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Allowance for Credit Losses (Impaired Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Loan loss allowances
Total troubled debt restructuring		$ 3,213
Period of charge off for past due unsecured commercial loans	90 days
Real estate - mortgage | Domestic | Residential: first lien
Loan loss allowances
Total troubled debt restructuring		1,642
Real estate - mortgage | Domestic | Residential Junior Lien
Loan loss allowances
Total troubled debt restructuring		714
Consumer | Domestic
Loan loss allowances
Total troubled debt restructuring		802
Foreign. | Foreign
Loan loss allowances
Total troubled debt restructuring		$ 55

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Number 229
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-Paragraph c
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Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 50
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
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-Section 50
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