v3.25.4
Significant Agreements And Related Party Transactions - Schedule of Affiliated Investments Including Investments in Money Market Funds (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Non-Controlled Affiliates      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance $ 131,993 $ 42,419  
Gross Additions [1] 1,289,056 1,396,051  
Gross Reductions [2] (1,274,574) (1,302,515)  
Net Realized Gain(Loss) (33,824) (2,015) $ (0)
Net Change in Unrealized Appreciation (Depreciation) 13,117 (1,947) (2,532)
Ending Fair Value Balance 125,768 131,993 42,419
Dividend, Interest, PIK and Other Income 8,320 6,345  
Investment, Identifier [Axis]: Non-Controlled Affiliates ABC Investment Holdco Inc. dba ABC Plumbing      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 11,551 0  
Gross Additions [1]   11,883  
Gross Reductions [2]   (302)  
Net Realized Gain(Loss)   0  
Net Change in Unrealized Appreciation (Depreciation)   (30)  
Ending Fair Value Balance   11,551 0
Dividend, Interest, PIK and Other Income   713  
Investment, Identifier [Axis]: Non-Controlled Affiliates ATX Networks Corporation      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 0 6,437  
Gross Additions [1]   128  
Gross Reductions [2]   (3,168)  
Net Realized Gain(Loss)   (2,673)  
Net Change in Unrealized Appreciation (Depreciation)   (724)  
Ending Fair Value Balance   0 6,437
Dividend, Interest, PIK and Other Income   235  
Investment, Identifier [Axis]: Non-Controlled Affiliates Animal Supply Holdings, LLC      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 0 0  
Gross Additions [1] 0 0  
Gross Reductions [2] 0 0  
Net Realized Gain(Loss) (22,902) 0  
Net Change in Unrealized Appreciation (Depreciation) 22,902 0  
Ending Fair Value Balance 0 0 0
Dividend, Interest, PIK and Other Income 0 0  
Investment, Identifier [Axis]: Non-Controlled Affiliates Collaborative Imaging, LLC dba Texas Radiology Associates      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 0 4,122  
Gross Additions [1]   0  
Gross Reductions [2]   (4,088)  
Net Realized Gain(Loss)   658  
Net Change in Unrealized Appreciation (Depreciation)   (692)  
Ending Fair Value Balance   0 4,122
Dividend, Interest, PIK and Other Income   85  
Investment, Identifier [Axis]: Non-Controlled Affiliates Conergy Asia & ME Pte. LTD      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 0 0  
Gross Additions [1] 0 0  
Gross Reductions [2] 0 0  
Net Realized Gain(Loss) (6,355) 0  
Net Change in Unrealized Appreciation (Depreciation) 6,355 0  
Ending Fair Value Balance 0 0 0
Dividend, Interest, PIK and Other Income 0 0  
Investment, Identifier [Axis]: Non-Controlled Affiliates Elah Holdings Inc.      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 5,396 5,396  
Gross Additions [1] 0 0  
Gross Reductions [2] 0 0  
Net Realized Gain(Loss) 0 0  
Net Change in Unrealized Appreciation (Depreciation) (0) 0  
Ending Fair Value Balance 5,396 5,396 5,396
Dividend, Interest, PIK and Other Income 0 0  
Investment, Identifier [Axis]: Non-Controlled Affiliates Goldman Sachs Financial Square Government Fund      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 25,238 0  
Gross Additions [1] 1,280,435 1,318,734  
Gross Reductions [2] (1,269,949) (1,293,496)  
Net Realized Gain(Loss) 0 0  
Net Change in Unrealized Appreciation (Depreciation) 0 0  
Ending Fair Value Balance 35,724 25,238 0
Dividend, Interest, PIK and Other Income 785 1,380  
Investment, Identifier [Axis]: Non-Controlled Affiliates Iracore International Holdings, Inc.      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 7,015 9,101  
Gross Additions [1] 0 0  
Gross Reductions [2] (1,502) (859)  
Net Realized Gain(Loss) 0 0  
Net Change in Unrealized Appreciation (Depreciation) (2,785) (1,227)  
Ending Fair Value Balance 2,728 7,015 9,101
Dividend, Interest, PIK and Other Income 177 807  
Investment, Identifier [Axis]: Non-Controlled Affiliates Kawa Solar Holdings Limited      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 741 1,073  
Gross Additions [1] 0 0  
Gross Reductions [2] (614) 0  
Net Realized Gain(Loss) (4,567) 0  
Net Change in Unrealized Appreciation (Depreciation) 4,440 (332)  
Ending Fair Value Balance 0 741 1,073
Dividend, Interest, PIK and Other Income 0 0  
Investment, Identifier [Axis]: Non-Controlled Affiliates LCG Vardiman Black, LLC (dba Specialty Dental Brands)      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 814 0  
Gross Additions [1]   955  
