SECURITIES - Schedule of Available For Sale Securities By Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Maturities of Available-for-sale Debt Securities [Abstract]
Amortized Cost, Due in one year or less	$ 4,003
Amortized Cost, Due after one year through five years	18,138
Amortized Cost, Due after five years through ten years	28,136
Amortized Cost, Due after ten years	215,525
Amortized Cost, Available for sale securities with maturities amortized cost	265,802
Amortized Cost, Mortgage-backed securities	328,762
Amortized Cost, Total debt securities	594,564	$ 591,621
Fair Value, Due in one year or less	4,013
Fair Value, Due after one year through five years	18,529
Fair Value, Due after five years through ten years	29,341
Fair Value, Due after ten years	227,446
Fair Value, Available for sale securities with maturities fair value	279,329
Fair Value, Mortgage-backed securities	333,901
Fair Value, Total debt securities	$ 613,230	$ 585,549