FAIR VALUE MEASUREMENTS (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Financial Assets
Trading security	$ 14,970us-gaap_TradingSecurities	$ 14,909us-gaap_TradingSecurities
Securities available for sale	1,099,656us-gaap_AvailableForSaleSecurities	1,091,818us-gaap_AvailableForSaleSecurities
Securities held to maturity	44,744	44,997
FHLB bank stock and restricted securities	58,734	55,720
Financial Liabilities
Derivative liabilities	25,546	18,282
Methods and assumptions used to estimate the fair value of significant classes of financial instruments
Junior subordinated debentures re-price period	90 days
Level 1
Financial Assets
Cash and cash equivalents	62,214	71,754
Securities available for sale	43,690	5,806
Financial Liabilities
Derivative liabilities	295	417
Level 2
Financial Assets
Securities available for sale	1,055,247	1,035,686
FHLB bank stock and restricted securities	58,734	55,720
Loans held for sale	29,305	19,493
Accrued interest receivable	17,786	17,274
Cash surrender value of bank-owned life insurance policies	105,302	104,588
Derivative assets	15,444	12,328
Assets held for sale	1,266	1,280
Financial Liabilities
Total deposits	4,720,914	4,655,234
Short-term debt	894,675	900,983
Long-term Federal Home Loan Bank advances	63,273	63,283
Subordinated borrowings	94,062	93,441
Derivative liabilities	25,504	18,259
Level 3
Financial Assets
Trading security	14,970	14,909
Securities available for sale	719	2,326
Securities held to maturity	44,744	44,997
Net loans	4,736,177	4,695,256
Derivative assets	977	625
Financial Liabilities
Derivative liabilities	93	93
Carrying Amount
Financial Assets
Cash and cash equivalents	62,214	71,754
Trading security	14,970	14,909
Securities available for sale	1,099,656	1,091,818
Securities held to maturity	42,818	43,347
FHLB bank stock and restricted securities	58,734	55,720
Net loans	4,692,377	4,644,938
Loans held for sale	29,305	19,493
Accrued interest receivable	17,786	17,274
Cash surrender value of bank-owned life insurance policies	105,302	104,588
Derivative assets	16,421	12,953
Assets held for sale	1,266	1,280
Financial Liabilities
Total deposits	4,719,683	4,654,679
Short-term debt	894,500	900,900
Long-term Federal Home Loan Bank advances	61,618	61,676
Subordinated borrowings	89,765	89,747
Derivative liabilities	25,892	18,769
Total Fair Value
Financial Assets
Cash and cash equivalents	62,214	71,754
Trading security	14,970	14,909
Securities available for sale	1,099,656	1,091,818
Securities held to maturity	44,744	44,997
FHLB bank stock and restricted securities	58,734	55,720
Net loans	4,736,177	4,695,256
Loans held for sale	29,305	19,493
Accrued interest receivable	17,786	17,274
Cash surrender value of bank-owned life insurance policies	105,302	104,588
Derivative assets	16,421	12,953
Assets held for sale	1,266	1,280
Financial Liabilities
Total deposits	4,720,914	4,655,234
Short-term debt	894,675	900,983
Long-term Federal Home Loan Bank advances	63,273	63,283
Subordinated borrowings	94,062	93,441
Derivative liabilities	$ 25,892	$ 18,769

This element represent as Federal Home Loan Bank Stock And Other Restricted Securities.

No definition available.

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- Definition

Represents the re-price period of junior subordinated debentures.

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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No definition available.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Fair value of investments in debt securities classified as held-to-maturity.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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No definition available.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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