Fair Value of Financial Instruments - Valuation Technique (Details) $ in Thousands	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Fair Value of Financial Instruments
Fair Value	$ 820,489	$ 800,100
Level 3
Fair Value of Financial Instruments
Fair Value	792,553	785,883
Excluded level 3 investments due to using unadjusted inputs that have not been internally developed
Fair Value of Financial Instruments
Fair Value	27,936	14,217
Debt investments \| Discounted Cash Flows \| Level 3
Fair Value of Financial Instruments
Fair Value	$ 719,963	$ 719,243
Debt investments \| Discounted Cash Flows \| Discount Rate \| Minimum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.0751	0.068
Debt investments \| Discounted Cash Flows \| Discount Rate \| Maximum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.2565	0.222
Debt investments \| Discounted Cash Flows \| Discount Rate \| Weighted Average \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.1129	0.1039
Debt investments \| Enterprise Value \| Level 3
Fair Value of Financial Instruments
Fair Value	$ 42,562	$ 39,605
Debt investments \| Enterprise Value \| Revenue Multiple \| Minimum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.001	0.0013
Debt investments \| Enterprise Value \| Revenue Multiple \| Maximum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.10	0.13
Debt investments \| Enterprise Value \| Revenue Multiple \| Weighted Average \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.0528	0.0452
Debt investments \| Broker Quoted \| Level 3
Fair Value of Financial Instruments
Fair Value	$ 14,948	$ 14,566
Equity investments \| Level 3
Fair Value of Financial Instruments
Fair Value	$ 14,679	$ 12,005
Equity investments \| Enterprise Value \| EBITDA Multiple \| Minimum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.035	0.02
Equity investments \| Enterprise Value \| EBITDA Multiple \| Maximum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.1275	0.13
Equity investments \| Enterprise Value \| EBITDA Multiple \| Weighted Average \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.0754	0.0738
Warrants
Fair Value of Financial Instruments
Fair Value	$ 401	$ 464
Warrants \| Level 3
Fair Value of Financial Instruments
Fair Value	$ 401	$ 464
Warrants \| Enterprise Value \| EBITDA Multiple \| Minimum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.001	0.0013
Warrants \| Enterprise Value \| EBITDA Multiple \| Maximum \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.1075	0.085
Warrants \| Enterprise Value \| EBITDA Multiple \| Weighted Average \| Level 3
Fair Value of Financial Instruments
Investments in Measurement Input	0.0775	0.0702