Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS - Narrative (Details)

v3.24.3
INVESTMENTS - Narrative (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2024
USD ($)
portfolioCompany
state
industry
Jul. 31, 2024
USD ($)
May 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
portfolioCompany
state
industry
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
portfolioCompany
state
industry
Sep. 30, 2023
USD ($)
Mar. 31, 2024
USD ($)
Summary of Investment Holdings [Line Items]                
Principal repayments of investments           $ 28,000 $ 0  
Purchase of investments           20,098 114,788  
Success fee income       $ 150 $ 0 $ 1,703 $ 0  
Number of investment portfolio company | portfolioCompany 22     22   22    
Number of states which have invested in the company location | state 18     18   18    
Number of industries that have made investments | industry 15     15   15    
Fair Value $ 853,307     $ 853,307   $ 853,307   $ 920,504 [1]
Uncollectible receivables allowance, minimum required day for uncollectible adjustment           90 days    
Gross receivables from portfolio companies 2,100     2,100   $ 2,100   2,200
Allowance for uncollectible receivables 1,600     1,600   1,600   $ 1,400
Five Largest Portfolio Investments | Investment Portfolio Benchmark | Customer Concentration Risk                
Summary of Investment Holdings [Line Items]                
Fair Value 402,600     $ 402,600   $ 402,600    
Percentage of Total Investments           47.20%    
Funko Acquisition Holdings, LLC                
Summary of Investment Holdings [Line Items]                
Principal repayments of investments     $ 21          
Realized gain on preferred equity     $ 2          
Nocturne Villa Rentals, Inc.                
Summary of Investment Holdings [Line Items]                
Purchase of investments   $ 18,500            
Nth Degree Investment Group, LLC                
Summary of Investment Holdings [Line Items]                
Principal repayments of investments 25,000              
Realized gain on preferred equity 42,300              
Success fee income $ 100              
[1] Cumulative gross unrealized appreciation for federal income tax purposes is $180.5 million; cumulative gross unrealized depreciation for federal income tax purposes is $115.8 million. Cumulative net unrealized appreciation is $64.7 million, based on a tax cost of $855.8 million.