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Loans and Leases - Aging Analysis of Past Due Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | $ 4,837,735 | $ 4,672,909
Less: unearned income and deferred costs and fees | (3,796) | (3,789)
Total originated loans and leases, net of unearned income and deferred costs and fees | 4,833,939 | 4,669,120
Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 1,077,635 | 1,091,651
Commercial and industrial | Agriculture |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 107,494 | 108,608
Commercial and industrial | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 970,141 | 983,043
Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 2,340,661 | 2,200,727
Commercial real estate | Agriculture |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 170,229 | 129,959
Commercial real estate | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 2,004,763 | 1,866,802
Commercial real estate | Construction |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 165,669 | 203,966
Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 1,333,894 | 1,302,941
Residential real estate | Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 229,608 | 241,256
Residential real estate | Mortgages |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 1,104,286 | 1,061,685
Consumer and other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 70,989 | 63,123
Consumer and other | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 58,326 | 50,979
Consumer and other | Indirect |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 12,663 | 12,144
Leases |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 14,556 | 14,467
Originated Loans and Leases |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 4,556,048 | 4,349,180
Total Loans | 4,572,537 | 4,362,332
90 days and accruing | 0 | 44
Nonaccrual | 19,340 | 16,253
Less: unearned income and deferred costs and fees | (3,796) | (3,789)
Less: unearned income and deferred costs and fees, current | (3,796) | (3,789)
Less: unearned income and deferred costs and fees, 90 days and accruing | 0 | 0
Less: unearned income and deferred costs and fees, nonaccrual | 0 | 0
Total originated loans and leases, net of unearned income and deferred costs and fees | 4,568,741 | 4,358,543
Total originated loans and leases, net of unearned income and deferred costs and fees, current | 4,552,252 | 4,345,391
Originated Loans and Leases | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 7,838 | 6,791
Less: unearned income and deferred costs and fees | 0 | 0
Total originated loans and leases, net of unearned income and deferred costs and fees | 7,838 | 6,791
Originated Loans and Leases | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 8,651 | 6,361
Less: unearned income and deferred costs and fees | 0 | 0
Total originated loans and leases, net of unearned income and deferred costs and fees | 8,651 | 6,361
Originated Loans and Leases | Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 1,029,897 | 1,039,395
Total Loans | 1,033,923 | 1,040,675
90 days and accruing | 0 | 0
Nonaccrual | 1,861 | 2,852
Originated Loans and Leases | Commercial and industrial | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 2,367 | 431
Originated Loans and Leases | Commercial and industrial | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,659 | 849
Originated Loans and Leases | Commercial and industrial | Agriculture |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 107,494 | 108,608
Total Loans | 107,494 | 108,608
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Originated Loans and Leases | Commercial and industrial | Agriculture | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Originated Loans and Leases | Commercial and industrial | Agriculture | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Originated Loans and Leases | Commercial and industrial | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 922,403 | 930,787
Total Loans | 926,429 | 932,067
90 days and accruing | 0 | 0
Nonaccrual | 1,861 | 2,852
Originated Loans and Leases | Commercial and industrial | Other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 2,367 | 431
Originated Loans and Leases | Commercial and industrial | Other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,659 | 849
Originated Loans and Leases | Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 2,158,441 | 1,989,272
Total Loans | 2,161,569 | 1,992,980
90 days and accruing | 0 | 0
Nonaccrual | 7,691 | 5,402
Originated Loans and Leases | Commercial real estate | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,272 | 1,583
Originated Loans and Leases | Commercial real estate | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,856 | 2,125
Originated Loans and Leases | Commercial real estate | Agriculture |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 169,934 | 129,712
Total Loans | 170,005 | 129,712
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Originated Loans and Leases | Commercial real estate | Agriculture | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 71 | 0
Originated Loans and Leases | Commercial real estate | Agriculture | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Originated Loans and Leases | Commercial real estate | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 1,824,222 | 1,657,074
Total Loans | 1,827,279 | 1,660,782
90 days and accruing | 0 | 0
Nonaccrual | 7,691 | 5,402
Originated Loans and Leases | Commercial real estate | Other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,201 | 1,583
Originated Loans and Leases | Commercial real estate | Other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,856 | 2,125
Originated Loans and Leases | Commercial real estate | Construction |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 164,285 | 202,486
Total Loans | 164,285 | 202,486
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Originated Loans and Leases | Commercial real estate | Construction | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Originated Loans and Leases | Commercial real estate | Construction | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Originated Loans and Leases | Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 1,283,529 | 1,244,514
Total Loans | 1,292,261 | 1,251,852
90 days and accruing | 0 | 0
Nonaccrual | 9,554 | 7,645
Originated Loans and Leases | Residential real estate | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 3,679 | 4,198
Originated Loans and Leases | Residential real estate | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 5,053 | 3,140
Originated Loans and Leases | Residential real estate | Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 206,447 | 211,319
Total Loans | 208,459 | 212,812
90 days and accruing | 0 | 0
Nonaccrual | 1,784 | 1,537
Originated Loans and Leases | Residential real estate | Home equity | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 986 | 1,045
Originated Loans and Leases | Residential real estate | Home equity | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,026 | 448
Originated Loans and Leases | Residential real estate | Mortgages |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 1,077,082 | 1,033,195
Total Loans | 1,083,802 | 1,039,040
90 days and accruing | 0 | 0
Nonaccrual | 7,770 | 6,108
Originated Loans and Leases | Residential real estate | Mortgages | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 2,693 | 3,153
Originated Loans and Leases | Residential real estate | Mortgages | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 4,027 | 2,692
