v3.26.1
Long Term Debt - Schedule of Aggregate Principal Balance and Net Carrying Value of Finance Receivables Pledged to Securitization Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Asset Pledged as Collateral without Right    
Debt Instrument [Line Items]    
Aggregate Principal Balance $ 674,592 $ 490,303
Asset Pledged as Collateral with Right    
Debt Instrument [Line Items]    
Fair Value 601,066 441,084
United Auto Credit 2022-2 | Asset Pledged as Collateral without Right    
Debt Instrument [Line Items]    
Aggregate Principal Balance 22,731 28,924
United Auto Credit 2022-2 | Asset Pledged as Collateral with Right    
Debt Instrument [Line Items]    
Fair Value 21,554 25,869
United Auto Credit 2023-1 | Asset Pledged as Collateral without Right    
Debt Instrument [Line Items]    
Aggregate Principal Balance 41,591 51,291
United Auto Credit 2023-1 | Asset Pledged as Collateral with Right    
Debt Instrument [Line Items]    
Fair Value 34,069 44,224
United Auto Credit 2024-1 | Asset Pledged as Collateral without Right    
Debt Instrument [Line Items]    
Aggregate Principal Balance 129,109 152,603
United Auto Credit 2024-1 | Asset Pledged as Collateral with Right    
Debt Instrument [Line Items]    
Fair Value 112,638 134,903
United Auto Credit 2025-1 | Asset Pledged as Collateral without Right    
Debt Instrument [Line Items]    
Aggregate Principal Balance 220,932 257,485
United Auto Credit 2025-1 | Asset Pledged as Collateral with Right    
Debt Instrument [Line Items]    
Fair Value 202,227 236,088
United Auto Credit 2026-1-A | Asset Pledged as Collateral without Right    
Debt Instrument [Line Items]    
Aggregate Principal Balance 260,229 0
United Auto Credit 2026-1-A | Asset Pledged as Collateral with Right    
Debt Instrument [Line Items]    
Fair Value $ 230,578 $ 0