v3.26.1
Summary of Significant Accounting Policies - Additional Information (Details)
3 Months Ended
Nov. 25, 2025
USD ($)
Aug. 29, 2025
USD ($)
Mar. 08, 2025
USD ($)
Mar. 31, 2026
USD ($)
Facility
Dec. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Jan. 15, 2025
USD ($)
Jan. 14, 2025
Accounting Policies [Line Items]                
Other comprehensive income (loss)       $ 0        
Aggregate principal balance held for investment at fair value       902,000,000 $ 909,900,000      
Finance receivables held for investment at fair value       804,600,000 808,600,000      
Cash and cash equivalents       14,478,000 10,384,000   $ 35,352,000  
Restricted cash       $ 59,221,000 55,914,000   $ 26,089,000  
Percentage of pro rata share               92.94%
Mudrick Capital Management, L.P.                
Accounting Policies [Line Items]                
Shareholder ownership percentage     76.50%         76.50%
ASU 2023-07                
Accounting Policies [Line Items]                
Change in accounting principle, accounting standards update, adopted [true false]       true        
Change in accounting principle, accounting standards update, adoption date       Jan. 01, 2024        
Change in accounting principle, accounting standards update, immaterial effect [true false]       true        
ASU 2023-09                
Accounting Policies [Line Items]                
Change in accounting principle, accounting standards update, adopted [true false]       true        
Change in accounting principle, accounting standards update, adoption date       Jan. 01, 2025        
Change in accounting principle, accounting standards update, immaterial effect [true false]       true        
Warehouse Credit Facility                
Accounting Policies [Line Items]                
Restricted cash       $ 6,151,000 16,106,000      
Borrowing capacity       14,900,000 $ 11,300,000      
Delayed Draw Term Loan Facility | Mudrick Capital Management, L.P.                
Accounting Policies [Line Items]                
Agreement maturity date     Dec. 31, 2026          
Aggregate borrowing limit           $ 35,000,000    
Delayed draw borrowing capacity       $ 8,000,000        
Debt instrument aggregate principal amount     $ 8,000,000          
Borrowing capacity     $ 25,000,000     $ 35,000,000    
5.00% Unsecured Convertible Notes Due 2030                
Accounting Policies [Line Items]                
Agreement maturity date   Oct. 01, 2030            
Debt instrument aggregate principal amount   $ 10,000,000            
Debt instrument interest rate   5.00%            
Delayed Draw Notes                
Accounting Policies [Line Items]                
Agreement maturity date Nov. 25, 2026              
Delayed draw borrowing capacity $ 10,500,000              
Debt instrument aggregate principal amount $ 10,500,000              
UACC                
Accounting Policies [Line Items]                
Number of warehouse credit facilities | Facility       3        
UACC | Warehouse Credit Facility                
Accounting Policies [Line Items]                
Cash deposits included in restricted cash       $ 59,100,000        
Aggregate borrowing limit       600,000,000        
Borrowing capacity       14,900,000        
Outstanding borrowings       $ 159,500,000