Investment Securities Available for Sale (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	$ 370,539	$ 453,675	$ 481,778
Available-for-Sale	374,335	457,606	486,888
Gross Unrealized Gains	4,568	5,078	6,280
Gross Unrealized Losses	772	1,147	1,170
Available-For-Sale Securities, Pledged as Collateral	292,850	243,769	314,693
Maturities of Debt Securities, at Amortized Cost
Within One Year	41,937
From 1 - 5 Years	306,694
From 5 - 10 Years	19,148
Over 10 Years	1,640
Maturities of Debt Securities at Fair Value
Within One Year	42,068
From 1 - 5 Years	309,741
From 5 - 10 Years	19,809
Over 10 Years	1,440
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	96,946	113,196	188,707
12 Months or Longer	45,926	56,350	9,305
Total	142,872	169,546	198,012
Number of Securities in a Continuous Loss Position, in number of securities	75	165	286
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	314	656	952
12 Months or Longer	458	491	218
Total	772	1,147	1,170
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Gains	1	2	2
Gross Unrealized Losses	435	395	412
Maturities of Debt Securities, at Amortized Cost
Within One Year	0
From 1 - 5 Years	128,653
From 5 - 10 Years	5,832
Over 10 Years	0
Maturities of Debt Securities at Fair Value
Within One Year	0
From 1 - 5 Years	128,247
From 5 - 10 Years	5,804
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	90,968	60,664	105,517
12 Months or Longer	27,994	33,849	4,992
Total	118,962	94,513	110,509
Number of Securities in a Continuous Loss Position, in number of securities	35	26	30
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	296	336	405
12 Months or Longer	139	59	7
Total	435	395	412
U.S. Agency Obligations [Member] | U.S. Government Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	134,485	136,868	150,184
Available-for-Sale	134,051	136,475	149,774
State and Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	91,799	127,224	134,059
Available-for-Sale	92,150	127,389	133,919
Gross Unrealized Gains	355	306	175
Gross Unrealized Losses	4	141	315
Maturities of Debt Securities, at Amortized Cost
Within One Year	35,472
From 1 - 5 Years	54,172
From 5 - 10 Years	1,515
Over 10 Years	640
Maturities of Debt Securities at Fair Value
Within One Year	35,539
From 1 - 5 Years	54,438
From 5 - 10 Years	1,533
Over 10 Years	640
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	450	29,967	58,710
12 Months or Longer	2,665	4,597	3,513
Total	3,115	34,564	62,223
Number of Securities in a Continuous Loss Position, in number of securities	18	107	230
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	0	120	304
12 Months or Longer	4	21	11
Total	4	141	315
Mortgage-Backed Securities - Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	126,108	171,321	179,235
Available-for-Sale	130,101	175,778	185,215
Gross Unrealized Gains	4,046	4,714	6,041
Gross Unrealized Losses	53	257	61
Maturities of Debt Securities, at Amortized Cost
Within One Year	6,465
From 1 - 5 Years	107,842
From 5 - 10 Years	11,801
Over 10 Years	0
Maturities of Debt Securities at Fair Value
Within One Year	6,529
From 1 - 5 Years	111,100
From 5 - 10 Years	12,472
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	5,528	15,190	8,482
12 Months or Longer	4,515	11,841	0
Total	10,043	27,031	8,482
Number of Securities in a Continuous Loss Position, in number of securities	7	13	4
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	18	108	61
12 Months or Longer	35	149	0
Total	53	257	61
Mortgage-Backed Securities - Residential [Member] | U.S. Government Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	26,000	31,500	32,500
Available-for-Sale	26,600	32,200	33,600
Mortgage-Backed Securities - Residential [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	100,100	139,800	146,700
Available-for-Sale	103,500	143,600	151,600
Corporate and Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	17,027	17,142	17,180
Available-for-Sale	16,756	16,798	16,798
Gross Unrealized Gains	9	10	0
Gross Unrealized Losses	280	354	382
Maturities of Debt Securities, at Amortized Cost
Within One Year	0
From 1 - 5 Years	16,027
From 5 - 10 Years	0
Over 10 Years	1,000
Maturities of Debt Securities at Fair Value
Within One Year	0
From 1 - 5 Years	15,956
From 5 - 10 Years	0
Over 10 Years	800
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	0	7,375	15,998
12 Months or Longer	10,752	6,063	800
Total	10,752	13,438	16,798
Number of Securities in a Continuous Loss Position, in number of securities	15	19	22
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	0	92	182
12 Months or Longer	280	262	200
Total	280	354	382
Mutual Funds and Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	1,120	1,120	1,120
Available-for-Sale	1,277	1,166	1,182
Gross Unrealized Gains	157	46	62
Gross Unrealized Losses	0	0	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	0	0	0
12 Months or Longer	0	0	0
Total	0	0	0
Number of Securities in a Continuous Loss Position, in number of securities	0	0	0
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	0	0	0
12 Months or Longer	0	0	0
Total	$ 0	$ 0	$ 0