Investment Securities Schedule of Held to Maturity Securities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	$ 299,261	$ 239,803
Held-to-maturity Securities, at Fair Value	302,305	248,252
Gross Unrealized Gains	4,786	8,512
Gross Unrealized Losses	1,742	63
Held-to-maturity Securities, Pledged as Collateral	298,261	238,803
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	43,043
From 1 - 5 Years	123,959
From 5 - 10 Years	127,929
Over 10 Years	4,330
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	43,113
From 1 - 5 Years	125,684
From 5 - 10 Years	129,094
Over 10 Years	4,414
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	108,972	21,583
12 Months or Longer	5,111	503
Total	114,083	22,086
Number of Securities in a Continuous Loss Position	137	61
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	1,683	62
12 Months or Longer	59	1
Total	1,742	63
State and Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	198,206	183,373
Held-to-maturity Securities, at Fair Value	202,390	191,196
Gross Unrealized Gains	4,762	7,886
Gross Unrealized Losses	578	63
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	43,043
From 1 - 5 Years	82,001
From 5 - 10 Years	69,832
Over 10 Years	3,330
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	43,113
From 1 - 5 Years	83,896
From 5 - 10 Years	71,967
Over 10 Years	3,414
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	23,633	21,583
12 Months or Longer	5,111	503
Total	28,744	22,086
Number of Securities in a Continuous Loss Position	101	61
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	519	62
12 Months or Longer	59	1
Total	578	63
Mortgage-Backed Securities - Residential [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	100,055
Held-to-maturity Securities, at Fair Value	98,915
Gross Unrealized Gains	24	626
Gross Unrealized Losses	1,164	0
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	0
From 1 - 5 Years	41,958
From 5 - 10 Years	58,097
Over 10 Years	0
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	0
From 1 - 5 Years	41,788
From 5 - 10 Years	57,127
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	85,339	0
12 Months or Longer	0	0
Total	85,339	0
Number of Securities in a Continuous Loss Position	36	0
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	1,164	0
12 Months or Longer	0	0
Total	1,164	0
Mortgage-Backed Securities - Residential [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	95,200	55,430
Held-to-maturity Securities, at Fair Value	94,200	56,056
Mortgage-Backed Securities - Residential [Member] | Agency Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	4,900
Held-to-maturity Securities, at Fair Value	4,700
Corporate and Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	1,000	1,000
Held-to-maturity Securities, at Fair Value	1,000	1,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	0
Over 10 Years	1,000
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	0
Over 10 Years	1,000
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	0	0
12 Months or Longer	0	0
Total	0	0
Number of Securities in a Continuous Loss Position	0	0
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	0	0
12 Months or Longer	0	0
Total	$ 0	$ 0