Securities (Securities held to maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value
Less than 12 months	$ 26,942	$ 8,512
12 months or longer	7,889	8,989
Total	34,831	17,501
Unrealized Losses
Less than 12 months	(261)	(49)
12 months or longer	(526)	(467)
Total	(787)	(516)
Obligations of states and political subdivisions
Fair Value
Less than 12 months	26,942	8,512
12 months or longer	7,889	8,989
Total	34,831	17,501
Unrealized Losses
Less than 12 months	(261)	(49)
12 months or longer	(526)	(467)
Total	$ (787)	$ (516)

Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity 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 7
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563

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Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity in a continuous loss position.

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Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity that have been in a continuous loss position for less than twelve months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 320
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-Publisher FASB
-Name Accounting Standards Codification
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