ALLOWANCE FOR CREDIT LOSSES - Summary of allowance for credit lost by portfolio segment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 12,965	$ 14,154
Charge-offs	(63)	(56)
Recoveries	13	11
Provision for Credit Loss - Loans	1,477	(1,144)
Balance at end of period	14,392	12,965
Residential Portfolio Segment \| Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	1,989	1,968
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Loss - Loans	205	21
Balance at end of period	2,194	1,989
Residential Portfolio Segment \| Multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	6,609	7,046
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Loss - Loans	38	(437)
Balance at end of period	6,647	6,609
Commercial Real Estate Portfolio Segment \| Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	3,641	3,748
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Loss - Loans	635	(107)
Balance at end of period	4,276	3,641
Construction and Land Portfolio Segment \| Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	460	1,222
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Loss - Loans	440	(762)
Balance at end of period	900	460
Junior Lien Portfolio Segment \| Junior liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	109	76
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Loss - Loans	50	33
Balance at end of period	159	109
Commercial Portfolio Segment \| Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	157	94
Charge-offs	(2)	0
Recoveries	0	0
Provision for Credit Loss - Loans	61	63
Balance at end of period	216	157
Consumer and Other Portfolio Segment \| Consumer and other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	0	0
Charge-offs	(61)	(56)
Recoveries	13	11
Provision for Credit Loss - Loans	48	45
Balance at end of period	$ 0	$ 0

Financing Receivable, Excluding Accrued Interest, Allowance For Credit Loss, Recovery, Net Of Purchased Consumer Loans

No definition available.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

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