FEDERAL HOME LOAN BANK ADVANCES - Required Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2013
Required payments over the next five years
2018	$ 80,286
2019	60,258
2020	55,496
2021	20,000
2022	50,000
Thereafter	70,000
Advances from Federal Home Loan Banks, Total	336,040
Restructuring prepayment penalty	(54)		$ (1,609)
Total required payments	$ 335,986	$ 249,658