Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Less Than 12 Months
Fair Value	$ 210,318	$ 57,332
Unrealized Losses	(3,472)	(163)
More Than 12 Months
Fair Value	42,285	299,536
Unrealized Losses	(216)	(8,026)
Total
Fair Value	252,603	356,868
Unrealized Losses	(3,688)	(8,189)
Mortgage Backed Securities - Residential
Less Than 12 Months
Fair Value	19,794	0
Unrealized Losses	(194)	0
More Than 12 Months
Fair Value	3,421	23,849
Unrealized Losses	(20)	(330)
Total
Fair Value	23,215	23,849
Unrealized Losses	(214)	(330)
Mortgage Backed Securities - Commercial
Less Than 12 Months
Fair Value		0
Unrealized Losses		0
More Than 12 Months
Fair Value
Unrealized Losses
Total
Fair Value		0
Unrealized Losses		0
Collateralized Mortgage Obligations
Less Than 12 Months
Fair Value	186,094	50,832
Unrealized Losses	(3,206)	(128)
More Than 12 Months
Fair Value	31,413	264,940
Unrealized Losses	(139)	(7,495)
Total
Fair Value	217,507	315,772
Unrealized Losses	(3,345)	(7,623)
State and Municipal Obligations
Less Than 12 Months
Fair Value	4,430	6,500
Unrealized Losses	(72)	(35)
More Than 12 Months
Fair Value	7,395	10,547
Unrealized Losses	(56)	(184)
Total
Fair Value	11,825	17,047
Unrealized Losses	(128)	(219)
Collateralized Debt Obligations
Less Than 12 Months
Fair Value	0	0
Unrealized Losses	0	0
More Than 12 Months
Fair Value	56	200
Unrealized Losses	(1)	(17)
Total
Fair Value	56	200
Unrealized Losses	$ (1)	$ (17)

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