INVESTMENT SECURITIES - Summary of Amortized Cost and Fair Value - Held-To-Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Amortized Cost
Due in one year or less	$ 347
Due after one year through five years	6,427
Due after five years through ten years	32,837
Due after ten years	58,600
Amortized Cost	98,211	$ 116,792
Fair Value
Due in one year or less	347
Due after one year through five years	6,445
Due after five years through ten years	33,310
Due after ten years	58,159
Fair Value	$ 98,261	$ 117,698