Quarterly report pursuant to Section 13 or 15(d)

Senior Secured Revolving Credit Facility - Additional Information (Details)

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Senior Secured Revolving Credit Facility - Additional Information (Details)
3 Months Ended
Jun. 27, 2022
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Line of Credit Facility [Line Items]        
Line of credit facility, outstanding balance   $ 19,200,000   $ 16,250,000
Credit Agreement | Minimum        
Line of Credit Facility [Line Items]        
Tangible assets $ 50,000,000      
Asset coverage ratio 0.3333      
Interest coverage ratio 0.40      
Credit Agreement | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Line of credit facility, outstanding balance   19,200,000   16,250,000
Unamortized closing fee   81,250   $ 87,500
Amortization expense   6,250 $ 6,250  
M&T Bank | Credit Agreement | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Line of credit facility, maximum borrowing capacity $ 25,000,000      
Aggregate sum of fair market values of publicly traded equity securities held, percentage 75.00%      
Fair market value of shares of ACV Auctions held, percentage 75.00%      
Aggregate sum of the fair market values of eligible private loans held, percentage 50.00%      
Aggregate sum of the fair market values of unsecured private loans held, percentage 50.00%      
Line of credit facility, available borrowing capacity $ 6,250,000 $ 5,800,000    
Maturity date Jun. 27, 2027      
Variable rate 0.25%      
Interest rate   8.84%    
Line of credit facility, unused capacity, commitment fee 0.30%      
Percentage of availability of aggregate borrowing base credit facility 25.00%      
Line of credit facility, outstanding balance $ 1,250,000      
M&T Bank | Credit Agreement | Revolving Credit Facility | SOFR        
Line of Credit Facility [Line Items]        
Variable rate 3.50%