Investment Portfolio - Schedule of Composition by Industry Sector (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Schedule of Investments [Line Items]
Fair Value	$ 1,312,733	$ 1,305,046
Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	100.00%	100.00%
Systems Software
Schedule of Investments [Line Items]
Fair Value	$ 165,645	$ 152,163
Systems Software | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	12.50%	11.60%
Construction & Engineering
Schedule of Investments [Line Items]
Fair Value	$ 119,499	$ 114,715
Construction & Engineering | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	9.10%	8.80%
Diversified Support Services
Schedule of Investments [Line Items]
Fair Value	$ 116,842	$ 132,155
Diversified Support Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	8.90%	10.10%
Application Software
Schedule of Investments [Line Items]
Fair Value	$ 111,320	$ 112,126
Application Software | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	8.50%	8.60%
Insurance Brokers
Schedule of Investments [Line Items]
Fair Value	$ 84,358	$ 73,174
Insurance Brokers | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	6.40%	5.60%
Environmental & Facilities Services
Schedule of Investments [Line Items]
Fair Value	$ 69,796	$ 67,565
Environmental & Facilities Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	5.30%	5.20%
Health Care Services
Schedule of Investments [Line Items]
Fair Value	$ 65,254	$ 65,059
Health Care Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	5.00%	5.00%
Asset Management & Custody Banks
Schedule of Investments [Line Items]
Fair Value	$ 49,275	$ 49,242
Asset Management & Custody Banks | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	3.80%	3.80%
Air Freight & Logistics
Schedule of Investments [Line Items]
Fair Value	$ 48,380	$ 48,106
Air Freight & Logistics | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	3.70%	3.70%
Specialized Consumer Services
Schedule of Investments [Line Items]
Fair Value	$ 46,382	$ 45,702
Specialized Consumer Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	3.50%	3.50%
Aerospace & Defense
Schedule of Investments [Line Items]
Fair Value	$ 38,023	$ 37,649
Aerospace & Defense | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	2.90%	2.90%
Electrical Components & Equipment
Schedule of Investments [Line Items]
Fair Value	$ 34,868	$ 35,545
Electrical Components & Equipment | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	2.70%	2.70%
Health Care Technology
Schedule of Investments [Line Items]
Fair Value	$ 35,481	$ 35,850
Health Care Technology | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	2.70%	2.70%
Trading Companies & Distributors
Schedule of Investments [Line Items]
Fair Value	$ 34,168	$ 21,726
Trading Companies & Distributors | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	2.60%	1.70%
Health Care Supplies
Schedule of Investments [Line Items]
Fair Value	$ 31,777	$ 32,358
Health Care Supplies | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	2.40%	2.50%
Consumer Finance
Schedule of Investments [Line Items]
Fair Value	$ 31,373	$ 28,755
Consumer Finance | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	2.40%	2.20%
Property & Casualty Insurance
Schedule of Investments [Line Items]
Fair Value	$ 29,161	$ 29,809
Property & Casualty Insurance | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	2.20%	2.30%
Interactive Media & Services
Schedule of Investments [Line Items]
Fair Value	$ 22,801	$ 22,923
Interactive Media & Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	1.70%	1.80%
Research & Consulting Services
Schedule of Investments [Line Items]
Fair Value	$ 22,271	$ 22,586
Research & Consulting Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	1.70%	1.70%
Specialty Chemicals
Schedule of Investments [Line Items]
Fair Value	$ 20,439	$ 20,580
Specialty Chemicals | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	1.60%	1.60%
Leisure Facilities
Schedule of Investments [Line Items]
Fair Value	$ 19,052	$ 19,251
Leisure Facilities | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	1.50%	1.50%
Education Services
Schedule of Investments [Line Items]
Fair Value	$ 17,241	$ 16,666
Education Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	1.30%	1.30%
Cargo Ground Transportation
Schedule of Investments [Line Items]
Fair Value	$ 14,690	$ 15,015
Cargo Ground Transportation | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	1.10%	1.20%
Human Resource & Employment Services
Schedule of Investments [Line Items]
Fair Value	$ 13,761	$ 13,824
Human Resource & Employment Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	1.00%	1.10%
Commercial & Residential Mortgage Finance
Schedule of Investments [Line Items]
Fair Value	$ 12,295	$ 12,294
Commercial & Residential Mortgage Finance | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.90%	0.90%
Health Care Equipment
Schedule of Investments [Line Items]
Fair Value	$ 10,800	$ 10,663
Health Care Equipment | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.80%	0.80%
Internet Services & Infrastructure
Schedule of Investments [Line Items]
Fair Value	$ 7,487	$ 7,685
Internet Services & Infrastructure | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.60%	0.60%
Personal Care Products
Schedule of Investments [Line Items]
Fair Value	$ 7,766	$ 7,886
Personal Care Products | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.60%	0.60%
Health Care Facilities
Schedule of Investments [Line Items]
Fair Value	$ 4,890	$ 5,010
Health Care Facilities | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.40%	0.40%
Food Distributors
Schedule of Investments [Line Items]
Fair Value	$ 4,649	$ 4,520
Food Distributors | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.40%	0.30%
Highways & Railtracks
Schedule of Investments [Line Items]
Fair Value	$ 5,619	$ 5,696
Highways & Railtracks | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.40%	0.40%
Diversified Financial Services
Schedule of Investments [Line Items]
Fair Value	$ 5,394	$ 5,570
Diversified Financial Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.40%	0.40%
Hotels, Resorts & Cruise Lines
Schedule of Investments [Line Items]
Fair Value	$ 4,613	$ 4,462
Hotels, Resorts & Cruise Lines | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.40%	0.30%
Construction Machinery & Heavy Transportation Equipment
Schedule of Investments [Line Items]
Fair Value	$ 4,181	$ 4,192
Construction Machinery & Heavy Transportation Equipment | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.30%	0.30%
IT Consulting & Other Services
Schedule of Investments [Line Items]
Fair Value	$ 2,294	$ 2,610
IT Consulting & Other Services | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.20%	0.20%
Electronic Equipment & Instruments
Schedule of Investments [Line Items]
Fair Value	$ 888	$ 970
Electronic Equipment & Instruments | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.10%	0.10%
Publishing
Schedule of Investments [Line Items]
Fair Value	$ 0	$ 20,944
Publishing | Investment Owned, At Fair Value | Industry Concentration Risk
Schedule of Investments [Line Items]
Percentage of Portfolio	0.00%	1.60%