Securities (Fair Value and Gross Unrealized Losses for Securities Available for Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value, Less than 12 months	$ 63,965	$ 43,273
Fair Value, 12 months or more	0	3,587
Fair Value, Total	63,965	46,860
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses, Less than 12 months	1,327	359
Gross Unrealized Losses, 12 months or more	0	43
Gross Unrealized Losses, Total	1,327	402
Obligations of U.S. government corporations and agencies [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value, Less than 12 months	19,129	21,296
Fair Value, 12 months or more	0	1,985
Fair Value, Total	19,129	23,281
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses, Less than 12 months	279	143
Gross Unrealized Losses, 12 months or more	0	15
Gross Unrealized Losses, Total	279	158
Mortgage-backed securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value, Less than 12 months	28,013	18,563
Fair Value, 12 months or more	0	1,105
Fair Value, Total	28,013	19,668
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses, Less than 12 months	456	194
Gross Unrealized Losses, 12 months or more	0	26
Gross Unrealized Losses, Total	456	220
Obligations of states and political subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value, Less than 12 months	16,823	3,414
Fair Value, 12 months or more	0	497
Fair Value, Total	16,823	3,911
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses, Less than 12 months	592	22
Gross Unrealized Losses, 12 months or more	0	2
Gross Unrealized Losses, Total	$ 592	$ 24

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563

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