SECURITIES - Summary of available for sale securities with unrealized losses (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	$ (10,268)	$ (2,275)
Estimated Fair Value	243,534	153,211
Unrealized Losses	(5,203)	(368)
Estimated Fair Value	59,812	11,899
Unrealized Losses	(15,471)	(2,643)
Estimated Fair Value	303,346	165,110
U.S. Treasury Note
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	(1,083)	(105)
Estimated Fair Value	38,949	16,814
Unrealized Losses	(583)	0
Estimated Fair Value	6,324	0
Unrealized Losses	(1,666)	(105)
Estimated Fair Value	45,273	16,814
Corporate Bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	(1,381)	(290)
Estimated Fair Value	45,434	17,183
Unrealized Losses	(368)	0
Estimated Fair Value	4,988	0
Unrealized Losses	(1,749)	(290)
Estimated Fair Value	50,422	17,183
U.S. Government agency obligations
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	(356)	(49)
Estimated Fair Value	9,643	9,951
Unrealized Losses	(188)	(130)
Estimated Fair Value	7,419	7,980
Unrealized Losses	(544)	(179)
Estimated Fair Value	17,062	17,931
Obligations issued by U.S. states and their political subdivisions
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	(210)
Estimated Fair Value	2,925
Unrealized Losses	0
Estimated Fair Value	0
Unrealized Losses	(210)
Estimated Fair Value	2,925
Residential one-to-four family
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	(6,795)	(1,761)
Estimated Fair Value	129,328	104,805
Unrealized Losses	(3,812)	(144)
Estimated Fair Value	38,897	3,009
Unrealized Losses	(10,607)	(1,905)
Estimated Fair Value	168,225	107,814
Multifamily
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	(304)	0
Estimated Fair Value	12,654	0
Unrealized Losses	(124)	(94)
Estimated Fair Value	784	910
Unrealized Losses	(427)	(94)
Estimated Fair Value	13,438	910
Asset-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized Losses	(139)	(70)
Estimated Fair Value	4,601	4,458
Unrealized Losses	(128)	0
Estimated Fair Value	1,400	0
Unrealized Losses	(268)	(70)
Estimated Fair Value	$ 6,001	$ 4,458

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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