SECURITIES - Additional Information (Details)	3 Months Ended
	Mar. 31, 2019 USD ($) security	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) security
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Available for sale securities carrying value pledged to secure public deposits	$ 2,400,000		$ 2,500,000
Gross gains on sales of securities available for sale	0	$ 0
Gross losses on sales of securities available for sale (less than in 2016)	0
Fair value of available-for-sale securities	65,473,000		127,208,000
Unrealized loss of available-for-sale securities	$ 927,000		$ 2,148,000
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]
Number of securities with unrealized losses, available-for-sale | security	19		18
Fair value of available-for-sale securities	$ 21,979,000		$ 21,591,000
Unrealized loss of available-for-sale securities	$ 345,000		$ 371,000
U.S. government-sponsored enterprises
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Number of securities with unrealized losses, available-for-sale | security	10		6
Fair value of available-for-sale securities	$ 21,758,000		$ 10,348,000
Unrealized loss of available-for-sale securities	$ 227,000		$ 80,000
State and political subdivisions
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Number of securities with unrealized losses, available-for-sale | security	4		34
Fair value of available-for-sale securities	$ 3,692,000		$ 35,949,000
Unrealized loss of available-for-sale securities	$ 18,000		$ 540,000
Number of securities with unrealized losses from state and political subdivisions maturity minimum number of years	10 years
Mortgage-backed securities - U.S. government-sponsored enterprises
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Number of securities with unrealized losses, available-for-sale | security	14		38
Fair value of available-for-sale securities	$ 18,044,000		$ 59,320,000
Unrealized loss of available-for-sale securities	$ 337,000		$ 1,157,000
Corporate debt
Schedule Of Available-For-Sale And Held-To-Maturity [Line Items]
Number of securities with unrealized losses, available-for-sale | security	0		0
Maturity date (typically greater than)	5 years