Fair Value Measurements - Summary of Company's Assets Categorized within the Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	$ 1,008,284	$ 679,064
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	27,590	12,923
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	980,694	666,141
First Lien Secured [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents		665,741
First Lien Secured [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents		665,741
First Lien Senior Secured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	959,980
First Lien Senior Secured Debt [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	959,980
First Lien Last Out Unitranche Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	20,342
First Lien Last Out Unitranche Debt [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	20,342
Common Equity [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	372	400
Common Equity [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	372	400
Cash and Cash Equivalents [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	27,590	12,923
Cash and Cash Equivalents [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Portfolio Investments, Cash and Cash Equivalents	$ 27,590	$ 12,923