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Loans - Amortized Cost of Collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 6,668,912	$ 6,747,873
Basis adjustments	(1,421)	2,025
Portfolio Layer Hedges on Closed Portfolio of Loans | Designated as hedging instrument
Accounts, Notes, Loans and Financing Receivable [Line Items]
Basis adjustments	1,400	(2,000)
Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	40,092	22,896
Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	6,599	11,101
Multi-family Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,448,186	2,531,613
Multi-family Residential Portfolio Segment [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	14,531	11,707
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,961,833	1,974,622
Commercial | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	22,011	6,376
1-4 Family Mixed-Use Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	485,366	513,938
1-4 Family Mixed-Use Property | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans		117
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	336,505	244,593
1-4 Family Residential | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	750	812
Construction Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	51,527	60,114
Small Business Administration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	11,556	20,195
Small Business Administration | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	558	2,531
Commercial Business and Other Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,373,939	1,402,798
Commercial Business and Other Portfolio Segment | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,800	3,884
Commercial Business and Other Portfolio Segment | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 6,041	$ 8,570

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Amount of portfolio layer basis adjustments, of financing receivable. Excludes net investment in lease.

+ References

No definition available.

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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- Definition

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+ 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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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