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Loans - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) Loan	Jun. 30, 2021 Segment	Jun. 30, 2022 USD ($) Loan Segment	Jun. 30, 2021 Loan Segment	Mar. 31, 2022 USD ($) Loan	Dec. 31, 2021 USD ($) Loan
Accounts Notes And Loans Receivable [Line Items]
Residential mortgage loans pledged to FHLBNY as blanket collateral	$ 853,211		$ 853,211			$ 819,524
Number of portfolio segment | Segment			3
Number of loan	1	0	2	5
Non-accrual commercial loan	$ 2,600		$ 2,600		$ 2,600
Number of loans subsequently defaulted | Loan			0	0
Residential Mortgage Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of Non-Performing Loans | Loan	53		53		51	44
Non-Performing Loans Outstanding	$ 11,700		$ 11,700		$ 7,900	$ 8,300
Non-accrual commercial loan	3,400		3,400		3,800
Additional Non-accrual Commercial Loan	2,600		2,600		$ 2,600
Asset Pledged as Collateral [Member] | Residential Mortgage Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Residential mortgage loans pledged to FHLBNY as blanket collateral	$ 117,200		$ 117,200			$ 123,200

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Number of financing receivables that have been modified by troubled debt restructurings.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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-Section 50
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