Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT SECURITIES (Textual) (Details)

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INVESTMENT SECURITIES (Textual) (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Investment Securities (Textual) [Abstract]    
Market value $ 350,614 $ 296,985
Net pre-tax unrealized gain on investment securities 1,063 1,654
Securities with continuous unrealized losses 120,063 50,729
Unrealized losses on securities 1,545 728
Securities with continuous unrealized losses for less than 12 months 109,067 42,687
Unrealized losses on securities less than 12 month 1,116 93
Securities with continuous unrealized losses for more than 12 months 10,996 8,042
Unrealized losses on securities 12 month or more 429 635
Investment Securities [Member]
    
Investment Securities (Textual) [Abstract]    
Market value 350,600  
Net pre-tax unrealized gain on investment securities 500  
Securities with continuous unrealized losses 120,000  
Unrealized losses on securities 1,500  
Securities with continuous unrealized losses for less than 12 months 109,100  
Unrealized losses on securities less than 12 month 1,100  
Securities with continuous unrealized losses for more than 12 months 10,600  
Unrealized losses on securities 12 month or more 29  
Securities with an amortized cost 173,700 152,300
Realized impairment loss on securities 200  
Preferred bank stock [Member]
    
Investment Securities (Textual) [Abstract]    
Securities with continuous unrealized losses, General level of interest rate was lower $ 400