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Loans and Allowance for Credit Losses - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 USD ($) loan | Jun. 30, 2022 USD ($) loan contract | Jun. 30, 2021 USD ($) loan | Dec. 31, 2021 USD ($) contract
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Deferred commitment fee | $ 24,600 | $ 24,600 |  | $ 26,900
Servicing asset at fair value | 362,300 | 362,300 |  | 351,100
Loans, net | 7,082,021 | $ 7,082,021 |  | $ 6,990,633
Number of TDR loans | contract |  | 4 |  |
Troubled debt restructured |  | $ 5,300 |  |
Gain on cancellation of debt |  | $ 1,400 |  |
Loans and Leases Receivable, Nonperforming, Number of Loans Sold | loan |  | 2 | 1 |
ADC Loans |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loans, net | $ 1,500,000 | $ 1,500,000 |  |
Percent of ADC loan portfolio using interest reserves | 51.20% | 51.20% |  |
Income Producing Commercial Real Estate and Real Estate Construction | Minimum |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Minimum cash flow debt service coverage ratio | 1.15 | 1.15 |  |
Income Producing Commercial Real Estate and Real Estate Construction | Maximum |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Minimum cash flow debt service coverage ratio | 1.0 | 1.0 |  |
Commercial | Minimum |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loan period, preferred term |  | 5 years |  |
Commercial | Maximum |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loan period |  | 10 years |  |
Loan period, preferred 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 period |  | 24 months |  |
Real estate mortgage - residential | Land Acquisition Development and Construction Loans | Maximum |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loan period |  | 36 months |  |
Non-Performing Loans |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Number of loans subsequent defaults reclassified to non-performing | loan | 3 | 3 |  |
Restructured and subsequent defaulted | $ 11,100 | $ 11,100 | $ 2,400 |
Performing Financial Instruments |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Number of TDR loans | contract |  |  |  | 7
Troubled debt restructured |  | $ 16,500 |  |
Number of loans subsequent defaults reclassified to non-performing | loan |  | 0 | 1,000 |
Restructured and subsequent defaulted |  |  | $ 101 |

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