Loans and Allowance for Credit Losses - Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 40,161	$ 40,442	$ 37,135
Charge-offs	(7,969)	(11,157)	(3,348)
Recoveries	285	345	1,813
Provision (benefit)	7,675	10,531	4,842
Ending balance	40,152	40,161	40,442
Multi-family Residential Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	10,373	9,552	8,185
Charge-offs			(208)
Recoveries	2	2	77
Provision (benefit)	2,770	819	1,498
Ending balance	13,145	10,373	9,552
Commercial Real Estate
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	8,665	8,184	7,158
Charge-offs	(421)	(8)
Provision (benefit)	1,044	489	1,026
Ending balance	9,288	8,665	8,184
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,610	1,875	1,755
Recoveries	2	1
Provision (benefit)	11	(266)	120
Ending balance	1,623	1,610	1,875
One-To-Four Family - Residential Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	668	901	784
Charge-offs	(14)	(23)	(20)
Recoveries	102	52	5
Provision (benefit)	3	(262)	132
Ending balance	759	668	901
Construction Portfolio Segment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	158	261	186
Provision (benefit)	213	(103)	75
Ending balance	371	158	261
Small Business Administration Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,626	2,198	1,209
Charge-offs	(7)	(7)	(1,053)
Recoveries	108	248	47
Provision (benefit)	(204)	(813)	1,995
Ending balance	1,523	1,626	2,198
Taxi Medallion Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Recoveries			447
Provision (benefit)			(447)
Commercial Business and Other Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	17,061	17,471	17,858
Charge-offs	(7,527)	(11,119)	(2,067)
Recoveries	71	42	1,237
Provision (benefit)	3,838	10,667	443
Ending balance	$ 13,443	$ 17,061	$ 17,471

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

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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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 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: 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

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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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

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