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Loans and Allowance for Credit Losses on Loans - Troubled Debt Restructuring Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) loan borrowingRelationship	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans at amortized cost	$ 2,158,336		$ 2,255,645
Financing receivable, loan modifications under CARES Act, payment relief, number of borrowing relationships | borrowingRelationship	1
Financing receivable, loan modifications under CARES Act, payment relief | loan	2
Financing receivable, modified under CARES Act, payment relief	$ 7,100
Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modifications removal from troubled debt restructuring recorded investment	$ 2
Residential loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modifications removal from troubled debt restructuring recorded investment		$ 600

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Financing Receivable, Loan Modifications Under CARES Act, Payment Relief

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Financing Receivable, Loan Modifications Under CARES Act, Payment Relief, Number Of Borrowing Relationships

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Financing Receivable Modifications Removal From Troubled Debt Restructuring Recorded Investment

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes 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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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