SECURITIES - Summary of amortized cost of securities available-for-sale and their estimated fair value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 313,685	$ 314,465
Gross Unrealized Gains	887	56
Gross Unrealized Losses	(23,766)	(30,755)
Estimated Fair Value	290,806	283,766
U.S. Treasury notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	36,622	36,935
Gross Unrealized Gains	62	0
Gross Unrealized Losses	(1,067)	(1,875)
Estimated Fair Value	35,617	35,060
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	77,153	82,248
Gross Unrealized Gains	227	56
Gross Unrealized Losses	(3,675)	(5,681)
Estimated Fair Value	73,705	76,623
U.S. Government agency obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,125	11,519
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(85)	(379)
Estimated Fair Value	1,040	11,140
Obligations issued by U.S. states and their political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	6,373	6,423
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(243)	(228)
Estimated Fair Value	6,130	6,195
Residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	167,025	149,808
Gross Unrealized Gains	585	0
Gross Unrealized Losses	(17,879)	(21,266)
Estimated Fair Value	149,731	128,542
Multifamily
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,955	12,522
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(626)	(999)
Estimated Fair Value	10,329	11,523
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,432	15,010
Gross Unrealized Gains	13	0
Gross Unrealized Losses	(191)	(327)
Estimated Fair Value	$ 14,254	$ 14,683