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FAIR VALUE MEASUREMENTS (Details 5) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Financial Assets
Trading security	$ 14,745	$ 14,840
Securities available for sale	1,058,965	760,048
Securities held to maturity	43,771	45,764
Financial Liabilities
Derivative liabilities	11,610	13,877
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	58,624	75,539
Securities available for sale	49,375	20,891
Derivative assets		242
Financial Liabilities
Derivative liabilities	103
Level 2
Financial Assets
Securities available for sale	1,007,294	737,193
Restricted equity securities	54,646	50,282
Loans held for sale	29,091	15,840
Accrued interest receivable	17,102	15,072
Cash surrender value of bank-owned life insurance policies	103,749	101,530
Derivative assets	9,343	7,799
Assets held for sale	1,260	3,969
Financial Liabilities
Total deposits	4,565,618	3,848,926
Short-term debt	887,115	872,545
Long-term Federal Home Loan Bank advances	65,711	103,660
Subordinated borrowings	87,630	87,882
Derivative liabilities	11,613	11,964
Liabilities held for sale		24,834
Level 3
Financial Assets
Trading security	14,745	14,840
Securities available for sale	2,296	1,964
Securities held to maturity	43,771	45,764
Net loans	4,560,815	4,154,663
Derivative assets	383	277
Financial Liabilities
Derivative liabilities	(77)
Carrying Amount
Financial Assets
Cash and cash equivalents	58,624	75,539
Trading security	14,745	14,840
Securities available for sale	1,058,965	760,048
Securities held to maturity	42,596	44,921
Restricted equity securities	54,646	50,282
Net loans	4,517,816	4,147,200
Loans held for sale	29,091	15,840
Accrued interest receivable	17,102	15,072
Cash surrender value of bank-owned life insurance policies	103,749	101,530
Derivative assets	9,726	8,318
Assets held for sale	1,260	3,969
Financial Liabilities
Total deposits	4,563,333	3,848,529
Short-term debt	887,000	872,510
Long-term Federal Home Loan Bank advances	64,105	101,918
Subordinated borrowings	89,730	89,679
Derivative liabilities	11,639	11,964
Liabilities held for sale		24,834
Fair Value
Financial Assets
Cash and cash equivalents	58,624	75,539
Trading security	14,745	14,840
Securities available for sale	1,058,965	760,048
Securities held to maturity	43,771	45,764
Restricted equity securities	54,646	50,282
Net loans	4,560,815	4,154,663
Loans held for sale	29,091	15,840
Accrued interest receivable	17,102	15,072
Cash surrender value of bank-owned life insurance policies	103,749	101,530
Derivative assets	9,726	8,318
Assets held for sale	1,260	3,969
Financial Liabilities
Total deposits	4,565,618	3,848,926
Short-term debt	887,115	872,545
Long-term Federal Home Loan Bank advances	65,711	103,660
Subordinated borrowings	87,630	87,882
Derivative liabilities	11,639	11,964
Liabilities held for sale		$ 24,834

X

- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). Also includes other investments and securities that are not at fair value, as of the balance sheet date, and those that are not accounted for under the equity method.

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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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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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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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