Annual report pursuant to Section 13 and 15(d)

SECURITIES (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details)

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SECURITIES (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items]    
Held-to-maturity Securities, Total $ 201,526 $ 205,374
Held to maturity securities 202,315 209,437
Obligations of states and political subdivisions    
Schedule of Held-to-maturity Securities [Line Items]    
Held-to-maturity Securities, Total 201,526 205,374
Gross Unrealized Gains 1,617 5,748
Gross Unrealized Losses (828) (1,685)
Held to maturity securities $ 202,315 $ 209,437