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Summary of Significant Accounting Policies - Additional Information (Details) | 6 Months Ended | 12 Months Ended |
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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 |  |  |

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