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Loans and Allowance for Loan Losses (Details Textual) (USD $) | 12 Months Ended |
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Dec. 31, 2012 | Dec. 31, 2011
Description Of Bank's Loan Grading Process | The Bank’s loan grading process is as follows:
| § | All loans are assigned a loan grade at the time of origination by the relationship manager. Typically, a loan is assigned a loan grade of “pass” at origination.
| § | Loans relationships greater than or equal to $500 thousand are reviewed by the Bank’s external loan review provider on an annual basis.
| § | Additionally, the Bank's external loan review provider samples other loan relationships between $100 thousand and $500 thousand with an emphasis on commercial and commercial real estate loans and insider loans.
| § | The Bank’s internal loan review department samples approximately 33 percent of all loan relationships less than $500 thousand on an annual basis for review.
| § | If a loan is delinquent 60 days or more or a pattern of delinquency exists, the loan will be selected for review.
| § | Generally, all loans on the Bank’s internal watchlist are reviewed annually by internal loan review or external loan review providers.
Financing Receivable, Modifications, Recorded Investment | $ 9,403,000 | $ 5,026,000

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- Definition Description of Bnks's loan grading process. + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554 + Details
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