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Allowance for Loan Losses, Nonperforming Assets and Impaired Loans, Financing Receivables Past Due (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2012
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Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | $ 4,295 | $ 4,090 |
90 or More Days Past Due | 4,445 | 3,755 |
90 or More Days Past Due and Still Accruing | 568 | 170 | 210
Nonaccruals (Including Impaired Nonaccruals) | 12,425 | 13,021 | 5,328
Real Estate Construction [Member] | Construction, Residential [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 0 | 0 |
90 or More Days Past Due | 123 | 123 |
90 or More Days Past Due and Still Accruing | 0 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 123 | 123 |
Real Estate Construction [Member] | Construction, Other [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 30 | 31 |
90 or More Days Past Due | 0 | 89 |
90 or More Days Past Due and Still Accruing | 0 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 2,869 | 3,109 |
Consumer Real Estate [Member] | Equity Lines [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 22 | 22 |
90 or More Days Past Due | 49 | 30 |
90 or More Days Past Due and Still Accruing | 49 | 30 |
Nonaccruals (Including Impaired Nonaccruals) | 0 | 98 |
Consumer Real Estate [Member] | Residential Closed end First Liens [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 1,236 | 1,507 |
90 or More Days Past Due | 731 | 605 |
90 or More Days Past Due and Still Accruing | 414 | 126 |
Nonaccruals (Including Impaired Nonaccruals) | 626 | 801 |
Consumer Real Estate [Member] | Residential Closed end Junior Liens [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 336 | 121 |
90 or More Days Past Due | 170 | 39 |
90 or More Days Past Due and Still Accruing | 51 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 119 | 120 |
Consumer Real Estate [Member] | Investor-owned residential real estate [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 196 |  |
90 or More Days Past Due | 0 |  |
90 or More Days Past Due and Still Accruing | 0 |  |
Nonaccruals (Including Impaired Nonaccruals) | 3 |  |
Commercial Real Estate [Member] | Multifamily Real Estate [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 943 | 671 |
90 or More Days Past Due | 254 | 261 |
90 or More Days Past Due and Still Accruing | 0 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 4,421 | 4,624 |
Commercial Real Estate [Member] | Commercial Real Estate, Owner Occupied [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 670 | 1,113 |
90 or More Days Past Due | 2,806 | 0 |
90 or More Days Past Due and Still Accruing | 0 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 3,810 | 3,536 |
Commercial Real Estate [Member] | Commercial Real Estate, Other [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 256 | 40 |
90 or More Days Past Due | 0 | 2,089 |
90 or More Days Past Due and Still Accruing | 0 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 0 | 0 |
Commercial Non Real Estate [Member] | Commercial and Industrial [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 265 | 291 |
90 or More Days Past Due | 258 | 505 |
90 or More Days Past Due and Still Accruing | 0 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 411 | 561 |
Public Sector and IDA [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 0 | 0 |
90 or More Days Past Due | 0 | 0 |
90 or More Days Past Due and Still Accruing | 0 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | 0 | 0 |
Consumer Non Real Estate [Member] | Credit Cards [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 24 | 20 |
90 or More Days Past Due | 6 | 4 |
90 or More Days Past Due and Still Accruing | 6 | 4 |
Nonaccruals (Including Impaired Nonaccruals) | 0 | 0 |
Consumer Non Real Estate [Member] | Automobile [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 185 | 142 |
90 or More Days Past Due | 42 | 10 |
90 or More Days Past Due and Still Accruing | 42 | 10 |
Nonaccruals (Including Impaired Nonaccruals) | 43 | 49 |
Consumer Non Real Estate [Member] | Other Consumer Loans [Member] |  |  |
Financing receivable recorded investment, past due [Abstract] |  |  |
30 To 89 Days Past Due | 132 | 132 |
90 or More Days Past Due | 6 | 0 |
90 or More Days Past Due and Still Accruing | 6 | 0 |
Nonaccruals (Including Impaired Nonaccruals) | $ 0 | $ 0 |

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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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