Investment Securities Investment Securities - Continuous Unrealized Loss Position (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014 security	Dec. 31, 2013 security
Investment Securities Available-for-Sale:
Less than 12 Months, Number	82	91
Less than 12 Months, Fair Value	$ 169,336	$ 141,755
Less than 12 Months, Unrealized Losses	3,174	4,428
12 Months or More, Number	62	55
12 Months or More, Fair Value	30,173	26,955
12 Months or More, Unrealized Losses	1,501	1,716
Investment Securities Held-to-Maturity:
Less than 12 Months, Number	8	7
Less than 12 Months, Fair Value	4,977	5,289
Less than 12 Months, Unrealized Losses	258	286
12 Months or More, Number	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
U.S. Treasury Notes [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	7	3
Less than 12 Months, Fair Value	32,219	12,894
Less than 12 Months, Unrealized Losses	306	290
12 Months or More, Number	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
US Agency Notes [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	26	25
Less than 12 Months, Fair Value	100,721	89,080
Less than 12 Months, Unrealized Losses	2,042	2,880
12 Months or More, Number	2	2
12 Months or More, Fair Value	9,803	9,636
12 Months or More, Unrealized Losses	650	834
US Agency Mortgage-Backed Securities [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	9	9
Less than 12 Months, Fair Value	21,554	17,557
Less than 12 Months, Unrealized Losses	454	575
12 Months or More, Number	19	19
12 Months or More, Fair Value	4,974	5,130
12 Months or More, Unrealized Losses	254	273
Non-Taxable [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	23	37
Less than 12 Months, Fair Value	9,062	15,641
Less than 12 Months, Unrealized Losses	182	398
12 Months or More, Number	32	24
12 Months or More, Fair Value	13,994	10,751
12 Months or More, Unrealized Losses	576	570
Investment Securities Held-to-Maturity:
Less than 12 Months, Number	8	6
Less than 12 Months, Fair Value	4,977	4,890
Less than 12 Months, Unrealized Losses	258	285
12 Months or More, Number	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Taxable [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	7	9
Less than 12 Months, Fair Value	4,032	4,903
Less than 12 Months, Unrealized Losses	135	202
12 Months or More, Number	5	5
12 Months or More, Fair Value	1,254	1,252
12 Months or More, Unrealized Losses	6	12
Investment Securities Held-to-Maturity:
Less than 12 Months, Number	0	1
Less than 12 Months, Fair Value	0	399
Less than 12 Months, Unrealized Losses	0	1
12 Months or More, Number	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Mutual Funds [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	2	2
Less than 12 Months, Fair Value	1,395	1,380
Less than 12 Months, Unrealized Losses	32	39
12 Months or More, Number	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Trust Preferred Securities [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	0	0
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Number	1	2
12 Months or More, Fair Value	49	93
12 Months or More, Unrealized Losses	0	6
Equity Securities [Member]
Investment Securities Available-for-Sale:
Less than 12 Months, Number	8	6
Less than 12 Months, Fair Value	353	300
Less than 12 Months, Unrealized Losses	23	44
12 Months or More, Number	3	3
12 Months or More, Fair Value	99	93
12 Months or More, Unrealized Losses	$ 15	$ 21