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, 2020
Dec. 31, 2019
AFS Securities [Abstract]    
Due in one year or less, Amortized Cost $ 27,404 $ 35,177
Due in one year or less, Estimated Fair Value 27,621 35,329
Due after one year through five years, Amortized Cost 148,289 164,605
Due after one year through five years, Estimated Fair Value 155,504 166,873
Due after five years through ten years, Amortized Cost 233,029 249,713
Due after five years through ten years, Estimated Fair Value 237,974 254,790
Due after ten years, Amortized Cost 1,521,265 1,443,932
Due after ten years, Estimated Fair Value 1,598,065 1,488,453
Total AFS securities 1,929,987 1,893,427
Total AFS securities, Estimated Fair Value 2,019,164 1,945,445
HTM Securities [Abstract]    
Due in one year or less, Carrying Value 1,007 502
Due in one year or less, Estimated Fair Value 1,028 504
Due after one year through five years, Carrying Value 9,133 10,258
Due after one year through five years, Estimated Fair Value 9,490 10,539
Due after five years through ten years, Carrying Value 1,754 1,768
Due after five years through ten years, Estimated Fair Value 1,777 1,800
Due after ten years, Carrying Value 535,667 542,616
Due after ten years, Estimated Fair Value 601,134 590,660
Total HTM Securities 547,561 555,144
Total HTM securities, Estimated Fair Value $ 613,429 $ 603,503