Commitments and Contingencies and Derivatives (Schedule of unfunded commitments) (Details) - USD ($) $ in Thousands		3 Months Ended
Jan. 01, 2023	Mar. 31, 2023
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Provision for credit losses	$ 221	$ 20
Ending balance		241
Commercial real estate
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Provision for credit losses		19
Ending balance		168
Commercial and industrial
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Provision for credit losses		1
Ending balance		66
Consumer
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Ending balance		7
Cumulative effect of change in accounting principle \| Accounting Standards Update 2016-13
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Ending balance		221
Cumulative effect of change in accounting principle \| Accounting Standards Update 2016-13 \| Commercial real estate
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Ending balance		149
Cumulative effect of change in accounting principle \| Accounting Standards Update 2016-13 \| Commercial and industrial
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Ending balance		65
Cumulative effect of change in accounting principle \| Accounting Standards Update 2016-13 \| Consumer
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Ending balance		$ 7

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446

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- Definition

Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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