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Loans Receivable and Allowance for Loan Losses (Classes of the Loan Portfolio Summarized by the Aggregate Risk Rating) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	$ 394,438	$ 364,970
Total Summarized by Aggregate Risk Rating [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	511,211	485,332
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	495,167	470,804
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	12,553	8,000
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	3,491	6,528
Doubtful Or Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	0	0
Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	393,614	364,172
Nonperforming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	824	798
Commercial Real Estate Loans [Member] | Total Summarized by Aggregate Risk Rating [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	384,376	374,790
Commercial Real Estate Loans [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	368,796	360,838
Commercial Real Estate Loans [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	12,301	7,918
Commercial Real Estate Loans [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	3,279	6,034
Commercial Real Estate Loans [Member] | Doubtful Or Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	0	0
Commercial [Member] | Total Summarized by Aggregate Risk Rating [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	126,835	110,542
Commercial [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	126,371	109,966
Commercial [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	252	82
Commercial [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	212	494
Commercial [Member] | Doubtful Or Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	0	0
Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	230,624	235,523
Residential Real Estate Loans [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	229,857	234,725
Residential Real Estate Loans [Member] | Nonperforming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	767	798
Construction Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	18,267	17,445
Construction Real Estate Loans [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	18,267	17,445
Construction Real Estate Loans [Member] | Nonperforming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	0	0
Consumer Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	145,547	112,002
Consumer Loans To Individuals [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	145,490	112,002
Consumer Loans To Individuals [Member] | Nonperforming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Amount	$ 57	$ 0

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No definition available.

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- Definition

Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

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