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Investments - Summary of Company's Portfolio Investment by Industry at Cost and Fair Value and as Percentage of Total Portfolio (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 1,760,226 | $ 1,319,316
Cost, Percentage |  | 100.00% | 100.00%
Fair Value |  | $ 1,725,570 | $ 1,275,180
Fair Value, Percentage |  | 100.00% | 100.00%
Finance and Insurance |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 319,278 | $ 139,399
Cost, Percentage |  | 18.10% | 10.60%
Fair Value |  | $ 322,735 | $ 133,344
Fair Value, Percentage |  | 18.70% | 10.50%
Medical Devices |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 170,923 | $ 68,717
Cost, Percentage |  | 9.70% | 5.20%
Fair Value |  | $ 172,395 | $ 70,320
Fair Value, Percentage |  | 10.00% | 5.50%
Green Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 146,851 | $ 138,510
Cost, Percentage |  | 8.30% | 10.50%
Fair Value |  | $ 158,852 | $ 143,279
Fair Value, Percentage |  | 9.20% | 11.20%
SaaS |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 144,896 | $ 34,257
Cost, Percentage |  | 8.20% | 2.60%
Fair Value |  | $ 146,778 | $ 34,440
Fair Value, Percentage |  | 8.50% | 2.70%
Other Healthcare Services |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 142,430 |
Cost, Percentage |  | 8.10% |
Fair Value |  | $ 143,186 |
Fair Value, Percentage |  | 8.30% |
Space Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 141,163 | $ 185,384
Cost, Percentage |  | 8.00% | 14.10%
Fair Value |  | $ 142,034 | $ 186,335
Fair Value, Percentage |  | 8.20% | 14.60%
Real Estate Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 101,825 | $ 94,878
Cost, Percentage |  | 5.80% | 7.20%
Fair Value |  | $ 93,587 | $ 91,344
Fair Value, Percentage |  | 5.40% | 7.20%
Artificial Intelligence & Automation |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 83,505 | $ 34,732
Cost, Percentage |  | 4.70% | 2.60%
Fair Value |  | $ 84,448 | $ 34,435
Fair Value, Percentage |  | 4.90% | 2.70%
Healthcare Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 78,381 | $ 89,038
Cost, Percentage |  | 4.50% | 6.80%
Fair Value |  | $ 71,853 | $ 84,917
Fair Value, Percentage |  | 4.20% | 6.60%
Biotechnology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 56,547 | $ 56,173
Cost, Percentage |  | 3.20% | 4.30%
Fair Value |  | $ 57,836 | $ 55,810
Fair Value, Percentage |  | 3.40% | 4.40%
Consumer Products & Services |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 56,210 | $ 85,683
Cost, Percentage |  | 3.20% | 6.50%
Fair Value |  | $ 54,607 | $ 83,722
Fair Value, Percentage |  | 3.20% | 6.60%
Transportation Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 62,735 | $ 45,024
Cost, Percentage |  | 3.60% | 3.40%
Fair Value |  | $ 41,547 | $ 39,532
Fair Value, Percentage |  | 2.40% | 3.10%
Marketing, Media, and Entertainment |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 38,749 | $ 49,145
Cost, Percentage |  | 2.20% | 3.70%
Fair Value |  | $ 38,479 | $ 47,526
Fair Value, Percentage |  | 2.20% | 3.70%
Connectivity |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 36,099 | $ 36,191
Cost, Percentage |  | 2.10% | 2.70%
Fair Value |  | $ 35,249 | $ 34,219
Fair Value, Percentage |  | 2.00% | 2.70%
Multi-Sector Holdings |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost | [1],[2] | $ 27,623 | $ 11,006
Cost, Percentage | [1],[2] | 1.60% | 0.80%
Fair Value | [1],[2] | $ 33,137 | $ 11,335
Fair Value, Percentage | [1],[2] | 1.90% | 0.90%
Education Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 33,275 | $ 18,975
Cost, Percentage |  | 1.90% | 1.40%
Fair Value |  | $ 29,740 | $ 15,285
Fair Value, Percentage |  | 1.70% | 1.20%
Human Resource Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 33,421 | $ 31,142
Cost, Percentage |  | 1.90% | 2.40%
Fair Value |  | $ 28,891 | $ 30,595
Fair Value, Percentage |  | 1.70% | 2.40%
Supply Chain Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 29,765 | $ 30,414
Cost, Percentage |  | 1.70% | 2.30%
Fair Value |  | $ 28,535 | $ 24,556
Fair Value, Percentage |  | 1.70% | 1.90%
Food and Agriculture Technologies |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 31,824 | $ 90,967
Cost, Percentage |  | 1.80% | 6.90%
Fair Value |  | $ 24,469 | $ 88,707
Fair Value, Percentage |  | 1.40% | 7.00%
Industrials |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 11,772 | $ 21,995
Cost, Percentage |  | 0.70% | 1.70%
Fair Value |  | $ 9,677 | $ 23,113
Fair Value, Percentage |  | 0.60% | 1.80%
Construction Technology |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 9,443 | $ 24,141
Cost, Percentage |  | 0.50% | 1.80%
Fair Value |  | $ 4,042 | $ 6,813
Fair Value, Percentage |  | 0.20% | 0.50%
Digital Assets Technology and Services |  |  |
Schedule Of Investments [Line Items] |  |  |
Cost |  | $ 3,511 | $ 33,545
Cost, Percentage |  | 0.20% | 2.50%
Fair Value |  | $ 3,493 | $ 35,553
Fair Value, Percentage |  | 0.20% | 2.80%
[1] | Multi-Sector Holdings consist of the Company's investments in Senior Credit Corp 2022 LLC, Trinity Capital Adviser LLC and EPT 16 LLC. These entities invest or manage investments in secured loans and equipment financings to growth-oriented companies that have been originated by the Company. The portfolio companies held by the Multi-Sector Holdings represent a diverse set of geographical classifications, which are similar to those in which the Company invests directly. See “Note 12 – Related Party Transactions” in the notes to the consolidated financial statements for further discussion.
[2] | Multi-Sector Holdings consist of the Company's investments in Senior Credit Corp 2022 LLC, Trinity Capital Adviser LLC and EPT 16 LLC. These entities invest or manage investments in secured loans and equipment financings to growth-oriented companies that have been originated by the Company. The portfolio companies held by the Multi-Sector Holdings represent a diverse set of industry classifications, which are similar to those in which the Company invests directly. See “Note 12 – Related Party Transactions” in the notes to the consolidated financial statements for further discussion.

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