Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details)

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SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value $ 221,188 $ 108,580
Less than 12 months, Unrealized Losses (8,622) (819)
More than 12 Months, Fair value 7,603 2,204
More than 12 Months, Unrealized Losses (259) (356)
Fair value, Total 228,791 110,784
Unrealized Losses, Total (8,881) (1,175)
Obligations of States and Political Subdivisions [Member]
    
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value 70,559 22,397
Less than 12 months, Unrealized Losses (5,988) (283)
More than 12 Months, Fair value 618 649
More than 12 Months, Unrealized Losses (73) (42)
Fair value, Total 71,177 23,046
Unrealized Losses, Total (6,061) (325)
Mortgage Backed Securities [Member]
    
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value 147,741 86,183
Less than 12 months, Unrealized Losses (2,608) (536)
More than 12 Months, Fair value 5,255   
More than 12 Months, Unrealized Losses (45)   
Fair value, Total 152,996 86,183
Unrealized Losses, Total (2,653) (536)
Corporate Bonds and Other Securities [Member]
    
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value 2,888   
Less than 12 months, Unrealized Losses (26)   
More than 12 Months, Fair value 1,730 1,555
More than 12 Months, Unrealized Losses (141) (314)
Fair value, Total 4,618 1,555
Unrealized Losses, Total $ (167) $ (314)