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Allowance for Loan and Lease Losses - Credit Quality Indicators by Commercial and Industrial Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases, net of unearned income and deferred costs and fees | $ 4,937,822 | $ 4,917,550
Commercial and industrial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 42,295 |
2021 | 84,067 |
2022 | 72,816 |
2023 | 89,807 |
2024 | 49,454 |
Prior | 284,286 |
Revolving Loans Amortized Cost Basis | 264,462 |
Revolving Loans Converted to Term | 655 |
Total loans and leases, net of unearned income and deferred costs and fees | 887,843 |
Commercial and industrial | Other | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 42,295 |
2021 | 83,851 |
2022 | 71,313 |
2023 | 88,343 |
2024 | 46,007 |
Prior | 283,285 |
Revolving Loans Amortized Cost Basis | 260,678 |
Revolving Loans Converted to Term | 655 |
Total loans and leases, net of unearned income and deferred costs and fees | 876,427 |
Commercial and industrial | Other | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 104 |
2022 | 263 |
2023 | 1,178 |
2024 | 2,821 |
Prior | 136 |
Revolving Loans Amortized Cost Basis | 540 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 5,042 |
Commercial and industrial | Other | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 112 |
2022 | 1,240 |
2023 | 286 |
2024 | 626 |
Prior | 866 |
Revolving Loans Amortized Cost Basis | 3,244 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 6,374 |
Commercial and industrial | Agriculture |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 1,620 |
2021 | 13,401 |
2022 | 15,126 |
2023 | 9,138 |
2024 | 5,205 |
Prior | 4,705 |
Revolving Loans Amortized Cost Basis | 46,190 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 95,385 |
Commercial and industrial | Agriculture | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 1,520 |
2021 | 13,214 |
2022 | 14,996 |
2023 | 8,135 |
2024 | 5,170 |
Prior | 2,395 |
Revolving Loans Amortized Cost Basis | 38,484 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 83,914 |
Commercial and industrial | Agriculture | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 80 |
2022 | 127 |
2023 | 109 |
2024 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 435 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 751 |
Commercial and industrial | Agriculture | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 100 |
2021 | 107 |
2022 | 3 |
2023 | 894 |
2024 | 35 |
Prior | 2,310 |
Revolving Loans Amortized Cost Basis | 7,271 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 10,720 |
Commercial real estate | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 99,145 |
2021 | 249,330 |
2022 | 243,136 |
2023 | 263,773 |
2024 | 346,447 |
Prior | 524,152 |
Revolving Loans Amortized Cost Basis | 392,204 |
Revolving Loans Converted to Term | 2,752 |
Total loans and leases, net of unearned income and deferred costs and fees | 2,120,939 |
Commercial real estate | Other | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 99,145 |
2021 | 247,630 |
2022 | 239,644 |
2023 | 258,039 |
2024 | 340,595 |
Prior | 505,182 |
Revolving Loans Amortized Cost Basis | 381,049 |
Revolving Loans Converted to Term | 2,752 |
Total loans and leases, net of unearned income and deferred costs and fees | 2,074,036 |
Commercial real estate | Other | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 0 |
2022 | 2,728 |
2023 | 2,400 |
2024 | 5,503 |
Prior | 9,253 |
Revolving Loans Amortized Cost Basis | 3,048 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 22,932 |
Commercial real estate | Other | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 1,700 |
2022 | 764 |
2023 | 3,334 |
2024 | 349 |
Prior | 9,717 |
Revolving Loans Amortized Cost Basis | 8,107 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 23,971 |
Commercial real estate | Agriculture |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 3,538 |
2021 | 32,111 |
2022 | 45,342 |
2023 | 27,017 |
2024 | 19,767 |
Prior | 41,108 |
Revolving Loans Amortized Cost Basis | 17,730 |
Revolving Loans Converted to Term | 448 |
Total loans and leases, net of unearned income and deferred costs and fees | 187,061 |
Commercial real estate | Agriculture | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 2,028 |
2021 | 30,493 |
2022 | 42,366 |
2023 | 23,728 |
2024 | 14,147 |
Prior | 39,835 |
Revolving Loans Amortized Cost Basis | 16,842 |
Revolving Loans Converted to Term | 448 |
Total loans and leases, net of unearned income and deferred costs and fees | 169,887 |
Commercial real estate | Agriculture | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 1,510 |
2021 | 0 |
2022 | 2,418 |
2023 | 120 |
2024 | 1,264 |
Prior | 361 |
Revolving Loans Amortized Cost Basis | 11 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 5,684 |
Commercial real estate | Agriculture | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 1,618 |
2022 | 558 |
2023 | 3,169 |
2024 | 4,356 |
Prior | 912 |
Revolving Loans Amortized Cost Basis | 877 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 11,490 |
Commercial real estate | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 1,194 |
2021 | 22,565 |
2022 | 9,552 |
2023 | 3,011 |
2024 | 2,165 |
Prior | 5,111 |
Revolving Loans Amortized Cost Basis | 123,869 |
Revolving Loans Converted to Term | 983 |
Total loans and leases, net of unearned income and deferred costs and fees | 168,450 |
Commercial real estate | Construction | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 1,194 |
2021 | 22,565 |
2022 | 9,552 |
2023 | 3,011 |
