INVESTMENT SECURITIES, Analysis of Gross Unrealized Losses (Details)	Jun. 30, 2021 USD ($) Security	Dec. 31, 2020 USD ($)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 272,036,000	$ 95,948,000
12 months or more, fair value	0	0
Total fair value	272,036,000	95,948,000
Less than 12 months, unrealized losses	(3,001,000)	(374,000)
12 Months or more, unrealized losses	0	0
Total unrealized losses	$ (3,001,000)	(374,000)
Investment securities in an unrealized loss position less than 12 months | Security	114
Investment securities in an unrealized loss position more than 12 months | Security	0
Investment securities pledged as collateral	$ 38,086,000	41,916,000
U.S. Treasury Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	38,466,000	4,276,000
12 months or more, fair value	0	0
Total fair value	38,466,000	4,276,000
Less than 12 months, unrealized losses	(152,000)	(1,000)
12 Months or more, unrealized losses	0	0
Total unrealized losses	(152,000)	(1,000)
Securities of U.S. Government Agencies and Corporations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	64,890,000	58,164,000
12 months or more, fair value	0	0
Total fair value	64,890,000	58,164,000
Less than 12 months, unrealized losses	(967,000)	(265,000)
12 Months or more, unrealized losses	0	0
Total unrealized losses	(967,000)	(265,000)
Obligations of States and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	6,642,000	1,603,000
12 months or more, fair value	0	0
Total fair value	6,642,000	1,603,000
Less than 12 months, unrealized losses	(118,000)	(9,000)
12 Months or more, unrealized losses	0	0
Total unrealized losses	(118,000)	(9,000)
Collateralized Mortgage Obligations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	28,160,000	1,697,000
12 months or more, fair value	0	0
Total fair value	28,160,000	1,697,000
Less than 12 months, unrealized losses	(308,000)	(8,000)
12 Months or more, unrealized losses	0	0
Total unrealized losses	(308,000)	(8,000)
Mortgage-backed Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	133,878,000	30,208,000
12 months or more, fair value	0	0
Total fair value	133,878,000	30,208,000
Less than 12 months, unrealized losses	(1,456,000)	(91,000)
12 Months or more, unrealized losses	0	0
Total unrealized losses	$ (1,456,000)	$ (91,000)