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Loans - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) Segment Loan	Dec. 31, 2022 USD ($) Loan
Accounts Notes And Loans Receivable [Line Items]
Residential mortgage loans pledged to FHLBNY as blanket collateral	$ 892,285	$ 882,435
ACL related to pools	$ 2,100
Number of portfolio segment | Segment	3
Non-Performing Loans Outstanding		$ 1,700
Residential Mortgage Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of Non-Performing Loans | Loan	65	56
Non-Performing Loans Outstanding	$ 19,100	$ 9,000
Number of loan | Loan	24
Non-accrual commercial loan	$ 13,000
Additional Non-accrual Commercial Loan		10,100
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	$ 130,000	$ 110,300

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Additional Non-accrual Commercial Loan

+ References

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Non-accrual commercial loan

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Number of Non-Performing Loans

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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