Gross Reductions [2]   0  
Net Realized Gain(Loss)   0  
Net Change in Unrealized Appreciation (Depreciation)   (141)  
Ending Fair Value Balance   814 0
Dividend, Interest, PIK and Other Income   85  
Investment, Identifier [Axis]: Non-Controlled Affiliates MedeAnalytics Group Holdings, LLC      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 156    
Gross Additions [1] 0    
Gross Reductions [2] 0    
Net Realized Gain(Loss) 0    
Net Change in Unrealized Appreciation (Depreciation) 2    
Ending Fair Value Balance 158 156  
Dividend, Interest, PIK and Other Income 0    
Investment, Identifier [Axis]: Non-Controlled Affiliates MedeAnalytics, Inc.      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 156 146  
Gross Additions [1]   0  
Gross Reductions [2]   0  
Net Realized Gain(Loss)   0  
Net Change in Unrealized Appreciation (Depreciation)   10  
Ending Fair Value Balance   156 146
Dividend, Interest, PIK and Other Income   0  
Investment, Identifier [Axis]: Non-Controlled Affiliates Pluralsight, Inc.      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 42,214 0  
Gross Additions [1] 1,812 41,716  
Gross Reductions [2] (73) 0  
Net Realized Gain(Loss) 0 0  
Net Change in Unrealized Appreciation (Depreciation) (16,459) 498  
Ending Fair Value Balance 27,494 42,214 0
Dividend, Interest, PIK and Other Income 2,932 524  
Investment, Identifier [Axis]: Non-Controlled Affiliates RPC ABC Investment Holdco LLC dba ABC Plumbing      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 11,551    
Gross Additions [1] 1,595    
Gross Reductions [2] (543)    
Net Realized Gain(Loss) 0    
Net Change in Unrealized Appreciation (Depreciation) (1,029)    
Ending Fair Value Balance 11,574 11,551  
Dividend, Interest, PIK and Other Income 1,135    
Investment, Identifier [Axis]: Non-Controlled Affiliates SDB HOLDCO, LLC dba Specialty Dental Brands      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 814    
Gross Additions [1] 51    
Gross Reductions [2] (1)    
Net Realized Gain(Loss) 0    
Net Change in Unrealized Appreciation (Depreciation) (262)    
Ending Fair Value Balance 602 814  
Dividend, Interest, PIK and Other Income 63    
Investment, Identifier [Axis]: Non-Controlled Affiliates SEM Holdings, LLC dba Southeast Mechanical, LLC      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 21,130    
Gross Additions [1] 4,262    
Gross Reductions [2] (1,892)    
Net Realized Gain(Loss) 0    
Net Change in Unrealized Appreciation (Depreciation) (316)    
Ending Fair Value Balance 23,184 21,130  
Dividend, Interest, PIK and Other Income 2,458    
Investment, Identifier [Axis]: Non-Controlled Affiliates Southeast Mechanical LLC Dba SEM Holdings LLC      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 21,130 16,144  
Gross Additions [1]   5,607  
Gross Reductions [2]   (602)  
Net Realized Gain(Loss)   0  
Net Change in Unrealized Appreciation (Depreciation)   (19)  
Ending Fair Value Balance   21,130 16,144
Dividend, Interest, PIK and Other Income   2,184  
Investment, Identifier [Axis]: Non-Controlled Affiliates Thrasio Holdings, Inc.      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance 17,738    
Gross Additions [1] 901    
Gross Reductions [2] 0    
Net Realized Gain(Loss) 0    
Net Change in Unrealized Appreciation (Depreciation) 269    
Ending Fair Value Balance 18,908 17,738  
Dividend, Interest, PIK and Other Income 770    
Investment, Identifier [Axis]: Non-Controlled Affiliates Thrasio, LLC      
Schedule Of Investments [Line Items]      
Beginning Fair Value Balance $ 17,738 0  
Gross Additions [1]   17,028  
Gross Reductions [2]   0  
Net Realized Gain(Loss)   0  
Net Change in Unrealized Appreciation (Depreciation)   710  
Ending Fair Value Balance   17,738 $ 0
Dividend, Interest, PIK and Other Income   $ 332  
[1] Gross additions may include increases in the cost basis of investments resulting from new portfolio investments, PIK, the accretion of discounts, the exchange of one or more existing securities for one or more new securities and the movement of an existing portfolio company into this category from a different category.
[2] Gross reductions may include decreases in the cost basis of investments resulting from principal collections related to investment repayments or sales, the exchange of one or more existing securities for one or more new securities and the movement of an existing portfolio company out of this category into a different category.