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LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details) (USD $)
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3 Months Ended | 6 Months Ended | 12 Months Ended | ||
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Jun. 30, 2013
loan
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Jun. 30, 2012
loan
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Jun. 30, 2013
loan
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Jun. 30, 2012
loan
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Dec. 31, 2012
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | $ 3,000,855,000 | $ 2,887,790,000 | $ 3,000,855,000 | $ 2,887,790,000 | $ 2,966,847,000 |
| Loans and interest accrued 90 days past due | 6,291,000 | 10,800,000 | 6,291,000 | 10,800,000 | 8,843,000 |
| Individually evaluated for impairment | 2,080,000 | 5,911,000 | |||
| Restructured loans that defaulted in the current period | 43,000 | 928,000 | 43,000 | 1,400,000 | |
| Period for restructured loan to be considered default | 90 days | ||||
| Impaired Financing Receivable, Recorded Investment | 122,398,000 | 122,398,000 | 142,415,000 | ||
| Recorded Investment | 122,398,000 | 122,398,000 | 142,415,000 | ||
| Loans considered to be trouble debt restructurings | 53,036,000 | 53,036,000 | 63,459,000 | ||
| Number of restructured loans | 1 | 2 | 1 | 3 | |
| Nonaccrual loans excluded from impaired loan | 0 | 0 | 0 | 0 | |
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Nonaccrual Loans [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 27,000,000 | 39,200,000 | 27,000,000 | 39,200,000 | 26,200,000 |
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Impaired Loans [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 133,800,000 | 133,800,000 | 155,400,000 | ||
| Collectively evaluated for impairment | 11,400,000 | 11,400,000 | 13,000,000 | ||
| Impaired Financing Receivable, Recorded Investment | 122,400,000 | 122,400,000 | 142,400,000 | ||
| Recorded Investment | $ 122,400,000 | $ 122,400,000 | $ 142,400,000 | ||
| X | ||||||||||
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- Definition
Financing receivable modifications recorded investment default during period. No definition available.
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| X | ||||||||||
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- Definition
Impaired loans collectively evaluated. No definition available.
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| X | ||||||||||
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- Definition
Non accrual loans excluded from impaired loans. No definition available.
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| X | ||||||||||
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- Definition
Number of financing receivable modifications defaulted during period. No definition available.
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| X | ||||||||||
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- Definition
Period for restructured loan to be considered default No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Recorded investment in financing receivables that are 90 days or more past due and still accruing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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