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FAIR VALUE MEASUREMENT - Schedule of Fair Value Hierarchy Measurement (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Assets:
Investment securities AFS	$ 988,101,000	$ 1,019,959,000
Residential
Assets:
Investment securities AFS	159,960,000	167,462,000
Commercial
Assets:
Investment securities AFS	48,843,000	47,642,000
Municipal bonds
Assets:
Investment securities AFS	371,582,000	378,259,000
Corporate debt securities
Assets:
Investment securities AFS	25,546,000	24,944,000
U.S. Treasury securities
Assets:
Investment securities AFS	20,498,000	19,987,000
Agency debentures
Assets:
Investment securities AFS	8,713,000	9,276,000
Recurring
Assets:
Single family LHFS	29,999,000	20,312,000
Single family LHFI	959,000	1,287,000
Single family mortgage servicing rights	75,991,000	72,901,000
Total assets	1,143,592,000	1,159,871,000
Liabilities:
Total liabilities	7,242,000	10,701,000
Recurring | Residential
Assets:
Investment securities AFS	159,960,000	167,462,000
Recurring | Commercial
Assets:
Investment securities AFS	48,843,000	47,642,000
Recurring | Collateralized mortgage obligations residential
Assets:
Investment securities AFS	300,714,000	317,444,000
Recurring | Collateralized mortgage obligations commercial
Assets:
Investment securities AFS	52,245,000	54,945,000
Recurring | Municipal bonds
Assets:
Investment securities AFS	371,582,000	378,259,000
Recurring | Corporate debt securities
Assets:
Investment securities AFS	25,546,000	24,944,000
Recurring | U.S. Treasury securities
Assets:
Trading securities - U.S. Treasury securities	40,615,000	34,746,000
Investment securities AFS	20,498,000	19,987,000
Recurring | Agency debentures
Assets:
Investment securities AFS	8,713,000	9,276,000
Recurring | Eurodollar Future [Member]
Assets:
Derivatives		1,000
Recurring | Forward sale commitments
Assets:
Derivatives	426,000	237,000
Liabilities:
Derivative liabilities	657,000	402,000
Recurring | Options
Assets:
Derivatives		3,000
Recurring | Interest rate lock commitments
Assets:
Derivatives	918,000	175,000
Liabilities:
Derivative liabilities	2,000	49,000
Recurring | Interest rate swaps
Assets:
Derivatives	6,583,000	10,250,000
Liabilities:
Derivative liabilities	6,583,000	10,250,000
Level 1 | Recurring
Assets:
Single family LHFS	0	0
Single family LHFI	0	0
Single family mortgage servicing rights	0	0
Total assets	40,615,000	34,750,000
Liabilities:
Total liabilities	0	0
Level 1 | Recurring | Residential
Assets:
Investment securities AFS	0	0
Level 1 | Recurring | Commercial
Assets:
Investment securities AFS	0	0
Level 1 | Recurring | Collateralized mortgage obligations residential
Assets:
Investment securities AFS	0	0
Level 1 | Recurring | Collateralized mortgage obligations commercial
Assets:
Investment securities AFS	0	0
Level 1 | Recurring | Municipal bonds
Assets:
Investment securities AFS	0	0
Level 1 | Recurring | Corporate debt securities
Assets:
Investment securities AFS	0	0
Level 1 | Recurring | U.S. Treasury securities
Assets:
Trading securities - U.S. Treasury securities	40,615,000	34,746,000
Level 1 | Recurring | Agency debentures
Assets:
Investment securities AFS	0	0
Level 1 | Recurring | Eurodollar Future [Member]
Assets:
Derivatives		1,000
Level 1 | Recurring | Forward sale commitments
Assets:
Derivatives	0	0
Liabilities:
Derivative liabilities	0	0
Level 1 | Recurring | Options
Assets:
Derivatives		3,000
Level 1 | Recurring | Interest rate lock commitments
Assets:
Derivatives	0	0
Liabilities:
Derivative liabilities	0	0
