INVESTMENT SECURITIES - Securities with Gross Unrealized Losses (Details) $ in Thousands	Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Securities Available-for-Sale, Fair Value
Less than 12 Months	$ 2,973	$ 554
12 Months or Greater	21,800	67,339
Fair Value	24,773	67,893
Securities Available-for-Sale, Gross Unrealized Losses
Less than 12 Months	(13)	(1)
12 Months or Greater	(3,542)	(9,181)
Gross Unrealized Losses	(3,555)	(9,182)
Securities Held-to-Maturity, Fair Value
12 Months or Greater	11,699	11,227
Fair Value	11,699	11,227
Securities Held-to-Maturity, Gross Unrealized Losses
12 Months or Greater	(1,751)	(2,234)
Gross Unrealized Losses	(1,751)	(2,234)
Total, Fair Value
Less than 12 Months	2,973	554
12 Months or Greater	33,499	78,566
Fair Value	36,472	79,120
Total, Gross Unrealized Losses
Less than 12 Months	(13)	(1)
12 Months or Greater	(5,293)	(11,415)
Gross Unrealized Losses	$ (5,306)	$ (11,416)
Number of securities in unrealized loss position | security	42	92
Mortgage-backed securities
Securities Available-for-Sale, Fair Value
Less than 12 Months	$ 2,973	$ 554
12 Months or Greater	19,523	55,959
Fair Value	22,496	56,513
Securities Available-for-Sale, Gross Unrealized Losses
Less than 12 Months	(13)	(1)
12 Months or Greater	(3,389)	(8,205)
Gross Unrealized Losses	(3,402)	(8,206)
U.S. Government and agency obligations
Securities Available-for-Sale, Fair Value
12 Months or Greater	995	7,388
Fair Value	995	7,388
Securities Available-for-Sale, Gross Unrealized Losses
12 Months or Greater	(5)	(611)
Gross Unrealized Losses	(5)	(611)
Securities Held-to-Maturity, Fair Value
12 Months or Greater	11,267	10,793
Fair Value	11,267	10,793
Securities Held-to-Maturity, Gross Unrealized Losses
12 Months or Greater	(1,733)	(2,210)
Gross Unrealized Losses	(1,733)	(2,210)
Municipal obligations
Securities Available-for-Sale, Fair Value
12 Months or Greater	1,282	3,992
Fair Value	1,282	3,992
Securities Available-for-Sale, Gross Unrealized Losses
12 Months or Greater	(148)	(365)
Gross Unrealized Losses	(148)	(365)
Securities Held-to-Maturity, Fair Value
12 Months or Greater	432	434
Fair Value	432	434
Securities Held-to-Maturity, Gross Unrealized Losses
12 Months or Greater	(18)	(24)
Gross Unrealized Losses	$ (18)	$ (24)