Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details)

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SECURITIES (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Amortized Cost    
Due in one year or less $ 23,527 $ 21,403
Due after one year through five years 120,077 108,198
Due after five years through ten years 276,269 300,552
Due after ten years 528,766 517,444
Total securities available for sale 948,639 947,597
Estimated Fair Value    
Due in one year or less 23,610 21,517
Due after one year through five years 122,479 109,778
Due after five years through ten years 281,588 301,888
Due after ten years 532,860 513,581
Total securities available for sale 960,537 946,764
Carrying Value    
Due in one year or less 4,797 4,403
Due after one year through five years 34,383 28,383
Due after five years through ten years 63,538 51,730
Due after ten years 102,912 117,010
Total securities held to maturity 205,630 201,526
Estimated Fair Value    
Due in one year or less 4,826 4,440
Due after one year through five years 35,020 28,763
Due after five years through ten years 65,281 51,522
Due after ten years 106,319 117,590
Total securities held to maturity $ 211,446 $ 202,315