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Allowance for Credit Losses (Impaired Loans) (Details)	3 Months Ended
	Mar. 31, 2022 USD ($)	May 02, 2022 USD ($) loan	Dec. 31, 2021 USD ($)
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	$ 2,811,000		$ 3,253,000
Amount of loans with some degree of payment deferral		$ 114,705,000
Period of charge off for past due unsecured commercial loans	90 days
Paycheck protection program loans (COVID-19 program)
Loan loss allowances, impaired financing receivable
Period of time PPP loans cover payroll and certain other costs	168 days
Interest rate on receivable	1.00%
Number of loans | loan		590
Amount of loans outstanding		$ 35,793,000
Paycheck protection program loans (COVID-19 program) | Loans made prior to June 5, 2020
Loan loss allowances, impaired financing receivable
Term of receivable (in years)	2 years
Paycheck protection program loans (COVID-19 program) | Loans made after June 5, 2020
Loan loss allowances, impaired financing receivable
Term of receivable (in years)	5 years
Real estate - mortgage | Domestic | Residential: first lien
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	$ 1,815,000		2,254,000
Real estate - mortgage | Domestic | Residential Junior Lien
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	104,000		105,000
Consumer | Domestic
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	831,000		878,000
Foreign. | Foreign
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	$ 61,000		$ 16,000

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- Definition

The amount of loans approved and closed as part of the lending program.

+ References

No definition available.

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- Definition

The term of financing receivables.

+ References

No definition available.

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- Definition

Amount of financing receivable with some degree of payment deferrals.

+ References

No definition available.

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- Definition

The contractual interest rate on financing receivable.

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- Definition

Represents the period of time the PPP loans are intended to support payroll and certain other costs to help businesses remain viable and allow their employees to pay their bills.

+ References

No definition available.

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- Definition

The number of loans approved and closed as part of the lending program.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ 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 http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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- Definition

Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447

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