SHORT-TERM BORROWINGS AND LONG-TERM DEBT (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
LONG-TERM DEBT
Long term borrowings	$ 92,785,000us-gaap_LongTermDebt		$ 92,785,000us-gaap_LongTermDebt
Short-term borrowings	70,000,000us-gaap_ShortTermBorrowings		38,000,000us-gaap_ShortTermBorrowings
Investment securities pledged as collateral	944,400,000		900,500,000
Deferred accrued interest paid	1,599,000us-gaap_InterestPaid	1,654,000us-gaap_InterestPaid
Federal Home Loan Bank Borrowings
LONG-TERM DEBT
Line of Credit, maximum borrowing capacity	965,400,000
Additional unused borrowings available	895,400,000
Long term borrowings	0		0
Short-term borrowings	70,000,000		38,000,000
Investment securities pledged as collateral	800,000
Commercial real estate and commercial loans pledged as collateral	1,500,000,000
Federal Reserve discount window line of credit
LONG-TERM DEBT
Additional unused borrowings available	34,000,000		33,300,000
Commercial real estate and commercial loans pledged as collateral	$ 70,900,000		$ 72,900,000

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The amount of cash paid for interest during the period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The sum of the carrying amounts, as of the date of the latest financial statement presented, of loans receivable which are owned but transferred to serve as collateral for the payment of related debt obligations, primarily secured borrowings and repurchase agreements, and for which the transferees are not permitted to sell or re-pledge them to an unrelated party.

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The carrying amount as of the date of the latest financial statement presented of mortgage-related securities classified as available for sale or held for investment which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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