2024 | 2,165 |
Prior | 4,169 |
Revolving Loans Amortized Cost Basis | 121,760 |
Revolving Loans Converted to Term | 983 |
Total loans and leases, net of unearned income and deferred costs and fees | 165,399 |
Commercial real estate | Construction | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 0 |
2022 | 0 |
2023 | 0 |
2024 | 0 |
Prior | 603 |
Revolving Loans Amortized Cost Basis | 2,109 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 2,712 |
Commercial real estate | Construction | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2020 | 0 |
2021 | 0 |
2022 | 0 |
2023 | 0 |
2024 | 0 |
Prior | 339 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term | 0 |
Total loans and leases, net of unearned income and deferred costs and fees | 339 |
Originated |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases, net of unearned income and deferred costs and fees | 4,724,277 | 4,697,401
Loans and Leases, gross |  | 3,265,633
Originated | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 3,177,741
Originated | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 29,800
Originated | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 58,092
Originated | Commercial and industrial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 863,199
Originated | Commercial and industrial | Other | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 851,517
Originated | Commercial and industrial | Other | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 8,306
Originated | Commercial and industrial | Other | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 3,376
Originated | Commercial and industrial | Agriculture |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 105,786
Originated | Commercial and industrial | Agriculture | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 89,892
Originated | Commercial and industrial | Agriculture | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 1,698
Originated | Commercial and industrial | Agriculture | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 14,196
Originated | Commercial real estate | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 1,899,645
Originated | Commercial real estate | Other | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 1,857,142
Originated | Commercial real estate | Other | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 16,623
Originated | Commercial real estate | Other | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 25,880
Originated | Commercial real estate | Agriculture |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 184,701
Originated | Commercial real estate | Agriculture | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 166,888
Originated | Commercial real estate | Agriculture | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 3,173
Originated | Commercial real estate | Agriculture | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 14,640
Originated | Commercial real estate | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 212,302
Originated | Commercial real estate | Construction | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 212,302
Originated | Commercial real estate | Construction | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Originated | Commercial real estate | Construction | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases, net of unearned income and deferred costs and fees | $ 213,545 | 220,149
Loans and Leases, gross |  | 185,993
Acquired | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 183,586
Acquired | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 2,407
Acquired | Commercial and industrial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 39,076
Acquired | Commercial and industrial | Other | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 38,879
Acquired | Commercial and industrial | Other | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial and industrial | Other | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 197
Acquired | Commercial and industrial | Agriculture |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial and industrial | Agriculture | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial and industrial | Agriculture | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial and industrial | Agriculture | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial real estate | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 145,385
Acquired | Commercial real estate | Other | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 143,175
Acquired | Commercial real estate | Other | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial real estate | Other | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 2,210
Acquired | Commercial real estate | Agriculture |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 197
Acquired | Commercial real estate | Agriculture | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 197
Acquired | Commercial real estate | Agriculture | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial real estate | Agriculture | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial real estate | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 1,335
Acquired | Commercial real estate | Construction | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 1,335
Acquired | Commercial real estate | Construction | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | 0
Acquired | Commercial real estate | Construction | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross |  | $ 0

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