Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Gross Unrealized Losses and Fair Value of Securities) (Details)

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SECURITIES (Gross Unrealized Losses and Fair Value of Securities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]    
More than 12 months, Fair Value   $ 1,100
More than 12 months, Unrealized Losses   (31)
Obligations of States and Political Subdivisions    
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 months, Fair Value $ 213,882 18,896
Less than 12 months, Unrealized Losses (2,648) (139)
More than 12 months, Fair Value 0 1,084
More than 12 months, Unrealized Losses 0 (31)
Total, Fair Value 213,882 19,980
Total, Unrealized Losses $ (2,648) $ (170)