v3.26.1
Summary of Significant Accounting Policies - Summary of Cost, Fair Value and Types of Income Not Recorded in "Interest Income" Related to Senior Secured Term Loans on Non-accrual Status (Details) - Senior Secured Term Loan - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Summary Of Significant Accounting Policies [Line Items]    
Forgone Income $ 4,207 $ 1,306
Cost Basis 53,713 4,757
Fair Value $ 45,034 $ 2,361
Fair Value as a % of Total Portfolio 3.78% 0.25%
Location, Statement of Income, Balance [Axis]: rway:ForgoneInterestIncome    
Summary Of Significant Accounting Policies [Line Items]    
Forgone Income $ 4,163 $ 1,306
Location, Statement of Income, Balance [Axis]: rway:OriginalIssueDiscountAccretionInterestIncomeAndEndOfTermPayment    
Summary Of Significant Accounting Policies [Line Items]    
Forgone Income $ 44  
Mingle Healthcare Solutions Inc    
Summary Of Significant Accounting Policies [Line Items]    
Date of Non-Accrual Jan. 01, 2024 Jan. 01, 2024
Forgone Income $ 1,603 $ 1,306
Cost Basis 4,757 4,757
Fair Value $ 1,897 $ 2,361
Fair Value as a % of Total Portfolio 0.16% 0.25%
Mingle Healthcare Solutions Inc | Location, Statement of Income, Balance [Axis]: rway:ForgoneInterestIncome    
Summary Of Significant Accounting Policies [Line Items]    
Forgone Income $ 1,603 $ 1,306
Marley Spoon SE    
Summary Of Significant Accounting Policies [Line Items]    
Date of Non-Accrual Mar. 31, 2026  
Forgone Income $ 2,604  
Cost Basis 48,956  
Fair Value $ 43,137  
Fair Value as a % of Total Portfolio 3.62%  
Marley Spoon SE | Location, Statement of Income, Balance [Axis]: rway:ForgoneInterestIncome    
Summary Of Significant Accounting Policies [Line Items]    
Forgone Income $ 2,560  
Marley Spoon SE | Location, Statement of Income, Balance [Axis]: rway:OriginalIssueDiscountAccretionInterestIncomeAndEndOfTermPayment    
Summary Of Significant Accounting Policies [Line Items]    
Forgone Income $ 44