Loans and Allowance for Loan Losses (Average Recorded Investment and Interest Income Recognized on Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	$ 14,654	$ 15,185	$ 13,613	$ 15,064	$ 14,643
Recognized interest income	336	237	654	478	812
Commercial Loan [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	9,059	9,443	7,628	9,647	9,002
Recognized interest income	305	156	485	338	558
Commercial Loan [Member] \| Owner Occupied Re [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	1,269	2,985	1,419	2,617	2,423
Recognized interest income	17	40	49	73	88
Commercial Loan [Member] \| Non Owner Occupied Re [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	5,125	3,880	3,643	4,724	4,217
Recognized interest income	227	63	321	165	221
Commercial Loan [Member] \| Business Loan [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	2,665	2,506	2,497	2,270	2,306
Recognized interest income	61	51	115	98	243
Commercial Loan [Member] \| Construction Loans [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment		72	69	36	56
Recognized interest income		2		2	6
Consumer Loan [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	5,595	5,742	5,985	5,417	5,641
Recognized interest income	31	81	169	140	254
Consumer Loan [Member] \| Other Consumer [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	127	139	130	143	141
Recognized interest income	1	1	3	3	79
Consumer Loan [Member] \| Construction Loans [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment
Recognized interest income
Consumer Loan [Member] \| Real Estate Loan [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	3,609	3,063	3,911	3,207	3,372
Recognized interest income		58	102	98	170
Consumer Loan [Member] \| Home Equity Loan [Member]
Average recorded investment and interest income recognized on impaired loans
Average recorded investment	1,859	2,540	1,944	2,067	2,128
Recognized interest income	$ 30	$ 22	$ 64	$ 39
Recognized interest income					$ 5

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

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- References

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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