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Securities (Amortized Cost and Fair Values of Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	$ 301,309	$ 309,289
Available-for-sale Securities, Gross Unrealized Gains	1,250	1,051
Available for Sale, Gross Unrealized Losses	(6,758)	(7,776)
Available for Sale, Fair Value	295,801	302,564
Pledged Financial Instruments, Not Separately Reported, Securities	230,852		$ 102,875
Total Debt Securities [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	300,999	308,969
Available-for-sale Securities, Gross Unrealized Gains	1,138	947
Available for Sale, Gross Unrealized Losses	(6,758)	(7,776)
Available for Sale, Fair Value	295,379	302,140
US Treasury Securities [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	2,004	2,005
Available-for-sale Securities, Gross Unrealized Gains	0
Available for Sale, Gross Unrealized Losses	(8)	(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	126,756	127,585
Available-for-sale Securities, Gross Unrealized Gains	1,071	884
Available for Sale, Gross Unrealized Losses	(2,627)	(3,368)
Available for Sale, Fair Value	125,200	125,101
Corporate obligations [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	10,208	10,255
Available-for-sale Securities, Gross Unrealized Gains	41	37
Available for Sale, Gross Unrealized Losses	(142)	(180)
Available for Sale, Fair Value	10,107	10,112
Mortgage-backed securities-government sponsored entities [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	162,031	169,124
Available-for-sale Securities, Gross Unrealized Gains	26	26
Available for Sale, Gross Unrealized Losses	(3,981)	(4,220)
Available for Sale, Fair Value	158,076	164,930
Equity securities-financial services [Member]
Schedule of Investments [Line Items]
Available for Sale, Amortized Cost	310	320
Available-for-sale Securities, Gross Unrealized Gains	112	104
Available for Sale, Gross Unrealized Losses	0	0
Available for Sale, Fair Value	$ 422	$ 424

X

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

+ References

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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