%
Debt Securities [Member] \| Investment, Unaffiliated Issuer [Member]
NAV %	178.80%	205.00%
Debt Securities [Member] \| Investment, Unaffiliated Issuer [Member] \| Life Science [Member]
NAV %		75.60%
Debt Securities [Member] \| Investment, Unaffiliated Issuer [Member] \| Technology Sector [Member]
NAV %		83.30%
Debt Securities [Member] \| Investment, Unaffiliated Issuer [Member] \| Healthcare Information and Services Segment [Member]
NAV %	19.70%	21.50%
Debt Securities [Member] \| Investment, Unaffiliated Issuer [Member] \| Sustainability Segment [Member]
NAV %	21.00%	24.60%
Equity Securities [Member] \| Investment, Affiliated Issuer, Controlled [Member] \| Technology Sector [Member]
NAV %	0.00%	0.90%
Equity Securities [Member] \| Investment, Affiliated Issuer, Noncontrolled [Member] \| Life Science [Member]
NAV %	0.00%	0.00%
Equity Securities [Member] \| Investment, Unaffiliated Issuer [Member]
NAV %	2.10%	1.50%
Warrant [Member] \| Investment, Affiliated Issuer, Noncontrolled [Member] \| Life Science [Member]
NAV %	0.00%	0.00%
Warrant [Member] \| Investment, Unaffiliated Issuer [Member]
NAV %	6.50%	7.60%
Warrant [Member] \| Investment, Unaffiliated Issuer [Member] \| Technology Sector [Member]
NAV %	4.00%	4.50%
Warrant [Member] \| Investment, Unaffiliated Issuer [Member] \| Healthcare Information and Services Segment [Member]
NAV %	0.40%	0.60%
Warrant [Member] \| Investment, Unaffiliated Issuer [Member] \| Life Science Segment [Member]
NAV %	1.90%	2.30%
Warrant [Member] \| Investment, Unaffiliated Issuer [Member] \| Sustainability Segment [Member]
NAV %	0.20%	0.20%
Other Investments [Member] \| Investment, Affiliated Issuer, Controlled [Member] \| Life Science [Member]
NAV %	1.80%	1.90%
Other Investments [Member] \| Investment, Unaffiliated Issuer [Member] \| Life Science [Member]
NAV %	1.00%	0.10%
Debt Investments [Member] \| Investment, Unaffiliated Issuer [Member] \| Life Science [Member]
NAV %	71.50%