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Loans and Allowance for Credit Losses - Summary of Contractually Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | $ 4,867,572 | $ 4,996,776
Factored receivables greater than 90 days past due | 39,268 | 72,774
Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 139,134 | 160,677
Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 73,519 | 39,928
Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 19,182 | 32,983
Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 46,433 | 87,766
Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 4,728,438 | 4,836,099
Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 632,775 | 779,158
Factored receivables greater than 90 days past due | 0 | 0
Commercial real estate | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,037 | 9,282
Commercial real estate | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,021 | 1,512
Commercial real estate | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 147
Commercial real estate | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 16 | 7,623
Commercial real estate | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 631,738 | 769,876
Construction, land development, land |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 123,464 | 219,647
Factored receivables greater than 90 days past due | 0 | 22
Construction, land development, land | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 175 | 1,509
Construction, land development, land | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 30 | 185
Construction, land development, land | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 1,001
Construction, land development, land | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 145 | 323
Construction, land development, land | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 123,289 | 218,138
1-4 family residential properties |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 123,115 | 157,147
Factored receivables greater than 90 days past due | 134 | 0
1-4 family residential properties | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 2,176 | 3,378
1-4 family residential properties | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 730 | 1,978
1-4 family residential properties | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 332 | 448
1-4 family residential properties | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,114 | 952
1-4 family residential properties | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 120,939 | 153,769
Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 77,394 | 103,685
Factored receivables greater than 90 days past due | 0 | 0
Farmland | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,509 | 1,707
Farmland | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 378 | 407
Farmland | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 154 | 1,000
Farmland | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 977 | 300
Farmland | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 75,885 | 101,978
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,430,429 | 1,562,957
Factored receivables greater than 90 days past due | 0 | 35
Commercial | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 6,290 | 9,619
Commercial | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 996 | 2,084
Commercial | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 346 | 1,765
Commercial | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 4,948 | 5,770
Commercial | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,424,139 | 1,553,338
Factored receivables |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,699,537 | 1,120,770
Factored receivables greater than 90 days past due | 39,134 | 72,717
Factored receivables | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 127,545 | 134,600
Factored receivables | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 70,109 | 33,377
Factored receivables | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 18,302 | 28,506
Factored receivables | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 39,134 | 72,717
Factored receivables | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,571,992 | 986,170
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 10,885 | 15,838
Factored receivables greater than 90 days past due | 0 | 0
Consumer | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 402 | 582
Consumer | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 255 | 385
Consumer | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 48 | 116
Consumer | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 99 | 81
Consumer | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 10,483 | 15,256
Mortgage warehouse |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 769,973 | 1,037,574
Factored receivables greater than 90 days past due | 0 | 0
Mortgage warehouse | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Mortgage warehouse | Past Due 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Mortgage warehouse | Past Due 60-90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Mortgage warehouse | Past Due 90 Days or More |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Mortgage warehouse | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | $ 769,973 | $ 1,037,574

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