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Summary of Significant Accounting Policies - Additional Information (Details)
 6 Months Ended 12 Months Ended
Jun. 30, 2021
reportableSegment
Dec. 31, 2022
USD ($)
derivativeInstument
reportableSegment
Dec. 31, 2021
USD ($)
derivativeInstument
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Summary Of Significant Accounting Policies [Line Items]          
Accrued interest reversed   $ 0 $ 0 $ 0  
Number of days within which accrual of interest income discontinues   90 days      
Period after which consumer loans are charged off   120 days      
Interest income not recognized until loan balance reduced, amount   $ 0      
Net reduction of retained earnings   (888,971,000) (858,864,000) (726,781,000) $ (636,590,000)
ACL Allocation   42,807,000 42,213,000    
Allowance for credit losses   2,444,000 2,082,000 2,026,000 0
Deferred tax assets   $ 45,389,000 39,292,000    
Equipment loan term   60 months      
Change in national retail sales forecast period   1 year      
Change in national home price index forecast period   1 year      
Change in national gross domestic product forecast period   1 year      
Number of reportable segments | reportableSegment 3 4      
Payments Segment          
Summary Of Significant Accounting Policies [Line Items]          
Transactional payment and audit fees   $ 13,694,000 $ 7,451,000 127,000  
Cash Flow Hedging          
Summary Of Significant Accounting Policies [Line Items]          
Number of instruments held | derivativeInstument   1 1    
Fair Value Hedging          
Summary Of Significant Accounting Policies [Line Items]          
Number of instruments held | derivativeInstument   0 0    
Automobiles          
Summary Of Significant Accounting Policies [Line Items]          
Useful life of assets   5 years      
Aircraft          
Summary Of Significant Accounting Policies [Line Items]          
Useful life of assets   20 years      
Retained Earnings          
Summary Of Significant Accounting Policies [Line Items]          
Net reduction of retained earnings   $ (498,456,000) $ (399,351,000) (289,583,000) (229,030,000)
Cumulative Effect, Period of Adoption, Adjustment          
Summary Of Significant Accounting Policies [Line Items]          
Net reduction of retained earnings         1,770,000
ACL Allocation         269,000
Allowance for credit losses     $ 0 $ 0 126,000
Credit loss, liability         1,918,000
Deferred tax assets         543,000
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings          
Summary Of Significant Accounting Policies [Line Items]          
Net reduction of retained earnings         $ 1,770,000
Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Nonaccrual status term   90 days      
Estimated useful lives   4 years      
Minimum | Capitalized Software          
Summary Of Significant Accounting Policies [Line Items]          
Estimated useful lives   3 years      
Minimum | Buildings          
Summary Of Significant Accounting Policies [Line Items]          
Useful life of assets   5 years      
Minimum | Furniture, fixtures and equipment          
Summary Of Significant Accounting Policies [Line Items]          
Useful life of assets   3 years      
Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Estimated useful lives   11 years      
Maximum | Capitalized Software          
Summary Of Significant Accounting Policies [Line Items]          
Estimated useful lives   5 years      
Maximum | Buildings          
Summary Of Significant Accounting Policies [Line Items]          
Useful life of assets   40 years      
Maximum | Furniture, fixtures and equipment          
Summary Of Significant Accounting Policies [Line Items]          
Useful life of assets   10 years