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Loans and Allowance for Credit Losses - Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) loan contract | Dec. 31, 2020 USD ($) contract loan
Loans and Leases Receivable Disclosure [Line Items] |  |
Unamortized net deferred fees | $ 26,900 | $ 30,800
Servicing asset | 120,300 | 124,000
Financing receivable, net | $ 6,990,633 | $ 7,650,633
Number of loans | contract | 7 | 10
Financing receivable, modifications, recorded investment | $ 16,500 | $ 19,200
Number of loans modified in TDR | loan | 0 | 2
Recorded investment - loans modified in TDR |  | $ 572
Number of non-performing loans that had collateral liquidated | loan |  | 2
Number of non-performing loans that had collateral liquidated amount |  | $ 870
Number of loans previously defaulted charged off | loan |  | 1
Number of loans previously defaulted charged off, amount |  | $ 138
ADC Loans |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing receivable, net | $ 1,500,000 |
Percent of ADC loan portfolio using interest reserves | 64.00% |
Home equity |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Unamortized net deferred fees | $ 15 | $ 30
Income Producing Commercial Real Estate and Real Estate Construction |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Minimum cash flow debt service coverage ratio | 1.15 |
Stress test assumption increase interest rates | 2.00% |
Commercial | Minimum |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Preferred loan term | 5 years |
Commercial | Maximum |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loan term | 10 years |
Preferred loan term | 7 years |
Amortization term | 25 years |
Consumer Portfolio Segment | Land Acquisition Development and Construction Loans | Maximum |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loan term | 24 months |
Real estate mortgage - residential | Land Acquisition Development and Construction Loans | Maximum |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loan term | 36 months |
Performing Loans |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Number of loans | loan | 5 | 7
Financing receivable, modifications, recorded investment | $ 10,200 | $ 10,500
Non-Performing Loans |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing receivable, modifications, recorded investment | $ 101 | $ 6,300
Number of loans subsequent defaults reclassified to non-performing | loan | 1 | 2

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