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Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | $ 36,094 | $ 34,447 | $ 34,008
Provision charged to expense | 7,872 | 8,650 | 8,755
Losses charged off | (11,668) | (9,870) | (11,436)
Recoveries | 3,635 | 2,867 | 3,120
Ending balance | 35,933 | 36,094 | 34,447
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 1,313 | 2,461 | 1,742
Collectively evaluated for impairment | 34,620 | 33,633 | 32,705
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 52,202 | 49,888 | 59,068
Collectively evaluated for impairment | 2,886,169 | 2,824,073 | 2,674,756
Commercial [Member] | Construction [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 2,199 | 2,896 | 3,396
Provision charged to expense | (1,035) | (707) | (513)
Losses charged off | (316) | (3) | (15)
Recoveries | 36 | 13 | 28
Ending balance | 884 | 2,199 | 2,896
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 213 | 831 | 734
Collectively evaluated for impairment | 671 | 1,368 | 2,162
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 5,609 | 6,263 | 9,627
Collectively evaluated for impairment | 61,389 | 71,757 | 112,315
Commercial [Member] | Real Estate [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 14,434 | 13,618 | 14,535
Provision charged to expense | 1,220 | 2,135 | 941
Losses charged off | (1,641) | (1,379) | (2,163)
Recoveries | 178 | 60 | 305
Ending balance | 14,191 | 14,434 | 13,618
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 1,035 | 1,227 | 827
Collectively evaluated for impairment | 13,156 | 13,207 | 12,791
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 33,756 | 33,421 | 34,357
Collectively evaluated for impairment | 1,051,672 | 1,019,498 | 914,269
Commercial [Member] | Equipment Lease Financing [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 79 | 119 | 121
Provision charged to expense | (37) | (40) | (2)
Losses charged off | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Ending balance | 42 | 79 | 119
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 42 | 79 | 119
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 5,512 | 8,514 | 10,344
Commercial [Member] | Other [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 4,225 | 4,263 | 5,238
Provision charged to expense | 2,128 | 1,338 | 1,545
Losses charged off | (2,136) | (1,961) | (3,141)
Recoveries | 439 | 585 | 621
Ending balance | 4,656 | 4,225 | 4,263
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 65 | 403 | 181
Collectively evaluated for impairment | 4,591 | 3,822 | 4,082
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 11,354 | 8,460 | 13,807
Collectively evaluated for impairment | 338,805 | 350,438 | 338,241
Residential [Member] | Construction [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 550 | 534 | 397
Provision charged to expense | 264 | 147 | 258
Losses charged off | (192) | (135) | (123)
Recoveries | 7 | 4 | 2
Ending balance | 629 | 550 | 534
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 629 | 550 | 534
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 57,966 | 61,750 | 62,412
Residential [Member] | Real Estate [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 6,678 | 6,094 | 4,939
Provision charged to expense | 291 | 1,888 | 2,173
Losses charged off | (1,043) | (1,421) | (1,058)
Recoveries | 101 | 117 | 40
Ending balance | 6,027 | 6,678 | 6,094
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 6,027 | 6,678 | 6,094
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 1,483 | 1,744 | 1,277
Collectively evaluated for impairment | 701,486 | 706,130 | 711,188
Residential [Member] | Home Equity [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 839 | 756 | 601
Provision charged to expense | (20) | 158 | 265
Losses charged off | (54) | (129) | (115)
Recoveries | 9 | 54 | 5
Ending balance | 774 | 839 | 756
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 774 | 839 | 756
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 91,511 | 89,450 | 88,335
Consumer [Member] | Consumer Direct [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 1,594 | 1,574 | 1,127
Provision charged to expense | 912 | 891 | 1,207
Losses charged off | (1,236) | (1,306) | (1,326)
Recoveries | 615 | 435 | 566
Ending balance | 1,885 | 1,594 | 1,574
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 1,885 | 1,594 | 1,574
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 133,093 | 126,406 | 122,136
Consumer [Member] | Consumer Indirect [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Beginning balance | 5,496 | 4,593 | 3,654
Provision charged to expense | 4,149 | 2,840 | 2,881
Losses charged off | (5,050) | (3,536) | (3,495)
Recoveries | 2,250 | 1,599 | 1,553
Ending balance | 6,845 | 5,496 | 4,593
Allowance for loan losses ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | 6,845 | 5,496 | 4,593
Loans ending balance [Abstract] |  |  |
Individually evaluated for impairment | 0 | 0 | 0
Collectively evaluated for impairment | $ 444,735 | $ 390,130 | $ 315,516

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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