v3.25.1
Long Term Debt (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jan. 14, 2025
May 03, 2023
Jun. 18, 2021
Feb. 29, 2024
Jul. 31, 2003
Dec. 31, 2024
Dec. 31, 2023
Nov. 13, 2024
Long Term Debt [Line Items]                
Aggregate principal amount     $ 625,000,000          
Aggregate principal amount including over allotment     75,000,000          
Pro rata share rate               92.94%
Principal and interest           $ 291,600,000    
Open-market transactions           $ 36,536,000  
Extinguishment of debt           37,878,000  
Net carrying value           210,727,000    
Unamortized debt discount           2,423,000    
Interest expense           5,826,000 5,976,000  
Restricted cash           49,026,000 73,234,000  
Expected payments, receivables one year           161,400,000    
Expected payments, receivables two year           96,800,000    
Expected payments, receivables third year           108,100,000    
Total redemption price           251,529,000 208,476,000  
Net of unamortized debt issuance costs           $ 381,366,000 626,583,000  
Trust preferred securities         $ 10,000,000      
Convertible Senior Notes [Member]                
Long Term Debt [Line Items]                
Aggregate principal amount     625,000,000          
Aggregate principal amount including over allotment     75,000,000          
Principal and interest     $ 291,600,000          
Interest rate, description           the Notes bore interest at a rate of 0.75% per annum, payable semiannually in arrears on January 1 and July 1 of each year, beginning on January 1, 2022.    
Debt issuance costs           $ 608,900,000    
Repurchased principal amount             74,200,000  
Open-market transactions             36,500,000  
Extinguishment of debt             37,900,000  
Reorganization items, net           2,400,000    
Net carrying value           290,500,000 286,800,000  
Unamortized debt discount             3,700,000  
Interest expense           $ 3,400,000 4,300,000  
Effective interest rate           1.30%    
Financing of Beneficial Interests in Securitizations [Member]                
Long Term Debt [Line Items]                
Net of unamortized debt issuance costs           $ 17,700,000 15,378,000  
Junior Subordinated Debt [Member]                
Long Term Debt [Line Items]                
Net of unamortized debt issuance costs           10,310,000 10,310,000  
Owned finance subsidiary rate         100.00%      
Variable rate         3.05%      
Maturity date         Oct. 07, 2033      
Subsequent Event [Member]                
Long Term Debt [Line Items]                
Pro rata share rate 92.94%              
Principal amount outstanding $ 290,500,000              
Securitization Debt of Consolidated VIEs                
Long Term Debt [Line Items]                
Restricted cash           29,200,000 28,500,000  
Total redemption price       $ 35,600,000        
United Auto Credit Corporation [Member]                
Long Term Debt [Line Items]                
Beneficial interests   $ 24,500,000            
Received proceeds   $ 24,100,000            
Expected Repurchases Period Start   March 2025            
Expected Repurchases Period End   September 2029            
United Auto Credit Corporation [Member] | Financing of Beneficial Interests in Securitizations [Member]                
Long Term Debt [Line Items]                
Net of unamortized debt issuance costs           17,700,000 15,400,000  
Collateral pledged facility           $ 18,300,000 $ 15,800,000  
2024-1 securitization transaction [Member]                
Long Term Debt [Line Items]                
Beneficial interests   $ 15,800,000            
Received proceeds   $ 15,600,000            
Expected Repurchases Period Start   August 2026            
Expected Repurchases Period End   November 2030