Originated Loans and Leases | Consumer and other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 69,625 | 61,532
Total Loans | 70,228 | 62,358
90 days and accruing | 0 | 44
Nonaccrual | 234 | 354
Originated Loans and Leases | Consumer and other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 520 | 579
Originated Loans and Leases | Consumer and other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 83 | 247
Originated Loans and Leases | Consumer and other | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 57,354 | 50,042
Total Loans | 57,565 | 50,214
90 days and accruing | 0 | 38
Nonaccrual | 79 | 76
Originated Loans and Leases | Consumer and other | Other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 187 | 130
Originated Loans and Leases | Consumer and other | Other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 24 | 42
Originated Loans and Leases | Consumer and other | Indirect |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 12,271 | 11,490
Total Loans | 12,663 | 12,144
90 days and accruing | 0 | 6
Nonaccrual | 155 | 278
Originated Loans and Leases | Consumer and other | Indirect | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 333 | 449
Originated Loans and Leases | Consumer and other | Indirect | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 59 | 205
Originated Loans and Leases | Leases |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 14,556 | 14,467
Total Loans | 14,556 | 14,467
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Originated Loans and Leases | Leases | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Originated Loans and Leases | Leases | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Acquired Loans and Leases |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 262,510 | 307,027
Total Loans | 265,198 | 310,577
90 days and accruing | 1,316 | 1,146
Nonaccrual | 2,856 | 3,264
Less: unearned income and deferred costs and fees | 0 | 0
Total originated loans and leases, net of unearned income and deferred costs and fees | 265,198 | 310,577
Acquired Loans and Leases | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 67 | 1,256
Acquired Loans and Leases | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 2,621 | 2,294
Acquired Loans and Leases | Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 43,702 | 50,903
Total Loans | 43,712 | 50,976
90 days and accruing | 10 | 61
Nonaccrual | 22 | 0
Acquired Loans and Leases | Commercial and industrial | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 12
Acquired Loans and Leases | Commercial and industrial | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 10 | 61
Acquired Loans and Leases | Commercial and industrial | Agriculture |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 0 | 0
Acquired Loans and Leases | Commercial and industrial | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 43,702 | 50,903
Total Loans | 43,712 | 50,976
90 days and accruing | 10 | 61
Nonaccrual | 22 | 0
Acquired Loans and Leases | Commercial and industrial | Other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 12
Acquired Loans and Leases | Commercial and industrial | Other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 10 | 61
Acquired Loans and Leases | Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 178,253 | 206,853
Total Loans | 179,092 | 207,747
90 days and accruing | 525 | 515
Nonaccrual | 316 | 546
Acquired Loans and Leases | Commercial real estate | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 167
Acquired Loans and Leases | Commercial real estate | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 839 | 727
Acquired Loans and Leases | Commercial real estate | Agriculture |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 224 | 247
Total Loans | 224 | 247
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Acquired Loans and Leases | Commercial real estate | Agriculture | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Acquired Loans and Leases | Commercial real estate | Agriculture | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Acquired Loans and Leases | Commercial real estate | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 176,645 | 205,126
Total Loans | 177,484 | 206,020
90 days and accruing | 525 | 515
Nonaccrual | 316 | 546
Acquired Loans and Leases | Commercial real estate | Other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 167
Acquired Loans and Leases | Commercial real estate | Other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 839 | 727
Acquired Loans and Leases | Commercial real estate | Construction |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 1,384 | 1,480
Total Loans | 1,384 | 1,480
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Acquired Loans and Leases | Commercial real estate | Construction | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Acquired Loans and Leases | Commercial real estate | Construction | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Acquired Loans and Leases | Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 39,797 | 48,510
Total Loans | 41,633 | 51,089
90 days and accruing | 781 | 570
Nonaccrual | 2,518 | 2,718
Acquired Loans and Leases | Residential real estate | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 64 | 1,073
Acquired Loans and Leases | Residential real estate | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 1,772 | 1,506
Acquired Loans and Leases | Residential real estate | Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 20,300 | 27,279
Total Loans | 21,149 | 28,444
90 days and accruing | 59 | 130
Nonaccrual | 1,414 | 1,604
Acquired Loans and Leases | Residential real estate | Home equity | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 46 | 601
Acquired Loans and Leases | Residential real estate | Home equity | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 803 | 564
Acquired Loans and Leases | Residential real estate | Mortgages |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 19,497 | 21,231
Total Loans | 20,484 | 22,645
90 days and accruing | 722 | 440
Nonaccrual | 1,104 | 1,114
Acquired Loans and Leases | Residential real estate | Mortgages | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 18 | 472
Acquired Loans and Leases | Residential real estate | Mortgages | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 969 | 942
Acquired Loans and Leases | Consumer and other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 758 | 761
Total Loans | 761 | 765
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Acquired Loans and Leases | Consumer and other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 3 | 4
Acquired Loans and Leases | Consumer and other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Acquired Loans and Leases | Consumer and other | Other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current Loans | 758 | 761
Total Loans | 761 | 765
90 days and accruing | 0 | 0
Nonaccrual | 0 | 0
Acquired Loans and Leases | Consumer and other | Other | 30-89 days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 3 | 4
Acquired Loans and Leases | Consumer and other | Other | 90 days or more |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Past due | 0 | 0
Acquired Loans and Leases | Consumer and other | Indirect |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 0 | 0
Acquired Loans and Leases | Leases |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | $ 0 | $ 0

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