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Mortgage Servicing Rights, Net (Tables)	12 Months Ended
	Dec. 31, 2021
Mortgage Servicing [Abstract]
Schedule Of Servicing Assets At Fair Value [Table Text Block]	Year ended December 31 (Dollars in thousands) 2021 2020 Beginning balance $ 1,330 1,299 Additions, net 495 671 Amortization expense (516) (640) Ending balance $ 1,309 1,330 Valuation allowance included in MSRs, net: Beginning of period $ — — End of period — — Fair value of amortized MSRs: Beginning of period $ 1,489 2,111 End of period 1,908 1,489
Data And Assumptions Used In Fair Value Calculation Of MSRs [Table Text Block]	December 31 (Dollars in thousands) 2021 2020 Unpaid principal balance $ 255,310 265,964 Weighted average prepayment speed (CPR) 13.3 % 20.7 Discount rate (annual percentage) 9.5 % 10.0 Weighted average coupon interest rate 3.4 % 3.6 Weighted average remaining maturity (months) 260 253 Weighted average servicing fee (basis points) 25.0 25.0
Estimated Amortization Expense Of MSRs For Five Years [Table Text Block]	(Dollars in thousands) December 31, 2021 2022 $ 241 2023 194 2024 158 2025 129 2026 106

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Tabular disclosure of the activity in the balance of servicing assets (including a description of where changes in fair value are reported in the statement of income for each period for which results of operations are presented), including but not limited to, the following: beginning and ending balances, additions (for instance, through purchases of servicing assets), disposals, changes in fair value during the period resulting from changes in inputs or assumptions used in the valuation model, other changes in fair value along with a description of those changes, and other changes that affect the balance along with a description of those changes.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746

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Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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