Loans (Allowance for Credit Losses on Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Allowance for loan losses:
Beginning Balance	$ 10,846	$ 10,471	$ 10,976	$ 10,515
Charge-offs	(333)	(164)	(1,075)	(744)
Recoveries	30	18	142	54
Provisions	375	400	875	900
Ending Balance	10,918	10,725	10,918	10,725
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	6,742	6,664	6,882	6,451
Charge-offs	(4)	0	(4)	(236)
Recoveries	13	4	15	6
Provisions	258	(105)	116	342
Ending Balance	7,009	6,563	7,009	6,563
Residential First Mortgages Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	722	937	755	1,144
Charge-offs		(76)		(113)
Provisions	(13)	(124)	(46)	(294)
Ending Balance	709	737	709	737
Residential Rentals Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	462	459	498	512
Charge-offs			(53)
Recoveries			46
Provisions	(4)	10	(33)	(43)
Ending Balance	458	469	458	469
Construction And Land Development Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	148	482	310	462
Charge-offs	(329)		(329)
Provisions	427	16	265	36
Ending Balance	246	498	246	498
Home Equity And Second Mortgage Loans [Member]
Allowance for loan losses:
Beginning Balance	132	118	133	162
Charge-offs		0		(7)
Recoveries	2	5	4	14
Provisions	(3)	(19)	(6)	(65)
Ending Balance	131	104	131	104
Commercial Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	1,406	1,045	1,482	1,013
Charge-offs		(88)		(88)
Recoveries	5		10
Provisions	(9)	246	(90)	278
Ending Balance	1,402	1,203	1,402	1,203
Consumer Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	8	7	6	7
Charge-offs		0	(4)	(1)
Recoveries	1		2
Provisions		0	5	1
Ending Balance	9	7	9	7
Commercial Equipment Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	1,226	759	910	764
Charge-offs		0	(685)	(299)
Recoveries	9	9	65	34
Provisions	(281)	376	664	645
Ending Balance	$ 954	$ 1,144	$ 954	$ 1,144

A valuation allowance for financing receivables that are expected to be uncollectible.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

+ Details

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

+ Details

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- References

No definition available.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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