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Off-Balance Sheet Transactions and Guarantees (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011
Off-balance sheet risks [Line Items] |  |
Total off-balance sheet financial instruments | $ 427,500,000 | $ 425,937,000
Percentage of secured standby letters of credit (in hundredths) | 87.00% |
Secured standby letter of credit | 30,300,000 |
Fixed rate loan commitments amount | 19,900,000 |
Period of commitment to sell the loans at specified prices | 60 days |
Total mortgage loans in process | 2,600,000 | 5,100,000
Mortgage loans held for sale | 22,500,000 | 500,000
Minimum [Member] |  |
Off-balance sheet risks [Line Items] |  |
Interest rate on loan commitments (in hundredths) | 4.50% |
Fixed rate loan commitments term | 6 months |
Maximum [Member] |  |
Off-balance sheet risks [Line Items] |  |
Interest rate on loan commitments (in hundredths) | 5.50% |
Fixed rate loan commitments term | 1 year |
Standby Letters of Credit [Member] |  |
Off-balance sheet risks [Line Items] |  |
Total off-balance sheet financial instruments | 41,207,000 | 50,201,000
Credit loss reserve | 5,000 |
Commitments to Extend Credit [Member] |  |
Off-balance sheet risks [Line Items] |  |
Total off-balance sheet financial instruments | 386,293,000 | 375,736,000
Credit loss reserve | $ 193,000 |

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- Definition This line item represents the term of fixed rate loan commitments agreed by the entity for the period. + References No definition available. + Details
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- Definition This line item represents the percentage of secured standby letters of credit out of total standby letters of credit. + References No definition available. + Details
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- Definition The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
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- Definition Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph g -Chapter V -Subsection I -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. + Details
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