SECURITIES - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) security	Dec. 31, 2018 USD ($) security
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Available-for-sale, restricted	$ 4,300	$ 2,500
Gross gains on sales of securities available for sale	2,100	46
Gross losses on sales of securities available for sale	393	10
Unrealized loss position, fair value	107,929	127,208
Unrealized loss position, accumulated loss	$ 1,616	$ 2,148
Number of securities with unrealized losses, held-to-maturity | security	0	0
U.S. government agencies
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Continuous unrealized loss position, number of positions | security	6	18
Unrealized loss position, fair value	$ 5,966	$ 21,591
Unrealized loss position, accumulated loss	84	$ 371
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale	$ 0
U.S. government-sponsored enterprises
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Continuous unrealized loss position, number of positions | security	26	6
Unrealized loss position, fair value	$ 53,249	$ 10,348
Unrealized loss position, accumulated loss	1,089	$ 80
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale	$ 0
State and political subdivisions
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Continuous unrealized loss position, number of positions | security	14	34
Unrealized loss position, fair value	$ 17,421	$ 35,949
Unrealized loss position, accumulated loss	225	$ 540
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale	$ 0
Maturity date term	10 years
Mortgage-backed securities - U.S. government-sponsored enterprises
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Continuous unrealized loss position, number of positions | security	13	38
Unrealized loss position, fair value	$ 22,178	$ 59,320
Unrealized loss position, accumulated loss	178	$ 1,157
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale	$ 0
Mortgage-backed securities - Private mortgage-backed securities
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Continuous unrealized loss position, number of positions | security	3	0
Unrealized loss position, fair value	$ 6,973
Unrealized loss position, accumulated loss	$ 33
Corporate debt
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Continuous unrealized loss position, number of positions	1	0
Unrealized loss position, fair value	$ 2,142
Unrealized loss position, accumulated loss	7
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale	$ 0
Maturity date term	5 years