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Loans - Collateral Pledged Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | $ 3,660,081 | $ 3,867,383
Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 20,245 | 14,980
ACL Allocation | 1,397 | 1,857
Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 17,736 | 14,656
Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 2,509 | 324
Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial and industrial | Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due |  | 2,455
ACL Allocation |  | 252
Commercial and industrial | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due |  | 2,245
Commercial and industrial | Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due |  | 210
Commercial and industrial | Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due |  | 0
Commercial |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 2,173,200 | 2,192,271
Commercial | Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 20,245 | 14,980
ACL Allocation | 1,397 | 1,857
Commercial | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 17,736 | 14,656
Commercial | Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 2,509 | 324
Commercial | Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Owner occupied real estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 521,186 | 496,306
Commercial | Owner occupied real estate | Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 12,489 | 11,423
ACL Allocation | 1,179 | 1,605
Commercial | Owner occupied real estate | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 12,386 | 11,309
Commercial | Owner occupied real estate | Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 103 | 114
Commercial | Owner occupied real estate | Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Non–owner occupied real estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 1,016,377 | 999,636
Commercial | Non–owner occupied real estate | Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 3,172 | 1,032
ACL Allocation | 0 | 0
Commercial | Non–owner occupied real estate | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 3,172 | 1,032
Commercial | Non–owner occupied real estate | Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Non–owner occupied real estate | Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Residential spec homes |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 10,142 | 10,070
Commercial | Residential spec homes | Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
ACL Allocation | 0 | 0
Commercial | Residential spec homes | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Residential spec homes | Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Residential spec homes | Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Development & spec land |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 31,957 | 26,372
Commercial | Development & spec land | Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 964 | 70
ACL Allocation | 0 | 0
Commercial | Development & spec land | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 964 | 70
Commercial | Development & spec land | Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Development & spec land | Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 0 | 0
Commercial | Commercial and industrial |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 593,538 | $ 659,887
Commercial | Commercial and industrial | Collateral Pledged |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 3,620 |
ACL Allocation | 218 |
Commercial | Commercial and industrial | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 1,214 |
Commercial | Commercial and industrial | Accounts Receivable/Equipment |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | 2,406 |
Commercial | Commercial and industrial | Other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total Past Due | $ 0 |

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