INVESTMENT SECURITIES - Securities with Gross Unrealized Losses (Details)	6 Months Ended
	Jun. 30, 2022 USD ($) security	Dec. 31, 2021 USD ($) security
Securities Held-to-Maturity, Fair Value
Less than 12 months	$ 3,066,000	$ 1,940,000
Over 12 months	8,436,000	7,685,000
Fair value	11,502,000	9,625,000
Securities Held-to-Maturity, Gross Unrealized Losses
Less than 12 months	(420,000)	(61,000)
Over 12 months	(1,564,000)	(314,000)
Gross unrealized losses	(1,984,000)	(375,000)
Securities Available-for-Sale, Fair Value
Less than 12 months	70,265,000	77,392,000
Over 12 months	9,836,000	4,958,000
Fair value	80,101,000	82,350,000
Securities Available-for-Sale, Gross Unrealized Losses
Less than 12 months	(6,852,000)	(794,000)
Over 12 months	(1,572,000)	(158,000)
Gross unrealized losses	(8,424,000)	(952,000)
Total, Fair Value
Less than 12 months	73,331,000	79,332,000
Over 12 months	18,272,000	12,643,000
Fair value	91,603,000	91,975,000
Total, Gross Unrealized Losses
Less than 12 months	(7,272,000)	(855,000)
Over 12 months	(3,136,000)	(472,000)
Gross unrealized losses	$ (10,408,000)	$ (1,327,000)
Number of securities in unrealized loss position | security	90	67
Other-than-temporary impairment	$ 0
Mortgage-backed
Securities Available-for-Sale, Fair Value
Less than 12 months	58,861,000	$ 68,412,000
Over 12 months	7,129,000	1,889,000
Fair value	65,990,000	70,301,000
Securities Available-for-Sale, Gross Unrealized Losses
Less than 12 months	(5,993,000)	(746,000)
Over 12 months	(1,115,000)	(52,000)
Gross unrealized losses	(7,108,000)	(798,000)
U.S. Government and agency obligations
Securities Held-to-Maturity, Fair Value
Less than 12 months	2,623,000	1,940,000
Over 12 months	8,436,000	7,685,000
Fair value	11,059,000	9,625,000
Securities Held-to-Maturity, Gross Unrealized Losses
Less than 12 months	(389,000)	(61,000)
Over 12 months	(1,564,000)	(314,000)
Gross unrealized losses	(1,953,000)	(375,000)
Securities Available-for-Sale, Fair Value
Less than 12 months	8,505,000	5,697,000
Over 12 months	1,684,000	1,913,000
Fair value	10,189,000	7,610,000
Securities Available-for-Sale, Gross Unrealized Losses
Less than 12 months	(471,000)	(24,000)
Over 12 months	(316,000)	(87,000)
Gross unrealized losses	(787,000)	(111,000)
Municipal obligations
Securities Held-to-Maturity, Fair Value
Less than 12 months	443,000
Fair value	443,000
Securities Held-to-Maturity, Gross Unrealized Losses
Less than 12 months	(31,000)
Gross unrealized losses	(31,000)
Securities Available-for-Sale, Fair Value
Less than 12 months	2,899,000	3,283,000
Over 12 months	1,023,000	1,156,000
Fair value	3,922,000	4,439,000
Securities Available-for-Sale, Gross Unrealized Losses
Less than 12 months	(388,000)	(24,000)
Over 12 months	(141,000)	(19,000)
Gross unrealized losses	$ (529,000)	$ (43,000)