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Commitments and Off-Balance Sheet Risk (Details Textual) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011
Commitments and Off-Balance Sheet Risk (Additional Textual) [Abstract] |  |
Reserve or liability balance for financial instruments with off-balance sheet risk | $ 0 |
Line of credit facilities | 1 year |
Libor rate period | 30 days |
Fixed rate range of term debt secured by real estate, Minimum | 4.00% |
Fixed rate range of term debt secured by real estate, Maximum | 7.00% |
Term debt secured by real estate balloon payment period | 5 years |
Term debt secured by non real estate collateral maturity period | 5 years |
Notional amount of the underlying interest rate swap agreements, entered into by commercial loan customers with correspondent banks | 29.7 |
Net fair value of interest rate swaps entered into by commercial loan customer's with correspondent banks | 4.1 |
Liabilities for accreted fee collected from customer | 0.1 | 0.2
Amount of federal reserve requirement | $ 1.2 | $ 0.9
Maximum [Member] |  |
Commitments and Off-Balance Sheet Risk (Textual) [Abstract] |  |
Amortization period for term debt secured by real estate | 20 years |
Interest rates on loans secured by non real estate collateral | 7.50% |
Fees accreted into income during interest rate swap agreements years | 15 years |
Minimum [Member] |  |
Commitments and Off-Balance Sheet Risk (Textual) [Abstract] |  |
Amortization period for term debt secured by real estate | 10 years |
Interest rates on loans secured by non real estate collateral | 4.00% |
Fees accreted into income during interest rate swap agreements years | 4 years |

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- Definition Amortization period for term debt secured by real estate. + References No definition available. + Details
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- Definition Fees accreted into income during interest rate swap agreements years. + References No definition available. + Details
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- Definition Interest rates on loans secured by non real estate collateral. + References No definition available. + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 + Details
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