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
Mar. 31, 2019
Dec. 31, 2018
Amortized Cost    
Due in one year or less $ 21,087 $ 22,653
Due after one year through five years 280,969 191,003
Due after five years through ten years 257,437 218,211
Due after ten years 1,529,358 1,349,085
Total AFS securities 2,088,851 1,780,952
Estimated Fair Value    
Due in one year or less 21,214 22,789
Due after one year through five years 281,047 188,999
Due after five years through ten years 258,813 217,304
Due after ten years 1,547,988 1,345,729
Total AFS securities 2,109,062 1,774,821
Carrying Value    
Due in one year or less 252 0
Due after one year through five years 8,212 3,893
Due after five years through ten years 4,010 3,480
Due after ten years 546,906 484,899
Total HTM securities 559,380 492,272
Estimated Fair Value    
Due in one year or less 252 0
Due after one year through five years 8,332 3,900
Due after five years through ten years 4,054 3,507
Due after ten years 571,968 492,094
Total HTM securities $ 584,606 $ 499,501