Fair Value of Assets and Liabilities (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale	$ 146,089	$ 158,591
Mortgage servicing rights	1,081	769
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	85,348	79,524
Securities available-for-sale	146,089	158,591
Restricted investment in bank stocks	6,122	6,311
Loans held for sale	3,795	1,715
Loans, net	1,475,793	1,383,075
Interest receivable	5,142	4,968
Mortgage servicing rights	876	672
Deposits	1,470,259	1,384,507
Short-term borrowings	8,624	20,495
Long-term debt	135,310	130,310
Interest payable	865	626
Off-balance sheet instruments	0	0
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	85,348	79,524
Securities available-for-sale	146,089	158,591
Restricted investment in bank stocks	6,122	6,311
Loans held for sale	3,928	1,798
Loans, net	1,452,672	1,368,753
Interest receivable	5,142	4,968
Mortgage servicing rights	1,081	769
Deposits	1,452,587	1,369,008
Short-term borrowings	8,624	20,495
Long-term debt	132,178	127,586
Interest payable	865	626
Off-balance sheet instruments	0	0
(Level 1) Quoted Prices In Active Markets For Identical Assets [Member] \| Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	85,348	79,524
Securities available-for-sale	13,572	14,071
Restricted investment in bank stocks	0	0
Loans held for sale	0	0
Loans, net	0	0
Interest receivable	0	0
Mortgage servicing rights	0	0
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Interest payable	0	0
Off-balance sheet instruments	0	0
(Level 2) Significant Other Observable Inputs [Member] \| Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available-for-sale	132,517	144,520
Restricted investment in bank stocks	6,122	6,311
Loans held for sale	3,928	1,798
Loans, net	0	0
Interest receivable	5,142	4,968
Mortgage servicing rights	0	0
Deposits	1,452,587	1,369,008
Short-term borrowings	8,624	20,495
Long-term debt	123,740	119,474
Interest payable	865	626
Off-balance sheet instruments	0	0
(Level 3) Significant Other Unobservable Inputs [Member] \| Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available-for-sale	0	0
Restricted investment in bank stocks	0	0
Loans held for sale	0	0
Loans, net	1,452,672	1,368,753
Interest receivable	0	0
Mortgage servicing rights	1,081	769
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	8,438	8,112
Interest payable	0	0
Off-balance sheet instruments	$ 0	$ 0

Off-balance sheet instruments, Estimated Fair Value

No definition available.

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

- Definition

Fair value portion of accrued expenses.

+ References

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
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-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

No definition available.

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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.

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No definition available.

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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

No definition available.

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

Fair value portion of receivables, including, but not limited to, trade account receivables, note receivables, and loan receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
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- Definition

The aggregate value of all restricted investments.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 4
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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

No definition available.

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