SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Summary of securities sold under agreements to repurchase [Abstract]
Excess collateral held	$ (2,000)	$ (1,798)
Gross amount of recognized liabilities for repurchase agreements	10,000	10,000
Mortgage-backed securities, residential
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	12,000	11,798
Overnight and Continuous
Summary of securities sold under agreements to repurchase [Abstract]
Excess collateral held	0	0
Gross amount of recognized liabilities for repurchase agreements	0	0
Overnight and Continuous | Mortgage-backed securities, residential
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	0	0
Up to 1 Year
Summary of securities sold under agreements to repurchase [Abstract]
Excess collateral held	(2,000)	(1,798)
Gross amount of recognized liabilities for repurchase agreements	10,000	10,000
Up to 1 Year | Mortgage-backed securities, residential
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	12,000	11,798
1 - 3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Excess collateral held	0	0
Gross amount of recognized liabilities for repurchase agreements	0	0
1 - 3 Years | Mortgage-backed securities, residential
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	0	0
3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Excess collateral held	0	0
Gross amount of recognized liabilities for repurchase agreements	0	0
3 Years | Mortgage-backed securities, residential
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	$ 0	$ 0