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Loans - Age Analysis of Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Total Loans	$ 6,816,144	$ 6,907,899
30 to 59 Days Past Due
Total Loans	21,781	14,655
60 to 89 Days Past Due
Total Loans	1,818	2,823
Greater than 90 Days Past Due
Total Loans	29,104	20,939
Total Past Due
Total Loans	52,703	38,417
Current
Total Loans	6,763,441	6,869,482
Multi-family Residential Portfolio Segment [Member]
Total Loans	2,642,841	2,662,226
Multi-family Residential Portfolio Segment [Member] | 30 to 59 Days Past Due
Total Loans	14,919	2,722
Multi-family Residential Portfolio Segment [Member] | 60 to 89 Days Past Due
Total Loans	0	539
Multi-family Residential Portfolio Segment [Member] | Greater than 90 Days Past Due
Total Loans	10,047	5,103
Multi-family Residential Portfolio Segment [Member] | Total Past Due
Total Loans	24,966	8,364
Multi-family Residential Portfolio Segment [Member] | Current
Total Loans	2,617,875	2,653,862
Commercial Real Estate [Member]
Total Loans	1,930,377	1,959,624
Commercial Real Estate [Member] | 30 to 59 Days Past Due
Total Loans	171	8,090
Commercial Real Estate [Member] | 60 to 89 Days Past Due
Total Loans	0	1,099
Commercial Real Estate [Member] | Greater than 90 Days Past Due
Total Loans	6,722	0
Commercial Real Estate [Member] | Total Past Due
Total Loans	6,893	9,189
Commercial Real Estate [Member] | Current
Total Loans	1,923,484	1,950,435
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member]
Total Loans	518,304	533,084
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | 30 to 59 Days Past Due
Total Loans	1,435	1,708
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | 60 to 89 Days Past Due
Total Loans	118	124
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Greater than 90 Days Past Due
Total Loans	371	1,005
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Total Past Due
Total Loans	1,924	2,837
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Current
Total Loans	516,380	530,247
One-To-Four Family - Residential Portfolio Segment [Member]
Total Loans	252,406	221,519
One-To-Four Family - Residential Portfolio Segment [Member] | 30 to 59 Days Past Due
Total Loans	1,928	1,715
One-To-Four Family - Residential Portfolio Segment [Member] | 60 to 89 Days Past Due
Total Loans	781	0
One-To-Four Family - Residential Portfolio Segment [Member] | Greater than 90 Days Past Due
Total Loans	889	4,670
One-To-Four Family - Residential Portfolio Segment [Member] | Total Past Due
Total Loans	3,598	6,385
One-To-Four Family - Residential Portfolio Segment [Member] | Current
Total Loans	248,808	215,134
Construction Portfolio Segment
Total Loans	63,318	58,261
Construction Portfolio Segment | 30 to 59 Days Past Due
Total Loans	0	0
Construction Portfolio Segment | 60 to 89 Days Past Due
Total Loans	0	0
Construction Portfolio Segment | Greater than 90 Days Past Due
Total Loans	0	0
Construction Portfolio Segment | Total Past Due
Total Loans	0	0
Construction Portfolio Segment | Current
Total Loans	63,318	58,261
Small Business Administration Portfolio Segment [Member]
Total Loans	19,615	20,345
Small Business Administration Portfolio Segment [Member] | 30 to 59 Days Past Due
Total Loans	31	0
Small Business Administration Portfolio Segment [Member] | 60 to 89 Days Past Due
Total Loans	0	0
Small Business Administration Portfolio Segment [Member] | Greater than 90 Days Past Due
Total Loans	2,532	2,576
Small Business Administration Portfolio Segment [Member] | Total Past Due
Total Loans	2,563	2,576
Small Business Administration Portfolio Segment [Member] | Current
Total Loans	17,052	17,769
Commercial Business and Other Portfolio Segment [Member]
Total Loans	1,389,283	1,452,840
Commercial Business and Other Portfolio Segment [Member] | 30 to 59 Days Past Due
Total Loans	3,297	420
Commercial Business and Other Portfolio Segment [Member] | 60 to 89 Days Past Due
Total Loans	919	1,061
Commercial Business and Other Portfolio Segment [Member] | Greater than 90 Days Past Due
Total Loans	8,543	7,585
Commercial Business and Other Portfolio Segment [Member] | Total Past Due
Total Loans	12,759	9,066
Commercial Business and Other Portfolio Segment [Member] | Current
Total Loans	$ 1,376,524	$ 1,443,774

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of 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

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
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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