FAIR VALUE (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financial Assets
Total securities available-for-sale	$ 902,341	$ 876,090
U. S. government agency
Financial Assets
Total securities available-for-sale	1,638
States and municipals
Financial Assets
Total securities available-for-sale	337,939	344,877
Mortgage-backed securities - Residential - Government Sponsored Entity
Financial Assets
Total securities available-for-sale	227,055	271,504
Collateralized mortgage obligations - Government Sponsored Entity
Financial Assets
Total securities available-for-sale	327,223	250,767
Equity securities
Financial Assets
Total securities available-for-sale	4,939	5,410
Other securities
Financial Assets
Total securities available-for-sale	3,547	3,532
Recurring basis \| Carrying Value
Financial Assets
Total securities available-for-sale	902,341	876,090
Mortgage banking derivative	2,200	460
Recurring basis \| Carrying Value \| U. S. government agency
Financial Assets
Total securities available-for-sale	1,638
Recurring basis \| Carrying Value \| States and municipals
Financial Assets
Total securities available-for-sale	337,939	344,877
Recurring basis \| Carrying Value \| Mortgage-backed securities - Residential - Government Sponsored Entity
Financial Assets
Total securities available-for-sale	227,055	271,504
Recurring basis \| Carrying Value \| Collateralized mortgage obligations - Government Sponsored Entity
Financial Assets
Total securities available-for-sale	327,223	250,767
Recurring basis \| Carrying Value \| Equity securities
Financial Assets
Total securities available-for-sale	4,939	5,410
Recurring basis \| Carrying Value \| Other securities
Financial Assets
Total securities available-for-sale	3,547	3,532
Recurring basis \| Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Total securities available-for-sale	4,689	4,660
Recurring basis \| Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Equity securities
Financial Assets
Total securities available-for-sale	4,689	4,660
Recurring basis \| Fair Value \| Significant Other Observable Inputs (Level 2)
Financial Assets
Total securities available-for-sale	879,375	844,537
Recurring basis \| Fair Value \| Significant Other Observable Inputs (Level 2) \| U. S. government agency
Financial Assets
Total securities available-for-sale	1,638
Recurring basis \| Fair Value \| Significant Other Observable Inputs (Level 2) \| States and municipals
Financial Assets
Total securities available-for-sale	322,469	321,321
Recurring basis \| Fair Value \| Significant Other Observable Inputs (Level 2) \| Mortgage-backed securities - Residential - Government Sponsored Entity
Financial Assets
Total securities available-for-sale	227,055	271,504
Recurring basis \| Fair Value \| Significant Other Observable Inputs (Level 2) \| Collateralized mortgage obligations - Government Sponsored Entity
Financial Assets
Total securities available-for-sale	327,223	250,767
Recurring basis \| Fair Value \| Significant Other Observable Inputs (Level 2) \| Other securities
Financial Assets
Total securities available-for-sale	990	945
Recurring basis \| Fair Value \| Significant Unobservable Inputs (Level 3)
Financial Assets
Total securities available-for-sale	18,277	26,893
Mortgage banking derivative	2,200	460
Recurring basis \| Fair Value \| Significant Unobservable Inputs (Level 3) \| States and municipals
Financial Assets
Total securities available-for-sale	15,470	23,556
Recurring basis \| Fair Value \| Significant Unobservable Inputs (Level 3) \| Equity securities
Financial Assets
Total securities available-for-sale	250	750
Recurring basis \| Fair Value \| Significant Unobservable Inputs (Level 3) \| Other securities
Financial Assets
Total securities available-for-sale	$ 2,557	$ 2,587

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 Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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