Investment Securities Available for Sale (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	$ 361,641	$ 453,675	$ 498,467
Available-for-Sale	366,848	457,606	501,574
Gross Unrealized Gains	5,656	5,078	5,744
Gross Unrealized Losses	449	1,147	2,637
Available-For-Sale Securities, Pledged as Collateral	228,990	243,769	270,243
Maturities of Debt Securities, at Amortized Cost
Within One Year	51,576
From 1 - 5 Years	281,531
From 5 - 10 Years	25,774
Over 10 Years	1,640
Maturities of Debt Securities at Fair Value
Within One Year	51,770
From 1 - 5 Years	285,860
From 5 - 10 Years	26,577
Over 10 Years	1,440
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	54,488	113,196	253,151
12 Months or Longer	47,726	56,350	5,028
Total	102,214	169,546	258,179
Number of Securities in a Continuous Loss Position, in number of securities	68	165	419
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	64	656	2,418
12 Months or Longer	385	491	219
Total	449	1,147	2,637
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Gains	4	2	0
Gross Unrealized Losses	146	395	1,153
Maturities of Debt Securities, at Amortized Cost
Within One Year	0
From 1 - 5 Years	80,659
From 5 - 10 Years	11,669
Over 10 Years	0
Maturities of Debt Securities at Fair Value
Within One Year	0
From 1 - 5 Years	80,520
From 5 - 10 Years	11,666
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	42,888	60,664	150,048
12 Months or Longer	33,031	33,849	0
Total	75,919	94,513	150,048
Number of Securities in a Continuous Loss Position, in number of securities	24	26	47
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	30	336	1,153
12 Months or Longer	116	59	0
Total	146	395	1,153
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	92,328	136,868	151,199
Available-for-Sale	92,186	136,475	150,046
State and Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	102,456	127,224	131,154
Available-for-Sale	102,862	127,389	130,444
Gross Unrealized Gains	413	306	135
Gross Unrealized Losses	7	141	845
Maturities of Debt Securities, at Amortized Cost
Within One Year	42,106
From 1 - 5 Years	58,160
From 5 - 10 Years	1,550
Over 10 Years	640
Maturities of Debt Securities at Fair Value
Within One Year	42,194
From 1 - 5 Years	58,460
From 5 - 10 Years	1,568
Over 10 Years	640
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	2,860	29,967	80,443
12 Months or Longer	4,223	4,597	4,228
Total	7,083	34,564	84,671
Number of Securities in a Continuous Loss Position, in number of securities	24	107	347
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	0	120	826
12 Months or Longer	7	21	19
Total	7	141	845
Mortgage-Backed Securities - Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	148,672	171,321	197,775
Available-for-Sale	153,770	175,778	203,230
Gross Unrealized Gains	5,143	4,714	5,586
Gross Unrealized Losses	45	257	131
Maturities of Debt Securities, at Amortized Cost
Within One Year	9,470
From 1 - 5 Years	126,647
From 5 - 10 Years	12,555
Over 10 Years	0
Maturities of Debt Securities at Fair Value
Within One Year	9,576
From 1 - 5 Years	130,851
From 5 - 10 Years	13,343
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	8,740	15,190	6,750
12 Months or Longer	1,935	11,841	0
Total	10,675	27,031	6,750
Number of Securities in a Continuous Loss Position, in number of securities	8	13	3
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	34	108	131
12 Months or Longer	11	149	0
Total	45	257	131
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	29,400	31,500	34,100
Available-for-Sale	30,100	32,200	35,100
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	119,300	139,800	163,700
Available-for-Sale	123,700	143,600	168,100
Corporate and Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	17,065	17,142	17,219
Available-for-Sale	16,829	16,798	16,711
Gross Unrealized Gains	15	10	0
Gross Unrealized Losses	251	354	508
Maturities of Debt Securities, at Amortized Cost
Within One Year	0
From 1 - 5 Years	16,065
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	16,029
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	15,910
12 Months or Longer	8,537	6,063	800
Total	8,537	13,438	16,710
Number of Securities in a Continuous Loss Position, in number of securities	12	19	22
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	0	92	308
12 Months or Longer	251	262	200
Total	251	354	508
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	1,201	1,166	1,143
Gross Unrealized Gains	81	46	23
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