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Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 35,189 | $ 35,713 | $ 36,151 | $ 35,933 | $ 35,933
Provision charged to expense | 1,929 | 2,764 | 2,875 | 3,993 | 7,521
Losses charged off | (2,526) | (2,189) | (5,503) | (4,680) | (11,085)
Recoveries | 1,179 | 845 | 2,248 | 1,887 | 3,782
Ending balance | 35,771 | 37,133 | 35,771 | 37,133 | 36,151
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 907 | 1,319 | 907 | 1,319 | 991
Collectively evaluated for impairment | 34,864 | 35,814 | 34,864 | 35,814 | 35,160
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 46,743 | 50,729 | 46,743 | 50,729 | 47,412
Collectively evaluated for impairment | 3,122,299 | 3,036,613 | 3,122,299 | 3,036,613 | 3,075,528
Commercial [Member] | Construction [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 686 | 644 | 686 | 884 | 884
Provision charged to expense | 51 | 22 | 37 | (220) | (237)
Losses charged off | 0 | 0 | 0 | (4) | (10)
Recoveries | 3 | 3 | 17 | 9 | 49
Ending balance | 740 | 669 | 740 | 669 | 686
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 25 | 0 | 25 | 25
Collectively evaluated for impairment | 740 | 644 | 740 | 644 | 661
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 4,299 | 4,860 | 4,299 | 4,860 | 4,584
Collectively evaluated for impairment | 76,897 | 67,194 | 76,897 | 67,194 | 71,895
Commercial [Member] | Real Estate [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 14,133 | 14,177 | 14,509 | 14,191 | 14,191
Provision charged to expense | 788 | 1,435 | 597 | 1,624 | 2,281
Losses charged off | (266) | (318) | (477) | (528) | (2,038)
Recoveries | 3 | 5 | 29 | 12 | 75
Ending balance | 14,658 | 15,299 | 14,658 | 15,299 | 14,509
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 807 | 1,227 | 807 | 1,227 | 966
Collectively evaluated for impairment | 13,851 | 14,072 | 13,851 | 14,072 | 13,543
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 31,874 | 32,240 | 31,874 | 32,240 | 31,465
Collectively evaluated for impairment | 1,159,837 | 1,146,989 | 1,159,837 | 1,146,989 | 1,157,215
Commercial [Member] | Equipment Lease Financing [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 23 | 40 | 18 | 42 | 42
Provision charged to expense | (6) | (7) | (1) | (9) | (24)
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Ending balance | 17 | 33 | 17 | 33 | 18
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 17 | 33 | 17 | 33 | 18
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 130 | 0 | 130 | 0
Collectively evaluated for impairment | 2,354 | 4,773 | 2,354 | 4,773 | 3,042
Commercial [Member] | Other [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 4,229 | 4,736 | 5,039 | 4,656 | 4,656
Provision charged to expense | 668 | 599 | 16 | 1,019 | 1,744
Losses charged off | (322) | (417) | (557) | (836) | (1,893)
Recoveries | 62 | 75 | 139 | 154 | 532
Ending balance | 4,637 | 4,993 | 4,637 | 4,993 | 5,039
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 100 | 67 | 100 | 67 | 0
Collectively evaluated for impairment | 4,537 | 4,926 | 4,537 | 4,926 | 5,039
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 8,949 | 10,850 | 8,949 | 10,850 | 9,481
Collectively evaluated for impairment | 343,461 | 341,323 | 343,461 | 341,323 | 341,553
Residential [Member] | Construction [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 633 | 571 | 660 | 629 | 629
Provision charged to expense | (11) | 10 | (14) | (48) | 31
Losses charged off | (4) | 0 | (28) | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Ending balance | 618 | 581 | 618 | 581 | 660
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 618 | 581 | 618 | 581 | 660
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 846 | 0 | 846 | 318
Collectively evaluated for impairment | 64,817 | 57,720 | 64,817 | 57,720 | 67,040
Residential [Member] | Real Estate [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 5,936 | 5,877 | 5,688 | 6,027 | 6,027
Provision charged to expense | (493) | (128) | (58) | (275) | 189
Losses charged off | (222) | (97) | (415) | (164) | (615)
Recoveries | 13 | 10 | 19 | 74 | 87
Ending balance | 5,234 | 5,662 | 5,234 | 5,662 | 5,688
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 5,234 | 5,662 | 5,234 | 5,662 | 5,688
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 1,621 | 1,803 | 1,621 | 1,803 | 1,564
Collectively evaluated for impairment | 719,075 | 706,664 | 719,075 | 706,664 | 708,006
Residential [Member] | Home Equity [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 862 | 757 | 857 | 774 | 774
Provision charged to expense | 22 | (11) | 27 | (27) | 257
Losses charged off | (18) | 0 | (19) | (3) | (178)
Recoveries | 0 | 1 | 1 | 3 | 4
Ending balance | 866 | 747 | 866 | 747 | 857
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 866 | 747 | 866 | 747 | 857
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 102,432 | 93,721 | 102,432 | 93,721 | 99,356
Consumer [Member] | Consumer Direct [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 1,798 | 1,844 | 1,863 | 1,885 | 1,885
Provision charged to expense | 264 | 102 | 343 | 196 | 418
Losses charged off | (276) | (239) | (491) | (509) | (965)
Recoveries | 124 | 159 | 195 | 294 | 525
Ending balance | 1,910 | 1,866 | 1,910 | 1,866 | 1,863
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 1,910 | 1,866 | 1,910 | 1,866 | 1,863
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 145,376 | 135,228 | 145,376 | 135,228 | 137,754
Consumer [Member] | Consumer Indirect [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 6,889 | 7,067 | 6,831 | 6,845 | 6,845
Provision charged to expense | 646 | 742 | 1,928 | 1,733 | 2,862
Losses charged off | (1,418) | (1,118) | (3,516) | (2,636) | (5,386)
Recoveries | 974 | 592 | 1,848 | 1,341 | 2,510
Ending balance | 7,091 | 7,283 | 7,091 | 7,283 | 6,831
Ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 7,091 | 7,283 | 7,091 | 7,283 | 6,831
Loans ending balance [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | $ 508,050 | $ 483,001 | $ 508,050 | $ 483,001 | $ 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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