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Allowance for Loan and Lease Losses (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 33,601 | $ 33,134 | $ 33,245 | $ 33,171 | $ 33,171
Provision charged to expense | 2,129 | 2,919 | 7,349 | 6,504 | 9,450
Losses charged off | 2,519 | 3,664 | 8,822 | 8,997 | 12,590
Recoveries | 802 | 800 | 2,241 | 2,511 | 3,214
Ending balance | 34,013 | 33,189 | 34,013 | 33,189 | 33,245
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 3,280 | 3,574 | 3,280 | 3,574 | 3,248
Collectively evaluated for impairment | 30,733 | 29,615 | 30,733 | 29,615 | 29,997
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 63,292 | 60,891 | 63,292 | 60,891 | 62,498
Collectively evaluated for impairment | 2,553,073 | 2,490,646 | 2,553,073 | 2,490,646 | 2,488,075
Commercial Construction [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 3,835 | 3,931 | 4,033 | 4,023 | 4,023
Provision charged to expense | (101) | 1,249 | 806 | 1,500 | 1,009
Losses charged off | 0 | 787 | 1,112 | 1,262 | 1,034
Recoveries | 151 | 67 | 158 | 199 | 35
Ending balance | 3,885 | 4,460 | 3,885 | 4,460 | 4,033
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 1,827 | 2,321 | 1,827 | 2,321 | 1,820
Collectively evaluated for impairment | 2,058 | 2,139 | 2,058 | 2,139 | 2,213
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 10,143 | 10,102 | 10,143 | 10,102 | 9,395
Collectively evaluated for impairment | 97,797 | 104,989 | 97,797 | 104,989 | 110,052
Commercial Secured by Real Estate [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 14,162 | 13,262 | 13,541 | 11,753 | 11,753
Provision charged to expense | 448 | 698 | 2,064 | 3,148 | 3,520
Losses charged off | 477 | 658 | 1,495 | 1,645 | 2,035
Recoveries | 13 | 87 | 36 | 133 | 303
Ending balance | 14,146 | 13,389 | 14,146 | 13,389 | 13,541
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 1,295 | 938 | 1,295 | 938 | 1,090
Collectively evaluated for impairment | 12,851 | 12,451 | 12,851 | 12,451 | 12,451
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 36,477 | 37,505 | 36,477 | 37,505 | 38,113
Collectively evaluated for impairment | 841,458 | 783,420 | 841,458 | 783,420 | 769,100
Equipment Lease Financing [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 117 | 142 | 126 | 112 | 112
Provision charged to expense | 3 | (5) | (6) | 25 | 14
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Ending balance | 120 | 137 | 120 | 137 | 126
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 120 | 137 | 120 | 137 | 126
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 9,380 | 10,167 | 9,380 | 10,167 | 9,246
Commercial Other [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 4,793 | 5,487 | 5,469 | 5,608 | 5,608
Provision charged to expense | 551 | 529 | 937 | 1,454 | 2,330
Losses charged off | 464 | 766 | 1,768 | 2,161 | 3,233
Recoveries | 102 | 184 | 344 | 533 | 764
Ending balance | 4,982 | 5,434 | 4,982 | 5,434 | 5,469
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 158 | 315 | 158 | 315 | 338
Collectively evaluated for impairment | 4,824 | 5,119 | 4,824 | 5,119 | 5,131
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 15,644 | 12,618 | 15,644 | 12,618 | 14,295
Collectively evaluated for impairment | 360,842 | 366,690 | 360,842 | 366,690 | 362,053
Real Estate Construction [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 368 | 390 | 376 | 354 | 354
Provision charged to expense | 59 | (8) | 89 | 189 | 183
Losses charged off | 49 | 18 | 87 | 189 | 189
Recoveries | 4 | 3 | 4 | 13 | 28
Ending balance | 382 | 367 | 382 | 367 | 376
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 382 | 367 | 382 | 367 | 376
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 53,545 | 54,431 | 53,545 | 54,431 | 55,041
Real Estate Mortgage [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 4,950 | 4,472 | 4,767 | 4,302 | 4,302
Provision charged to expense | 202 | 407 | 648 | 892 | 1,437
Losses charged off | 216 | 411 | 498 | 833 | 1,123
Recoveries | 11 | 17 | 30 | 124 | 151
Ending balance | 4,947 | 4,485 | 4,947 | 4,485 | 4,767
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 4,947 | 4,485 | 4,947 | 4,485 | 4,767
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 1,028 | 666 | 1,028 | 666 | 695
Collectively evaluated for impairment | 692,781 | 663,663 | 692,781 | 663,663 | 696,233
Home Equity [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 576 | 574 | 563 | 562 | 562
Provision charged to expense | 73 | 26 | 250 | 119 | 238
Losses charged off | 62 | 41 | 235 | 123 | 248
Recoveries | 1 | 0 | 10 | 1 | 11
Ending balance | 588 | 559 | 588 | 559 | 563
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 588 | 559 | 588 | 559 | 563
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 82,498 | 82,724 | 82,498 | 82,724 | 82,292
Consumer Direct [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 1,134 | 857 | 1,102 | 917 | 917
Provision charged to expense | 272 | (19) | 611 | (67) | 892
Losses charged off | 336 | 173 | 927 | 522 | 1,245
Recoveries | 105 | 122 | 389 | 459 | 538
Ending balance | 1,175 | 787 | 1,175 | 787 | 1,102
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 1,175 | 787 | 1,175 | 787 | 1,102
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 123,960 | 126,005 | 123,960 | 126,005 | 122,581
Consumer Indirect [Member] |  |  |  |  |
Allowance for loan losses [Roll Forward] |  |  |  |  |
Beginning balance | 3,666 | 4,019 | 3,268 | 5,540 | 5,540
Provision charged to expense | 622 | 42 | 1,950 | (756) | (173)
Losses charged off | 915 | 810 | 2,700 | 2,262 | 3,483
Recoveries | 415 | 320 | 1,270 | 1,049 | 1,384
Ending balance | 3,788 | 3,571 | 3,788 | 3,571 | 3,268
Allowance for Loan Losses Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 3,788 | 3,571 | 3,788 | 3,571 | 3,268
Loans Ending balance: [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | $ 290,812 | $ 298,557 | $ 290,812 | $ 298,557 | $ 281,477

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually 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=7512638&loc=SL6953423-111524 + Details
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- Definition The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 168, 169, 170 -IssueDate 2006-05-01 -Chapter 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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