Securities (Amortized Cost and Fair Values of Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	$ 288,111	$ 309,289
Available-for-sale Securities, Gross Unrealized Gains	1,672	1,051
Available for Sale, Gross Unrealized Losses	(4,077)	(7,776)
Available for Sale, Fair Value	285,706	302,564
Pledged Financial Instruments, Not Separately Reported, Securities	205,678		$ 217,907
Total Debt Securities [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	287,926	308,969
Available-for-sale Securities, Gross Unrealized Gains	1,621	947
Available for Sale, Gross Unrealized Losses	(4,077)	(7,776)
Available for Sale, Fair Value	285,470	302,140
US Treasury Securities [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	2,002	2,005
Available-for-sale Securities, Gross Unrealized Gains	0
Available for Sale, Gross Unrealized Losses	(6)	(8)
Available for Sale, Fair Value	1,996	1,997
States and political subdivisions [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	119,173	127,585
Available-for-sale Securities, Gross Unrealized Gains	1,548	884
Available for Sale, Gross Unrealized Losses	(1,016)	(3,368)
Available for Sale, Fair Value	119,705	125,101
Corporate obligations [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	10,115	10,255
Available-for-sale Securities, Gross Unrealized Gains	39	37
Available for Sale, Gross Unrealized Losses	(65)	(180)
Available for Sale, Fair Value	10,089	10,112
Mortgage-backed securities-government sponsored entities [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	156,636	169,124
Available-for-sale Securities, Gross Unrealized Gains	34	26
Available for Sale, Gross Unrealized Losses	(2,990)	(4,220)
Available for Sale, Fair Value	153,680	164,930
Equity securities-financial services [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	185	320
Available-for-sale Securities, Gross Unrealized Gains	51	104
Available for Sale, Gross Unrealized Losses	0	0
Available for Sale, Fair Value	$ 236	$ 424

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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