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Related Party Transactions - Trinity Capital Adviser LLC - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Related Party Transaction [Line Items]
Outstanding payable	$ 49,761		$ 49,761		$ 51,742
Dividend distributions	1,600		7,500
Corporate Joint Venture
Related Party Transaction [Line Items]
Outstanding payable	200		200		5,900
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Related Party Transaction [Line Items]
Other receivables	700		700		1,600
Direct Lending 2025 LLC \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssets
Related Party Transaction [Line Items]
Other receivables	300		300		300
Trinity Capital Adviser LLC \| Adviser Sub
Related Party Transaction [Line Items]
Total net expenses	2,000	$ 1,000	4,000	$ 1,900
Receivables from related party	$ 6,800		$ 6,800		$ 4,500