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Allowance for Loan Losses, Nonperforming Assets and Impaired Loans, Financing Receivables Past Due (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
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Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | $ 4,090 |  |  |
90 or More Days Past Due | 3,755 |  |  |
90 or More Days Past Due and Still Accruing | 170 | 481 |  | 1,336
Nonaccruals (Including Impaired Nonaccruals) | 13,021 | 5,204 |  | 8,071
Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 7,677 | 4,300 | [1] |
90 or More Days Past Due | 3,755 | 3,284 | [1] |
90 or More Days Past Due and Still Accruing | 170 | 481 | [1] |
Nonaccruals (Including Impaired Nonaccruals) | 5,617 | 5,204 | [1] |
Commercial and Industrial [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 31 | [1] |
90 or More Days Past Due |  | 26 | [1] |
90 or More Days Past Due and Still Accruing |  | 26 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 139 | [1] |
Real Estate Construction [Member] | Construction, Residential [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 0 |  |  |
90 or More Days Past Due | 123 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 123 |  |  |
Real Estate Construction [Member] | Construction, Other [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 31 |  |  |
90 or More Days Past Due | 89 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 3,109 |  |  |
Real Estate Construction [Member] | Construction, Other [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 31 |  |  |
90 or More Days Past Due | 89 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 89 |  |  |
Consumer Real Estate [Member] | Equity Lines [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 22 |  |  |
90 or More Days Past Due | 30 |  |  |
90 or More Days Past Due and Still Accruing | 30 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 98 |  |  |
Consumer Real Estate [Member] | Equity Lines [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Consumer Real Estate [Member] | Residential Closed end First Liens [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 1,507 |  |  |
90 or More Days Past Due | 605 |  |  |
90 or More Days Past Due and Still Accruing | 126 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 801 |  |  |
Consumer Real Estate [Member] | Residential Closed end Junior Liens [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 121 |  |  |
90 or More Days Past Due | 39 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 120 |  |  |
Consumer Real Estate [Member] | Consumer Construction [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Consumer Real Estate [Member] | Closed end Consumer Real Estate [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 1,735 | [1] |
90 or More Days Past Due |  | 658 | [1] |
90 or More Days Past Due and Still Accruing |  | 346 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 313 | [1] |
Commercial Real Estate [Member] | Multifamily Real Estate [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 671 |  |  |
90 or More Days Past Due | 261 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 4,624 |  |  |
Commercial Real Estate [Member] | Multifamily Real Estate [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 4,202 |  |  |
90 or More Days Past Due | 261 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 1,093 |  |  |
Commercial Real Estate [Member] | Commercial Real Estate, Owner Occupied [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 1,113 |  |  |
90 or More Days Past Due | 0 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 3,536 |  |  |
Commercial Real Estate [Member] | Commercial Real Estate, Owner Occupied [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 1,113 |  |  |
90 or More Days Past Due | 0 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 2,785 |  |  |
Commercial Real Estate [Member] | Commercial Real Estate, Other [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 40 |  |  |
90 or More Days Past Due | 2,089 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 0 |  |  |
Commercial Real Estate [Member] | Commercial Real Estate, Other [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 815 | [1] |
90 or More Days Past Due |  | 488 | [1] |
90 or More Days Past Due and Still Accruing |  | 63 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 1,112 | [1] |
Commercial Real Estate [Member] | College Housing [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 452 | [1] |
90 or More Days Past Due |  | 250 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 250 | [1] |
Commercial Real Estate [Member] | Convenience Stores [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Religious Organizations [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Restaurants [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Office and Retail [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Hotels [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 616 | [1] |
90 or More Days Past Due |  | 526 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 1,397 | [1] |
Commercial Real Estate [Member] | Municipalities [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Nonprofits [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Nursing Homes [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Entertainment and Sports [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | Medical Professionals [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Commercial Real Estate [Member] | General Contractors [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 103 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 703 | [1] |
Commercial Non Real Estate [Member] | Commercial and Industrial [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 291 |  |  |
90 or More Days Past Due | 505 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 561 |  |  |
Commercial Non Real Estate [Member] | Commercial and Industrial [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 347 |  |  |
90 or More Days Past Due | 505 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 505 |  |  |
Public Sector and IDA [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 0 |  |  |
90 or More Days Past Due | 0 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 0 |  |  |
Consumer Non Real Estate [Member] | Credit Cards [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 20 |  |  |
90 or More Days Past Due | 4 |  |  |
90 or More Days Past Due and Still Accruing | 4 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 0 |  |  |
Consumer Non Real Estate [Member] | Credit Cards [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 26 | [1] |
90 or More Days Past Due |  | 8 | [1] |
90 or More Days Past Due and Still Accruing |  | 8 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Consumer Non Real Estate [Member] | Automobile [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 142 |  |  |
90 or More Days Past Due | 10 |  |  |
90 or More Days Past Due and Still Accruing | 10 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 49 |  |  |
Consumer Non Real Estate [Member] | Automobile [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 142 |  |  |
90 or More Days Past Due | 10 |  |  |
90 or More Days Past Due and Still Accruing | 10 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 3 |  |  |
Consumer Non Real Estate [Member] | Other Consumer Loans [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due | 132 |  |  |
90 or More Days Past Due | 0 |  |  |
90 or More Days Past Due and Still Accruing | 0 |  |  |
Nonaccruals (Including Impaired Nonaccruals) | 0 |  |  |
Consumer Non Real Estate [Member] | Consumer General [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 270 | [1] |
90 or More Days Past Due |  | 38 | [1] |
90 or More Days Past Due and Still Accruing |  | 38 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Consumer Non Real Estate [Member] | Consumer Overdraft [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Construction Development and Other land [Member] | Commercial [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 252 | [1] |
90 or More Days Past Due |  | 0 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | 0 | [1] |
Construction Development and Other land [Member] | Residential [Member] | Scenario, Previously Reported [Member] |  |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |  |
30 To 89 Days Past Due |  | 0 | [1] |
90 or More Days Past Due |  | 1,290 | [1] |
90 or More Days Past Due and Still Accruing |  | 0 | [1] |
Nonaccruals (Including Impaired Nonaccruals) |  | $ 1,290 | [1] |
[1] | Segments and classes at December 31, 2011 are reported using the segmentation method in effect for 2011. The Company began reporting under revised segments beginning in 2012.

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- Definition Financing receivables that are less than 90 days past due but more than 29 days past due. + References No definition available. + Details
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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 + Details
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- Definition Financing receivables that are equal to or greater than 90 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 + Details
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