Loans (Loans Due After One Year) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Loans with fixed rate	$ 308,536	$ 291,134
Loans with floating or adjustable rates	670,475	614,052
Loans, total	979,011	905,186
Commercial Real Estate Portfolio Segment [Member]
Loans with fixed rate	157,667	124,549
Loans with floating or adjustable rates	501,696	455,774
Loans, total	659,363	580,323
Residential First Mortgages Portfolio Segment [Member]
Loans with fixed rate	106,792	118,205
Loans with floating or adjustable rates	54,986	44,298
Loans, total	161,778	162,503
Residential Rentals Portfolio Segment [Member]
Loans with fixed rate	16,974	17,499
Loans with floating or adjustable rates	88,966	80,551
Loans, total	105,940	98,050
Construction And Land Development Portfolio Segment [Member]
Loans with fixed rate	3,521	4,533
Loans with floating or adjustable rates	3,124	8,727
Loans, total	6,645	13,260
Home Equity And Second Mortgages Portfolio Segment [Member]
Loans with fixed rate	1,285	1,454
Loans with floating or adjustable rates	19,824	19,649
Loans, total	21,109	21,103
Consumer Portfolio Segment [Member]
Loans with fixed rate	373	259
Loans, total	373	259
Commercial Equipment Portfolio Segment [Member]
Loans with fixed rate	21,924	24,635
Loans with floating or adjustable rates	1,879	5,053
Loans, total	$ 23,803	$ 29,688

Amount billed to customers under long-term contracts or programs to be collected after the next fiscal year following the latest fiscal year. Excludes amounts due that have been withheld because of retainage provisions in a contract. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 910
-SubTopic 310
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68065756&loc=d3e49354-109356

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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