Annual report pursuant to Section 13 and 15(d)

SECURITIES (Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Values of Investment Securities) (Details)

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SECURITIES (Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Values of Investment Securities) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost $ 675,474 $ 563,518
Gross Unrealized Gains 11,701 23,039
Gross Unrealized (Losses) (9,827) (1,175)
Total securities available for sale, Estimated Fair Value 677,348 585,382
US Government Agencies Debt Securities [Member]
    
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 1,654 2,581
Gross Unrealized Gains 499 268
Gross Unrealized (Losses)      
Total securities available for sale, Estimated Fair Value 2,153 2,849
Obligations of States and Political Subdivisions [Member]
    
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 255,335 214,980
Gross Unrealized Gains 6,107 15,123
Gross Unrealized (Losses) (6,612) (325)
Total securities available for sale, Estimated Fair Value 254,830 229,778
Corporate and Other Bonds [Member]
    
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 9,479 7,353
Gross Unrealized Gains 115 173
Gross Unrealized (Losses) (160) (314)
Total securities available for sale, Estimated Fair Value 9,434 7,212
Mortgage Backed Securities [Member]
    
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 405,389 335,327
Gross Unrealized Gains 4,954 7,383
Gross Unrealized (Losses) (2,981) (536)
Total securities available for sale, Estimated Fair Value 407,362 342,174
Other Securities [Member]
    
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 3,617 3,277
Gross Unrealized Gains 26 92
Gross Unrealized (Losses) (74)   
Total securities available for sale, Estimated Fair Value $ 3,569 $ 3,369