Investment Securities (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Securities Available for Sale [Abstract]
Amortized Cost	$ 283,077		$ 277,008
Gross Unrealized Gains	203		134
Gross Unrealized Losses	(9,733)		(13,884)
Fair Value	273,547		263,258
Securities Held to Maturity [Abstract]
Fair Value	33		37
Available-for-sale Amortized Cost [Abstract]
Due in One Year or Less	718
Due After One Year Through Five Years	734
Due After Five Years Through Ten Years	1,169
Due After Ten Years	923
Total	3,544
Mortgage-Backed Securities	279,533
Amortized Cost	283,077
Available-for-sale Fair Value [Abstract]
Due in One Year or Less	721
Due After One Year Through Five Years	745
Due After Five Years Through Ten Years	1,160
Due After Ten Years	911
Total	3,537
Mortgage-Backed Securities	270,010
Fair Value	273,547
Held-to-maturity Amortized Cost [Abstract]
Due in One Year or Less	0
Due After One Year Through Five Years	33
Due After Five Years Through Ten Years	0
Due After Ten Years	0
Total	33
Mortgage-Backed Securities	0
Amortized Cost	33		37
Held-to-maturity Fair Value [Abstract]
Due in One Year or Less	0
Due After One Year Through Five Years	33
Due After Five Years Through Ten Years	0
Due After Ten Years	0
Total	33
Mortgage-Backed Securities	0
Fair Value	33		37
Proceeds from sale of investment securities available for sale	0	36,217
Available-for-sale securities, gross realized gains	0	191
Available-for-sale securities, gross realized losses	0	(193)
Gross realized gains on held for maturity	1
Investment securities pledged	113,540		112,913
Continuous unrealized loss position [Abstract]
Less Than 12 Months, Fair value	74,552		191,711
12 Months or Greater, Fair value	179,738		63,194
Total, Fair Value	254,290		254,905
Less Than 12 Months, Gross Unrealized Losses	(608)		(9,525)
12 Months or Greater, Gross Unrealized Losses	(9,125)		(4,359)
Total, Gross Unrealized Losses	(9,733)		(13,884)
Debt securities with unrealized losses, depreciated (in hundredths)	3.69%
US Government Agencies Mortgage-Backed [Member]
Securities Available for Sale [Abstract]
Amortized Cost	279,533		273,029
Gross Unrealized Gains	182		119
Gross Unrealized Losses	(9,705)		(13,800)
Fair Value	270,010		259,348
Continuous unrealized loss position [Abstract]
Less Than 12 Months, Fair value	74,078		190,064
12 Months or Greater, Fair value	178,358		63,194
Total, Fair Value	252,436		253,258
Less Than 12 Months, Gross Unrealized Losses	(602)		(9,441)
12 Months or Greater, Gross Unrealized Losses	(9,103)		(4,359)
Total, Gross Unrealized Losses	(9,705)		(13,800)
State, County & Municipal [Member]
Securities Available for Sale [Abstract]
Amortized Cost	3,544		3,979
Gross Unrealized Gains	21		15
Gross Unrealized Losses	(28)		(84)
Fair Value	3,537		3,910
Securities Held to Maturity [Abstract]
Amortized Cost	33		37
Gross Unrealized Gains	0		0
Gross Unrealized Losses	0		0
Fair Value	33		37
Held-to-maturity Fair Value [Abstract]
Fair Value	33		37
Continuous unrealized loss position [Abstract]
Less Than 12 Months, Fair value	474		1,647
12 Months or Greater, Fair value	1,380		0
Total, Fair Value	1,854		1,647
Less Than 12 Months, Gross Unrealized Losses	(6)		(84)
12 Months or Greater, Gross Unrealized Losses	(22)		0
Total, Gross Unrealized Losses	$ (28)		$ (84)