Fair Values of Financial Instruments (Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Carrying Amount [Member]
Assets
Cash and cash equivalents	$ 26,860	$ 20,915
Interest-bearing deposits	993
Loans held for sale	4,063	5,991
Loans	1,157,120	1,068,204
FHLB stock	10,925	10,482
Interest receivable	4,629	4,201
Liabilities
Deposits	1,153,382	1,091,382
FHLB advances	240,591	225,617
Other borrowings	4,189	9,458
Interest payable	350	199
Portion at Fair Value Measurement [Member]
Assets
Cash and cash equivalents	25,795	20,915
Interest-bearing deposits	993
Loans held for sale	4,094	6,058
Loans	1,139,450	1,056,357
FHLB stock	10,925	10,482
Interest receivable	4,629	4,201
Liabilities
Deposits	1,152,030	1,090,975
FHLB advances	239,866	224,621
Other borrowings	4,189	9,459
Interest payable	350	199
Fair Value, Inputs, Level 1 [Member] \| Portion at Fair Value Measurement [Member]
Assets
Cash and cash equivalents	25,795	20,915
Interest-bearing deposits	993
Liabilities
Deposits	779,577	740,759
Fair Value, Inputs, Level 2 [Member] \| Portion at Fair Value Measurement [Member]
Assets
Loans held for sale	4,094	6,058
FHLB stock	10,925	10,482
Interest receivable	4,629	4,201
Liabilities
FHLB advances	239,866	224,621
Other borrowings	4,189	9,459
Interest payable	350	199
Fair Value, Inputs, Level 3 [Member] \| Portion at Fair Value Measurement [Member]
Assets
Loans	1,139,450	1,056,357
Liabilities
Deposits	$ 372,453	$ 350,216

Interest-Bearing Deposits with Banks, Fair Value Disclosure

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Interest Payable, Fair Value Disclosure

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

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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

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=29638263&loc=d3e39828-111592

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

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Glossary Loan
-URI http://asc.fasb.org/extlink&oid=6517073

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Fair value portion of other liabilities.

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