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Fair Value of Financial Instruments - Summary of Information about Significant Unobservable Inputs Utilized in Company's Nonrecurring Level 3 Fair Value Measurements (Details) $ in Thousands | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans | $ 1,291,926 | $ 1,109,217
Significant Unobservable Inputs (Level 3) |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans | 1,291,926 | 1,109,217
Fair Value, Measurements, Nonrecurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans | 814 | 87
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3) |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans | $ 814 | $ 87
Fair Value, Measurements, Nonrecurring | SBA loans—real estate | Income approach - income capitalization | Capitalization rate |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs | 0.120 |
Fair Value, Measurements, Nonrecurring | SBA loans—real estate | Minimum | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs | 0.02 |
Fair Value, Measurements, Nonrecurring | SBA loans—real estate | Maximum | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs | 0.17 |
Fair Value, Measurements, Nonrecurring | SBA loans—real estate | Weighted Average | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs | 0.087 |
Fair Value, Measurements, Nonrecurring | SBA loans—real estate | Weighted Average | Income approach - income capitalization | Capitalization rate |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs | 0.120 |
Fair Value, Measurements, Nonrecurring | SBA loans—real estate | Significant Unobservable Inputs (Level 3) | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans | $ 419 |
Fair Value, Measurements, Nonrecurring | SBA loans—real estate | Significant Unobservable Inputs (Level 3) | Income approach - income capitalization | Capitalization rate |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans | $ 395 |
Fair Value, Measurements, Nonrecurring | SBA loans—non-real estate | Minimum | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs |  | (0.035)
Fair Value, Measurements, Nonrecurring | SBA loans—non-real estate | Maximum | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs |  | 0.071
Fair Value, Measurements, Nonrecurring | SBA loans—non-real estate | Weighted Average | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Measurements Inputs |  | 0.029
Fair Value, Measurements, Nonrecurring | SBA loans—non-real estate | Significant Unobservable Inputs (Level 3) | Market approach | Market data comparison |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans |  | $ 25

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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