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Loans held for sale - Delinquent and Non-performing Loans Sold During the Period Indicated (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) loan	Sep. 30, 2023 USD ($) loan	Sep. 30, 2024 USD ($) loan	Sep. 30, 2023 USD ($) loan
Nonperforming Financial Instruments [Member]
Loans sold | loan	4		15	13
Proceeds	$ 5,939		$ 10,439	$ 7,042
Net Charge-offs				(8)
Net gain	$ 137		$ 273	$ 108
Nonperforming Financial Instruments [Member] | Multi-family Residential Portfolio Segment [Member]
Loans sold | loan	1		5	7
Proceeds	$ 989		$ 2,973	$ 3,622
Net gain			$ 55	$ 69
Nonperforming Financial Instruments [Member] | Commercial Real Estate [Member]
Loans sold | loan	1		3	3
Proceeds	$ 2,827		$ 3,797	$ 1,867
Net Charge-offs				$ (8)
Nonperforming Financial Instruments [Member] | One-To-Four Family - Mixed-Use Property Portfolio Segment [Member]
Loans sold | loan	1		6	3
Proceeds	$ 900		$ 2,446	$ 1,553
Net gain	$ 113		$ 194	$ 39
Nonperforming Financial Instruments [Member] | One-To-Four Family - Residential Portfolio Segment [Member]
Loans sold | loan	1		1
Proceeds	$ 1,223		$ 1,223
Net gain	$ 24		$ 24
Performing Financial Instruments [Member]
Loans sold | loan	2	2	2	2
Proceeds	$ 8,321	$ 2,000	$ 8,321	$ 2,000
Performing Financial Instruments [Member] | Multi-family Residential Portfolio Segment [Member]
Loans sold | loan	1		1
Proceeds	$ 2,446		$ 2,446
Performing Financial Instruments [Member] | Commercial Real Estate [Member]
Loans sold | loan	1	2	1	2
Proceeds	$ 5,875	$ 2,000	$ 5,875	$ 2,000

X

- Definition

Amount of net recoveries (charge-offs) during the period on delinquent and non-performing loans during the period.

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- Definition

Proceeds from the sales of delinquent and non-performing loans sold during the period.

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- Definition

Delinquent and non-performing loans sold during the period.

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- Definition

Net gain (loss) on delinquent and non-performing loans during the period.

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