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Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 35,771 | $ 37,133 | $ 36,151 | $ 35,933 | $ 35,933
Provision charged to expense | 1,543 | 666 | 4,418 | 4,659 | 7,521
Losses charged off | (2,828) | (2,443) | (8,331) | (7,123) | (11,085)
Recoveries | 1,305 | 1,035 | 3,553 | 2,922 | 3,782
Ending balance | 35,791 | 36,391 | 35,791 | 36,391 | 36,151
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 736 | 1,391 | 736 | 1,391 | 991
Collectively evaluated for impairment | 35,055 | 35,000 | 35,055 | 35,000 | 35,160
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 46,883 | 46,199 | 46,883 | 46,199 | 47,412
Collectively evaluated for impairment | 3,131,005 | 3,067,222 | 3,131,005 | 3,067,222 | 3,075,528
Commercial [Member] | Construction [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 740 | 669 | 686 | 884 | 884
Provision charged to expense | 54 | (19) | 91 | (239) | (237)
Losses charged off | 0 | (6) | 0 | (10) | (10)
Recoveries | 23 | 28 | 40 | 37 | 49
Ending balance | 817 | 672 | 817 | 672 | 686
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 25 | 0 | 25 | 25
Collectively evaluated for impairment | 817 | 647 | 817 | 647 | 661
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 2,804 | 4,766 | 2,804 | 4,766 | 4,584
Collectively evaluated for impairment | 78,668 | 69,516 | 78,668 | 69,516 | 71,895
Commercial [Member] | Real Estate [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 14,658 | 15,299 | 14,509 | 14,191 | 14,191
Provision charged to expense | 298 | (1) | 895 | 1,622 | 2,281
Losses charged off | (460) | (249) | (937) | (776) | (2,038)
Recoveries | 142 | 53 | 171 | 65 | 75
Ending balance | 14,638 | 15,102 | 14,638 | 15,102 | 14,509
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 641 | 1,301 | 641 | 1,301 | 966
Collectively evaluated for impairment | 13,997 | 13,801 | 13,997 | 13,801 | 13,543
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 33,612 | 29,240 | 33,612 | 29,240 | 31,465
Collectively evaluated for impairment | 1,150,020 | 1,168,364 | 1,150,020 | 1,168,364 | 1,157,215
Commercial [Member] | Equipment Lease Financing [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 17 | 33 | 18 | 42 | 42
Provision charged to expense | (2) | (14) | (3) | (23) | (24)
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Ending balance | 15 | 19 | 15 | 19 | 18
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 15 | 19 | 15 | 19 | 18
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 1,986 | 3,290 | 1,986 | 3,290 | 3,042
Commercial [Member] | Other [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 4,637 | 4,993 | 5,039 | 4,656 | 4,656
Provision charged to expense | 82 | 210 | 98 | 1,229 | 1,744
Losses charged off | (521) | (549) | (1,078) | (1,386) | (1,893)
Recoveries | 407 | 308 | 546 | 463 | 532
Ending balance | 4,605 | 4,962 | 4,605 | 4,962 | 5,039
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 95 | 65 | 95 | 65 | 0
Collectively evaluated for impairment | 4,510 | 4,897 | 4,510 | 4,897 | 5,039
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 8,589 | 10,124 | 8,589 | 10,124 | 9,481
Collectively evaluated for impairment | 338,056 | 329,213 | 338,056 | 329,213 | 341,553
Residential [Member] | Construction [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 618 | 581 | 660 | 629 | 629
Provision charged to expense | (44) | 49 | (58) | 0 | 31
Losses charged off | 0 | 0 | (28) | 0 | 0
Recoveries | 0 | 0 | 0 | 1 | 0
Ending balance | 574 | 630 | 574 | 630 | 660
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 574 | 630 | 574 | 630 | 660
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 873 | 0 | 873 | 318
Collectively evaluated for impairment | 61,782 | 63,568 | 61,782 | 63,568 | 67,040
Residential [Member] | Real Estate [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 5,234 | 5,662 | 5,688 | 6,027 | 6,027
Provision charged to expense | (566) | 276 | (625) | 1 | 189
Losses charged off | (136) | (158) | (550) | (321) | (615)
Recoveries | 7 | 6 | 26 | 79 | 87
Ending balance | 4,539 | 5,786 | 4,539 | 5,786 | 5,688
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 4,539 | 5,786 | 4,539 | 5,786 | 5,688
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 1,878 | 1,196 | 1,878 | 1,196 | 1,564
Collectively evaluated for impairment | 720,144 | 711,041 | 720,144 | 711,041 | 708,006
Residential [Member] | Home Equity [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 866 | 747 | 857 | 774 | 774
Provision charged to expense | (9) | 113 | 18 | 87 | 257
Losses charged off | (19) | (53) | (38) | (57) | (178)
Recoveries | 4 | 0 | 5 | 3 | 4
Ending balance | 842 | 807 | 842 | 807 | 857
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 842 | 807 | 842 | 807 | 857
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 103,805 | 96,755 | 103,805 | 96,755 | 99,356
Consumer [Member] | Consumer Direct [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 1,910 | 1,866 | 1,863 | 1,885 | 1,885
Provision charged to expense | 59 | 47 | 402 | 243 | 418
Losses charged off | (196) | (166) | (687) | (675) | (965)
Recoveries | 133 | 110 | 328 | 404 | 525
Ending balance | 1,906 | 1,857 | 1,906 | 1,857 | 1,863
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 1,906 | 1,857 | 1,906 | 1,857 | 1,863
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 146,002 | 137,657 | 146,002 | 137,657 | 137,754
Consumer [Member] | Consumer Indirect [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 7,091 | 7,283 | 6,831 | 6,845 | 6,845
Provision charged to expense | 1,671 | 5 | 3,600 | 1,739 | 2,862
Losses charged off | (1,496) | (1,262) | (5,013) | (3,898) | (5,386)
Recoveries | 589 | 530 | 2,437 | 1,870 | 2,510
Ending balance | 7,855 | 6,556 | 7,855 | 6,556 | 6,831
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 7,855 | 6,556 | 7,855 | 6,556 | 6,831
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | $ 530,542 | $ 487,818 | $ 530,542 | $ 487,818 | $ 489,667

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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