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
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2016
Dec. 31, 2015
Amortized Cost      
Due in one year or less   $ 11,376 $ 8,380
Due after one year through five years   101,658 65,326
Due after five years through ten years   318,124 296,864
Due after ten years   496,280 520,706
Total securities available for sale   927,438 891,276
Estimated Fair Value      
Due in one year or less   11,512 8,370
Due after one year through five years   104,839 66,996
Due after five years through ten years   326,477 301,920
Due after ten years   506,835 526,006
Total securities available for sale   949,663 903,292
Carrying Value      
Due in one year or less   857 1,488
Due after one year through five years   18,122 4,294
Due after five years through ten years   45,802 44,736
Due after ten years   138,136 154,856
Total securities held to maturity   202,917 205,374
Estimated Fair Value      
Due in one year or less   857 1,491
Due after one year through five years   18,564 4,348
Due after five years through ten years   47,469 45,501
Due after ten years   145,059 158,097
Total securities held to maturity   211,949 $ 209,437
Held to maturity securities unrealized gains before tax $ 8,100 $ 5,900