Investment Securities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 334,892		$ 408,897		$ 422,347
Gross Unrealized Gains	4,077		3,455		5,417
Gross Unrealized Losses	2,443		7,713		5,999
Fair/Book Value	336,526		404,639		421,765
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months Fair Value	62,825		211,033		149,079
12 Months or More Fair Value	64,968		2,457		0
Total Fair Value	127,793		213,490		149,079
Less Than 12 Months Unrealized Loss	240		7,672		5,999
12 Months or More Unrealized Loss	2,203		41		0
Total Unrealized Loss	2,443		7,713		5,999
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, Total	69,441		68,505		70,961
Gross Unrealized Gains	725		812		966
Gross Unrealized Losses	17		627		741
Fair Value	70,149		68,690		71,186
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than Twelve Months Fair Value	1,943		9,518		9,411
Twelve Months or More Fair Value	2,556		0		0
Total Fair Value	4,499		9,518		9,411
Less than 12 Months Unrealized Loss	11		627		741
12 Months or Longer Unrealized Loss	6		0		0
Total Unrealized Loss	17		627		741
Obligations of States and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, Total	67,206		65,685		67,717
Gross Unrealized Gains	725		812		965
Gross Unrealized Losses	17		627		741
Fair Value	67,914		65,870		67,941
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than Twelve Months Fair Value	1,943		9,518		9,411
Twelve Months or More Fair Value	2,556		0		0
Total Fair Value	4,499		9,518		9,411
Less than 12 Months Unrealized Loss	11		627		741
12 Months or Longer Unrealized Loss	6		0		0
Total Unrealized Loss	17		627		741
Mortgage Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, Total			45	[1]	121	[1]
Gross Unrealized Gains			0	[1]	1	[1]
Gross Unrealized Losses			0	[1]	0	[1]
Fair Value			45	[1]	122	[1]
Other [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, Total	2,235		2,775		3,123
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	0		0		0
Fair Value	2,235		2,775		3,123
Government Agency & Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,220		28,287		28,404
Gross Unrealized Gains	141		149		239
Gross Unrealized Losses	0		0		0
Fair/Book Value	13,361		28,436		28,643
Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	321,187	[1]	329,469	[1]	342,963	[1]
Gross Unrealized Gains	3,936	[1]	3,026	[1]	4,928	[1]
Gross Unrealized Losses	2,443	[1]	7,566	[1]	5,814	[1]
Fair/Book Value	322,680	[1]	324,929	[1]	342,077	[1]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months Fair Value	62,825		195,736		129,198
12 Months or More Fair Value	64,968		0		0
Total Fair Value	127,793		195,736		129,198
Less Than 12 Months Unrealized Loss	240		7,566		5,814
12 Months or More Unrealized Loss	2,203		0		0
Total Unrealized Loss	2,443		7,566		5,814
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost			49,247		49,696
Gross Unrealized Gains			280		250
Gross Unrealized Losses			147		185
Fair/Book Value			49,380		49,761
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months Fair Value			15,297		19,881
12 Months or More Fair Value			2,457		0
Total Fair Value			17,754		19,881
Less Than 12 Months Unrealized Loss			106		185
12 Months or More Unrealized Loss			41		0
Total Unrealized Loss			147		185
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	485		1,894		1,284
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	0		0		0
Fair/Book Value	$ 485		$ 1,894		$ 1,284

[1] All Mortgage Backed Securities consist of securities collateralized by residential real estate and were issued by an agency or government sponsored entity of the U.S. government.