Securities (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Amortized cost and fair value of securities available for sale
Amortized Cost	$ 686,405	$ 647,658
Gross Unrealized Gains	3,908	8,692
Gross Unrealized Losses	(16,065)	(9,545)
Fair Value	674,248	646,805
Trust preferred securities
Amortized cost and fair value of securities available for sale
Amortized Cost	23,749	24,770
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(5,360)	(5,301)
Fair Value	18,389	19,469
Other debt securities
Amortized cost and fair value of securities available for sale
Amortized Cost	22,053	18,899
Gross Unrealized Gains	310	468
Gross Unrealized Losses	(218)	(34)
Fair Value	22,145	19,333
Other equity securities
Amortized cost and fair value of securities available for sale
Amortized Cost	0	2,500
Gross Unrealized Gains	0	1,840
Gross Unrealized Losses	0	0
Fair Value	0	4,340
Obligations of other U.S. Government agencies and corporations
Amortized cost and fair value of securities available for sale
Amortized Cost	2,066	6,093
Gross Unrealized Gains	92	126
Gross Unrealized Losses	0	(19)
Fair Value	2,158	6,200
Government agency mortgage backed securities \| Residential mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	414,019	362,669
Gross Unrealized Gains	1,941	3,649
Gross Unrealized Losses	(6,643)	(1,778)
Fair Value	409,317	364,540
Government agency mortgage backed securities \| Commercial mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	50,628	58,864
Gross Unrealized Gains	696	1,002
Gross Unrealized Losses	(461)	(107)
Fair Value	50,863	59,759
Government agency collateralized mortgage obligations \| Residential mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	171,362	168,916
Gross Unrealized Gains	831	1,449
Gross Unrealized Losses	(3,367)	(2,305)
Fair Value	168,826	168,060
Government agency collateralized mortgage obligations \| Commercial mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	2,528	4,947
Gross Unrealized Gains	38	158
Gross Unrealized Losses	(16)	(1)
Fair Value	$ 2,550	$ 5,104

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
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-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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