OTHER REAL ESTATE OWNED - Summary of Activity in Purchased Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Real Estate Owned
Other	$ 0	$ (75)
Purchased Other Real Estate Owned
Real Estate Owned
January 1	9,535	9,011
Loans transferred to other real estate owned	2,523	457
Portion of gains (losses) on sale and write-downs payable to (receivable from) the FDIC under loss-sharing agreements	(31)	0
Net gains (losses) on sale and write-downs recorded in statement of income	91	(134)
Sales proceeds	(1,242)	(2,611)
Other	(19)	0
Ending balance	$ 10,857	$ 6,723