Investment Securities Securities Held-to-Maturity and Available-for-Sale, Scheduled Maturities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Held-to-maturity Securities [Abstract]
Securities Held-to-Maturity, Amortized Cost	$ 56,476	$ 66,003
Securities Held-to-Maturity, Gross Unrealized Gains	685	1,114
Securities Held-to-Maturity, Gross Unrealized Losses	(60)	(264)
Securities Held-to-Maturity, Fair Value	57,101	66,853
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost	302,152	338,546
Securities Available-for-Sale, Gross Unrealized Gains	4,211	2,883
Securities Available-for-Sale, Gross Unrealized Losses	(2,061)	(5,148)
Securities Available-for-Sale, Fair Value	304,302	336,281
U.S. Treasuries [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	4,971	0
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(181)	0
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	4,790	0
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	0	4,966
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	0	(258)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	0	4,708
Securities Available-for-Sale, Amortized Cost	4,971	4,966
Securities Available-for-Sale, Gross Unrealized Gains	0	0
Securities Available-for-Sale, Gross Unrealized Losses	(181)	(258)
Securities Available-for-Sale, Fair Value	4,790	4,708
U.S. Government Corporations and Agencies [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	0	5,999
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	0	16
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	0	0
Securities Available-for-Sale, Fair Value, Within 1 year	0	6,015
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	123,207	112,989
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	48	114
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(852)	(1,226)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	122,403	111,877
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	0	10,816
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	0	(560)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	0	10,256
Securities Available-for-Sale, Amortized Cost	123,207	129,804
Securities Available-for-Sale, Gross Unrealized Gains	48	130
Securities Available-for-Sale, Gross Unrealized Losses	(852)	(1,786)
Securities Available-for-Sale, Fair Value	122,403	128,148
State and Political Subdivisions [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	600	1,564
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	2	13
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	0	0
Securities Available-for-Sale, Fair Value, Within 1 year	602	1,577
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	10,443	5,305
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	48	14
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(18)	(29)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	10,473	5,290
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	49,641	41,974
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	1,658	710
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(124)	(698)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	51,175	41,986
Securities Available-for-Sale, Amortized Cost	102,930	106,742
Securities Available-for-Sale, Gross Unrealized Gains	3,629	1,964
Securities Available-for-Sale, Gross Unrealized Losses	(152)	(1,049)
Securities Available-for-Sale, Fair Value	106,407	107,657
Securities Available-for-Sale, Amortized Cost, Over 10 years	42,246	57,899
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	1,921	1,227
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(10)	(322)
Securities Available-for-Sale, Fair Value, Over 10 years	44,157	58,804
Residential Mortgage Backed Securities [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	5,096	0
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(32)	0
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	5,064	0
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	4,860	10,008
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	5
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(85)	(53)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	4,775	9,960
Securities Available-for-Sale, Amortized Cost	13,637	35,729
Securities Available-for-Sale, Gross Unrealized Gains	45	25
Securities Available-for-Sale, Gross Unrealized Losses	(129)	(274)
Securities Available-for-Sale, Fair Value	13,553	35,480
Securities Available-for-Sale, Amortized Cost, Over 10 years	3,681	25,721
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	45	20
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(12)	(221)
Securities Available-for-Sale, Fair Value, Over 10 years	3,714	25,520
Collateralized Mortgage Obligations [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	0	73
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	0	0
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	0	73
Securities Available-for-Sale, Amortized Cost	6,580	7,414
Securities Available-for-Sale, Gross Unrealized Gains	18	40
Securities Available-for-Sale, Gross Unrealized Losses	(123)	(253)
Securities Available-for-Sale, Fair Value	6,475	7,201
Securities Available-for-Sale, Amortized Cost, Over 10 years	6,580	7,341
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	18	40
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(123)	(253)
Securities Available-for-Sale, Fair Value, Over 10 years	6,475	7,128
Corporate Bonds [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	4,998	0
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	34	0
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	0	0
Securities Available-for-Sale, Fair Value, Within 1 year	5,032	0
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	17,590	18,838
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	30	52
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(235)	(411)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	17,385	18,479
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	20,943	16,474
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	4	4
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(389)	(1,117)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	20,558	15,361
Securities Available-for-Sale, Amortized Cost	43,531	35,312
Securities Available-for-Sale, Gross Unrealized Gains	68	56
Securities Available-for-Sale, Gross Unrealized Losses	(624)	(1,528)
Securities Available-for-Sale, Fair Value	42,975	33,840
Money Market Mutual Funds [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Gross Unrealized Gains	0	0
Equity Securities Available-for-Sale, Amortized Cost, No stated maturity	6,442	16,900
Equity Securities Available-for-Sale, Gross Unrealized Gains, No stated maturity	0	0
Equity Securities Available-for-Sale, Gross Unrealized Loss, No stated maturity	0	0
Equity Securities Available-for-Sale, Fair Value, No stated maturity	6,442	16,900
Equity Securities Available-for-Sale, Amortized Cost	6,442	16,900
Equity Securities Available-for-Sale, Gross Unrealized Loss	0	0
Equity Securities Available-for-Sale, Fair Value	6,442	16,900
Equity Securities [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Gross Unrealized Gains	403	668
Equity Securities Available-for-Sale, Amortized Cost, No stated maturity	854	1,679
Equity Securities Available-for-Sale, Gross Unrealized Gains, No stated maturity	403	668
Equity Securities Available-for-Sale, Gross Unrealized Loss, No stated maturity	0	0
Equity Securities Available-for-Sale, Fair Value, No stated maturity	1,257	2,347
Equity Securities Available-for-Sale, Amortized Cost	854	1,679
Equity Securities Available-for-Sale, Gross Unrealized Loss	0	0
Equity Securities Available-for-Sale, Fair Value	1,257	2,347
Corporate Bonds [Member]
Held-to-maturity Securities [Abstract]
Securities Held-to-Maturity, Amortized Cost, Within 1 year	15,150	11,148
Securities Held-to-Maturity, Gross Unrealized Gains, Within 1 year	178	122
Securities Held-to-Maturity, Gross Unrealized Losses, Within 1 year	0	0
Securities Held-to-Maturity, Fair Value, Within 1 year	15,328	11,270
Securities Held-to-Maturity, Amortized Cost, After 1 year to 5 years	41,326	54,855
Securities Held-to-Maturity, Gross Unrealized Gains, After 1 year to 5 years	507	992
Securities Held-to-Maturity, Gross Unrealized Losses, After 1 year to 5 years	(60)	(264)
Securities Held-to-Maturity, Fair Value, After 1 year to 5 years	41,773	55,583
Securities Held-to-Maturity, Amortized Cost	56,476	66,003
Securities Held-to-Maturity, Gross Unrealized Gains	685	1,114
Securities Held-to-Maturity, Gross Unrealized Losses	(60)	(264)
Securities Held-to-Maturity, Fair Value	$ 57,101	$ 66,853