Loans Held for Sale - Delinquent and Non-performing Loans Sold During the Period Indicated (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) loan	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Nonperforming Financial Instruments [Member]
Loans sold | loan	7	33	2
Proceeds	$ 6,863	$ 28,632	$ 580
Net Charge-offs	0	(121)	0
Net gain	$ 119	$ 335	$ 42
Nonperforming Financial Instruments [Member] | Multi-family Residential Portfolio Segment [Member]
Loans sold | loan	2	13	1
Proceeds	$ 646	$ 14,269	$ 284
Net Charge-offs	0	(43)	0
Net gain	$ 14	$ 112	$ 42
Nonperforming Financial Instruments [Member] | Commercial Real Estate [Member]
Loans sold | loan	3	4
Proceeds	$ 5,690	$ 7,380
Net Charge-offs	0	(64)
Net gain	$ 100	$ 104
Nonperforming Financial Instruments [Member] | One-To-Four Family - Mixed-Use Property Portfolio Segment [Member]
Loans sold | loan	2	16	1
Proceeds	$ 527	$ 6,983	$ 296
Net Charge-offs	0	(14)	0
Net gain	$ 5	$ 119	$ 0
Performing Financial Instruments [Member]
Loans sold | loan	6		2
Proceeds	$ 25,130		$ 6,913
Net Charge-offs	0		0
Net gain	$ 0		$ 6
Performing Financial Instruments [Member] | Multi-family Residential Portfolio Segment [Member]
Loans sold | loan	5
Proceeds	$ 20,818
Net Charge-offs	0
Net gain	$ 0
Performing Financial Instruments [Member] | Commercial Real Estate [Member]
Loans sold | loan	1
Proceeds	$ 4,312
Net Charge-offs	0
Net gain	$ 0
Performing Financial Instruments [Member] | Commercial Business and Other Portfolio Segment [Member]
Loans sold | loan			1
Proceeds			$ 6,139
Net Charge-offs			0
Net gain			$ (62)
Performing Financial Instruments [Member] | Small Business Administration Portfolio Segment [Member]
Loans sold | loan			1
Proceeds			$ 774
Net Charge-offs			0
Net gain			$ 68