Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	$ 553,770	$ 513,594
Gross Unrealized Gains, Available for Sale	10,280	7,701
Gross Unrealized Losses, Available for Sale	(10,466)	(20,041)
Fair Value	553,584us-gaap_AvailableForSaleSecurities	501,254us-gaap_AvailableForSaleSecurities
Trust preferred securities
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	26,400	27,531
Gross Unrealized Gains, Available for Sale	137	73
Gross Unrealized Losses, Available for Sale	(6,781)	(9,933)
Fair Value	19,756	17,671
Other debt securities
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	17,517	19,544
Gross Unrealized Gains, Available for Sale	487	240
Gross Unrealized Losses, Available for Sale	(74)	(230)
Fair Value	17,930	19,554
Other equity securities
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	2,331	2,775
Gross Unrealized Gains, Available for Sale	1,268	1,542
Gross Unrealized Losses, Available for Sale	0	0
Fair Value	3,599	4,317
Obligations of other U.S. Government agencies and corporations
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	6,119	6,144
Gross Unrealized Gains, Available for Sale	147	125
Gross Unrealized Losses, Available for Sale	(119)	(201)
Fair Value	6,147	6,068
Government agency mortgage backed securities \| Residential mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	292,283	261,659
Gross Unrealized Gains, Available for Sale	4,908	2,747
Gross Unrealized Losses, Available for Sale	(832)	(4,414)
Fair Value	296,359	259,992
Government agency mortgage backed securities \| Commercial mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	45,714	41,252
Gross Unrealized Gains, Available for Sale	1,608	1,373
Gross Unrealized Losses, Available for Sale	(137)	(584)
Fair Value	47,185	42,041
Government agency collateralized mortgage obligations \| Residential mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	158,436	149,682
Gross Unrealized Gains, Available for Sale	1,523	1,542
Gross Unrealized Losses, Available for Sale	(2,523)	(4,679)
Fair Value	157,436	146,545
Government agency collateralized mortgage obligations \| Commercial mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost, Available for Sale	4,970	5,007
Gross Unrealized Gains, Available for Sale	202	59
Gross Unrealized Losses, Available for Sale	0	0
Fair Value	$ 5,172	$ 5,066

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.

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

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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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