Loans - Age Analysis of Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Total Loans	$ 6,742,067	$ 6,747,873
30 to 59 Days Past Due
Total Loans	6,480	19,523
60 to 89 Days Past Due
Total Loans	4,732	12,793
Greater than 90 Days Past Due
Total Loans	47,140	33,975
Total Past Due
Total Loans	58,352	66,291
Current
Total Loans	6,683,715	6,681,582
Multi-family residential
Total Loans	2,536,046	2,531,613
Multi-family residential \| 30 to 59 Days Past Due
Total Loans	1,912	12,596
Multi-family residential \| 60 to 89 Days Past Due
Total Loans	824	9,255
Multi-family residential \| Greater than 90 Days Past Due
Total Loans	26,752	11,707
Multi-family residential \| Total Past Due
Total Loans	29,488	33,558
Multi-family residential \| Current
Total Loans	2,506,558	2,498,055
Commercial Real Estate
Total Loans	1,955,236	1,974,622
Commercial Real Estate \| 30 to 59 Days Past Due
Total Loans	1,989	4,846
Commercial Real Estate \| 60 to 89 Days Past Due
Total Loans	2,000	0
Commercial Real Estate \| Greater than 90 Days Past Due
Total Loans	6,824	6,376
Commercial Real Estate \| Total Past Due
Total Loans	10,813	11,222
Commercial Real Estate \| Current
Total Loans	1,944,423	1,963,400
One-to-four family - mixed- use property
Total Loans	504,091	513,938
One-to-four family - mixed- use property \| 30 to 59 Days Past Due
Total Loans	1,776	870
One-to-four family - mixed- use property \| 60 to 89 Days Past Due
Total Loans	988	1,234
One-to-four family - mixed- use property \| Greater than 90 Days Past Due
Total Loans	442	117
One-to-four family - mixed- use property \| Total Past Due
Total Loans	3,206	2,221
One-to-four family - mixed- use property \| Current
Total Loans	500,885	511,717
One-to-four family - residential
Total Loans	269,710	244,593
One-to-four family - residential \| 30 to 59 Days Past Due
Total Loans	147	802
One-to-four family - residential \| 60 to 89 Days Past Due
Total Loans	914	65
One-to-four family - residential \| Greater than 90 Days Past Due
Total Loans	635	812
One-to-four family - residential \| Total Past Due
Total Loans	1,696	1,679
One-to-four family - residential \| Current
Total Loans	268,014	242,914
Construction
Total Loans	63,234	60,114
Construction \| 30 to 59 Days Past Due
Total Loans	0	0
Construction \| 60 to 89 Days Past Due
Total Loans	0	0
Construction \| Greater than 90 Days Past Due
Total Loans	0	0
Construction \| Total Past Due
Total Loans	0	0
Construction \| Current
Total Loans	63,234	60,114
Small Business Administration
Total Loans	14,930	20,195
Small Business Administration \| 30 to 59 Days Past Due
Total Loans	134	0
Small Business Administration \| 60 to 89 Days Past Due
Total Loans	0	0
Small Business Administration \| Greater than 90 Days Past Due
Total Loans	2,529	2,531
Small Business Administration \| Total Past Due
Total Loans	2,663	2,531
Small Business Administration \| Current
Total Loans	12,267	17,664
Commercial business and other
Total Loans	1,398,820	1,402,798
Commercial business and other \| 30 to 59 Days Past Due
Total Loans	522	409
Commercial business and other \| 60 to 89 Days Past Due
Total Loans	6	2,239
Commercial business and other \| Greater than 90 Days Past Due
Total Loans	9,958	12,432
Commercial business and other \| Total Past Due
Total Loans	10,486	15,080
Commercial business and other \| Current
Total Loans	$ 1,388,334	$ 1,387,718