Loans Receivable and Allowance for Loan Losses (Allowance for Loan Losses and Recorded Investment in Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance,	$ 8,326	$ 7,419	$ 7,634	$ 6,463
Charge Offs	(433)	(272)	(764)	(546)
Recoveries	12	13	60	43
Provision for loan losses	375	600	1,350	1,800
Ending balance,	8,280	7,760	8,280	7,760
Ending balance collectively evaluated for impairment	8,280	7,760	8,280	7,760
Residential Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance,	1,455	1,254	1,272	1,092
Charge Offs	(10)		(85)	(83)
Recoveries		1	2	4
Provision for loan losses	(71)	98	185	340
Ending balance,	1,374	1,353	1,374	1,353
Ending balance collectively evaluated for impairment	1,374	1,353	1,374	1,353
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance,	5,247	5,228	5,265	4,623
Charge Offs	(110)	(212)	(244)	(308)
Recoveries	2	1	33	5
Provision for loan losses	120	282	205	979
Ending balance,	5,259	5,299	5,259	5,299
Ending balance collectively evaluated for impairment	5,259	5,299	5,259	5,299
Construction Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance,	128	93	90	78
Charge Offs		(15)		(28)
Recoveries				12
Provision for loan losses	(34)	19	4	35
Ending balance,	94	97	94	97
Ending balance collectively evaluated for impairment	94	97	94	97
Commercial, Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance,	690	360	463	307
Charge Offs	(241)		(246)
Provision for loan losses	265	112	497	165
Ending balance,	714	472	714	472
Ending balance collectively evaluated for impairment	714	472	714	472
Consumer Loans To Individuals [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance,	806	484	544	363
Charge Offs	(72)	(45)	(189)	(127)
Recoveries	10	11	25	22
Provision for loan losses	95	89	459	281
Ending balance,	839	539	839	539
Ending balance collectively evaluated for impairment	$ 839	$ 539	$ 839	$ 539

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

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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

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- Definition

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

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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://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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