SECURITIES AVAILABLE FOR SALE - UNREALIZED LOSSES (Details) $ in Thousands	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($)
Securities with unrealized losses
Less than 12 Months, Fair Value	$ 67,294	$ 29,177
Less than 12 Months, Unrealized Loss	(325)	(359)
12 Months or More, Fair Value	37,765	208,935
12 Months or More, Unrealized Loss	(398)	(5,277)
Total, Fair Value	105,059	238,112
Total, Unrealized Loss	(723)	(5,636)
U.S. treasury notes
Securities with unrealized losses
12 Months or More, Fair Value		3,975
12 Months or More, Unrealized Loss		(57)
Total, Fair Value		3,975
Total, Unrealized Loss		(57)
U.S. government agencies
Securities with unrealized losses
Less than 12 Months, Fair Value	6,171
Less than 12 Months, Unrealized Loss	(18)
12 Months or More, Fair Value	4,396	21,102
12 Months or More, Unrealized Loss	(23)	(459)
Total, Fair Value	10,567	21,102
Total, Unrealized Loss	$ (41)	(459)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | item	8
Amortized cost (as a percent)	0.50%
States and political subdivisions
Securities with unrealized losses
Less than 12 Months, Fair Value	$ 859	8,007
Less than 12 Months, Unrealized Loss	(3)	(125)
12 Months or More, Fair Value	1,199	25,540
12 Months or More, Unrealized Loss	(19)	(370)
Total, Fair Value	2,058	33,547
Total, Unrealized Loss	$ (22)	(495)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | item	5
Amortized cost (as a percent)	1.10%
Mortgage-backed - residential
Securities with unrealized losses
Less than 12 Months, Fair Value	$ 32,718	19,250
Less than 12 Months, Unrealized Loss	(129)	(144)
12 Months or More, Fair Value	14,583	112,369
12 Months or More, Unrealized Loss	(143)	(3,470)
Total, Fair Value	47,301	131,619
Total, Unrealized Loss	$ (272)	(3,614)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | item	32
Amortized cost (as a percent)	0.60%
Mortgage-backed - commercial
Securities with unrealized losses
Less than 12 Months, Fair Value	$ 5,760
Less than 12 Months, Unrealized Loss	(25)
12 Months or More, Fair Value	10,625	45,949
12 Months or More, Unrealized Loss	(122)	(921)
Total, Fair Value	16,385	45,949
Total, Unrealized Loss	$ (147)	(921)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | item	8
Amortized cost (as a percent)	0.90%
Asset-backed
Securities with unrealized losses
Less than 12 Months, Fair Value	$ 21,786	1,920
Less than 12 Months, Unrealized Loss	(150)	(90)
12 Months or More, Fair Value	6,962
12 Months or More, Unrealized Loss	(91)
Total, Fair Value	28,748	1,920
Total, Unrealized Loss	$ (241)	$ (90)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | item	13
Amortized cost (as a percent)	0.80%