Securities (Details 2) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 6,173
Less Than 12 Months
Fair Value	204,298	$ 464,602
Unrealized Losses	(2,893)	(11,155)
More Than 12 Months
Fair Value	73,437	80,151
Unrealized Losses	(2,107)	(3,259)
Total
Fair Value	277,735	544,753
Unrealized Losses	(5,000)	(14,414)
US Government Agencies Debt Securities [Member]
Less Than 12 Months
Fair Value	5,777	12,224
Unrealized Losses	(141)	(377)
More Than 12 Months
Fair Value	0	0
Unrealized Losses	0	0
Total
Fair Value	5,777	12,224
Unrealized Losses	(141)	(377)
Mortgage Backed Securities - Residential
Less Than 12 Months
Fair Value	70,455	202,248
Unrealized Losses	(819)	(4,072)
More Than 12 Months
Fair Value	94	152
Unrealized Losses	0	(1)
Total
Fair Value	70,549	202,400
Unrealized Losses	(819)	(4,073)
Mortgage Backed Securities - Commercial
Less Than 12 Months
Fair Value	1
Unrealized Losses	0
More Than 12 Months
Fair Value	0
Unrealized Losses	0
Total
Fair Value	1
Unrealized Losses	0
Collateralized Mortgage Obligations
Less Than 12 Months
Fair Value	104,720	169,717
Unrealized Losses	(1,489)	(3,086)
More Than 12 Months
Fair Value	73,343	79,999
Unrealized Losses	(2,107)	(3,258)
Total
Fair Value	178,063	249,716
Unrealized Losses	(3,596)	(6,344)
State and Municipal Obligations
Less Than 12 Months
Fair Value	23,345	72,852
Unrealized Losses	(444)	(2,396)
More Than 12 Months
Fair Value	0	0
Unrealized Losses	0	0
Total
Fair Value	23,345	72,852
Unrealized Losses	$ (444)	(2,396)
Collateralized Debt Obligations
Less Than 12 Months
Fair Value		7,561
Unrealized Losses		(1,224)
More Than 12 Months
Fair Value		0
Unrealized Losses		0
Total
Fair Value		7,561
Unrealized Losses		$ (1,224)

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