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Loans and Allowance for Loan Losses (Details Textual) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 Securities Loans | Mar. 31, 2012 Loans | Dec. 31, 2012
Loans and Allowance for Loan Losses (Textual) [Abstract] |  |  |
Nonaccrual consumer loans outstanding | $ 795,793,000 |  | $ 807,795,000
Loans and Allowance for Loan Losses (Additional Textual) [Abstract] |  |  |
Loans carrying value pledged as collateral | 422,524,000 |  |
Individually evaluated for impairment | 4,092,000 |  | 4,020,000
Impaired loans | 38,622,000 |  | 39,363,000
Individually evaluated for impairment | 38,463,000 |  | 39,189,000
Impaired loans with no related allocation | 12,892,000 |  | 14,733,000
Percentage of impaired loans with no related allocation | 33.00% |  | 37.00%
Interest income recognized on impaired loans accrual status | 108,000 | 100,000 |
Contractual interest due on loans in non-accrual basis | 350,000 | 626,000 |
Interest income recognized on loans in non-accrual basis | 108,000 | 100,000 |
Borrowers delinquent once payments | 30 days |  |
Period for payment of principal or interest | 90 days |  |
Loans classified as troubled debt restructurings | 22,314,000 |  | 22,363,000
Troubled debt restructurings on non-accrual status | 14,341,000 |  | 14,081,000
Troubled debt restructurings on accrual status | 7,973,000 |  | 8,282,000
Reserves allocated to allowance for loan losses | 1,718,000 |  | 1,544,000
Borrower's payment according to the modified terms | 90 days |  |
Loans meeting the TDR criteria | 1 |  |
Number of defaulted loans modified as a TDR | 0 | 0 |
Consumer [Member] |  |  |
Loans and Allowance for Loan Losses (Textual) [Abstract] |  |  |
Nonaccrual consumer loans outstanding | $ 159,000 | $ 174,000 |

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- Definition Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5086-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 140 -Paragraph 15 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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