Level 1 | Recurring | Interest rate swaps
Assets:
Derivatives	0	0
Liabilities:
Derivative liabilities	0	0
Level 1 | Recurring | Us Treasury Collateralized Mortgage Obligations
Assets:
Investment securities AFS	0	0
Level 2 | Recurring
Assets:
Single family LHFS	29,999,000	20,312,000
Single family LHFI	0	0
Single family mortgage servicing rights	0	0
Total assets	1,023,442,000	1,049,060,000
Liabilities:
Total liabilities	7,240,000	10,652,000
Level 2 | Recurring | Residential
Assets:
Investment securities AFS	158,293,000	165,764,000
Level 2 | Recurring | Commercial
Assets:
Investment securities AFS	48,843,000	47,642,000
Level 2 | Recurring | Collateralized mortgage obligations residential
Assets:
Investment securities AFS	300,714,000	317,444,000
Level 2 | Recurring | Collateralized mortgage obligations commercial
Assets:
Investment securities AFS	52,245,000	54,945,000
Level 2 | Recurring | Municipal bonds
Assets:
Investment securities AFS	371,582,000	378,259,000
Level 2 | Recurring | Corporate debt securities
Assets:
Investment securities AFS	25,546,000	24,944,000
Level 2 | Recurring | U.S. Treasury securities
Assets:
Trading securities - U.S. Treasury securities	0	0
Level 2 | Recurring | Agency debentures
Assets:
Investment securities AFS	8,713,000	9,276,000
Level 2 | Recurring | Eurodollar Future [Member]
Assets:
Derivatives		0
Level 2 | Recurring | Forward sale commitments
Assets:
Derivatives	426,000	237,000
Liabilities:
Derivative liabilities	657,000	402,000
Level 2 | Recurring | Options
Assets:
Derivatives		0
Level 2 | Recurring | Interest rate lock commitments
Assets:
Derivatives	0	0
Liabilities:
Derivative liabilities	0	0
Level 2 | Recurring | Interest rate swaps
Assets:
Derivatives	6,583,000	10,250,000
Liabilities:
Derivative liabilities	6,583,000	10,250,000
Level 2 | Recurring | Us Treasury Collateralized Mortgage Obligations
Assets:
Investment securities AFS	20,498,000	19,987,000
Level 3 | Recurring
Assets:
Single family LHFS	0	0
Single family LHFI	959,000	1,287,000
Single family mortgage servicing rights		72,901,000
Total assets	79,535,000	76,061,000
Liabilities:
Total liabilities	2,000	49,000
Level 3 | Recurring | Residential
Assets:
Investment securities AFS	1,667,000	1,698,000
Level 3 | Recurring | Commercial
Assets:
Investment securities AFS	0	0
Level 3 | Recurring | Collateralized mortgage obligations residential
Assets:
Investment securities AFS	0	0
Level 3 | Recurring | Collateralized mortgage obligations commercial
Assets:
Investment securities AFS	0	0
Level 3 | Recurring | Municipal bonds
Assets:
Investment securities AFS	0	0
Level 3 | Recurring | Corporate debt securities
Assets:
Investment securities AFS	0	0
Level 3 | Recurring | U.S. Treasury securities
Assets:
Trading securities - U.S. Treasury securities	0	0
Level 3 | Recurring | Agency debentures
Assets:
Investment securities AFS	0	0
Level 3 | Recurring | Eurodollar Future [Member]
Assets:
Derivatives		0
Level 3 | Recurring | Forward sale commitments
Assets:
Derivatives	0	0
Liabilities:
Derivative liabilities	0	0
Level 3 | Recurring | Options
Assets:
Derivatives
Level 3 | Recurring | Interest rate lock commitments
Assets:
Derivatives	918,000	175,000
Liabilities:
Derivative liabilities	2,000	49,000
Level 3 | Recurring | Interest rate swaps
Assets:
Derivatives	0	0
Liabilities:
Derivative liabilities	0	0
Level 3 | Recurring | Us Treasury Collateralized Mortgage Obligations
Assets:
Investment securities AFS	$ 0	$ 0

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