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ALLOWANCE FOR LOAN LOSSES: (Details Textual) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Allowance for loan losses |  |  |
Financing Receivable, Modifications, Recorded Investment | $ 1,600 | $ 1,600 |
Impaired loans | 33,557 | 32,626 |
Allowance for Loan Losses Allocated | 7,609 | 4,273 |
Increase in provision for decrease in FDIC indemnification asset | 2,200 | 125 | 1,700
Minimum outstanding balance of non-homogeneous loans to be individually evaluated as to credit risk | 50 |  |
Troubled Debt Restructurings Description | Modifications involving a reduction of the stated interest rate of the loan were for periods ranging from twelve months to five years. Modifications involving an extension of the maturity date were for periods ranging from twelve months to 10 years. |  |
Commercial Loan [Member] |  |  |
Allowance for loan losses |  |  |
Financing Receivable, Modifications, Recorded Investment | 5,100 | 631 |
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down | 879 |  |
Residential Loans [Member] |  |  |
Allowance for loan losses |  |  |
Financing Receivable, Modifications, Recorded Investment | 13 | 212 |
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down | 31 |  |
Installment Loans [Member] |  |  |
Allowance for loan losses |  |  |
Financing Receivable, Modifications, Recorded Investment | 864 |  |
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down | 14 |  |
Covered Loans |  |  |
Allowance for loan losses |  |  |
Loans Past Due Over 90 Day Still Accruing | 630 | 413 |
Nonaccrual | 4,300 | 5,600 |
Impaired loans | 2,900 | 5,000 |
Allowance for Loan Losses Allocated | $ 236 | $ 1,000 |

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- Definition Represents the minimum outstanding balance of loans to be individually reviewed and classified as to credit risk. Homogeneous loans (at all levels of outstanding balances) are not reviewed individually, but rather as part of a group. + References No definition available. + Details
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- Definition Provision charged for the period based on estimated losses to be realized from loan and lease transactions, based on decreases in the loss sharing Federal Deposit Insurance Corporation (FDIC) indemnification asset. + References No definition available. + Details
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- Definition It represents description about troubled debt restructurings. + 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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- 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 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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- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + 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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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
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- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
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