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Allowance for Credit Losses - Loans Modified in Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) loan subsidiary	Dec. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	7	2
Pre- Modification Outstanding Recorded Investment	$ 714	$ 219
Post-Modification Outstanding Recorded Investment	$ 714	$ 219
Number of loans Defaulted TDRs | loan	1	1
Post- Modification Outstanding Recorded Investment TDRs	$ 87	$ 201
Mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | subsidiary	7
Pre- Modification Outstanding Recorded Investment	$ 714
Post-Modification Outstanding Recorded Investment	$ 714
Number of loans Defaulted TDRs | subsidiary	1
Post- Modification Outstanding Recorded Investment TDRs	$ 87
Residential real estate | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		2
Pre- Modification Outstanding Recorded Investment		$ 219
Post-Modification Outstanding Recorded Investment		$ 219
Number of loans Defaulted TDRs | loan		1
Post- Modification Outstanding Recorded Investment TDRs		$ 201

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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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Amount, after troubled debt restructuring, of modified financing receivable.

+ 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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Amount, before troubled debt restructuring, of financing receivable to be modified.

+ 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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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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