Securities (Securities by Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	$ 49,467
Available for sale debt securities maturities 1-5 years amortized cost	169,301
Available for sale debt securities maturities 5-10 years amortized cost	87,291
Available for sale debt securities maturities after 10 years amortized cost	62,709
Available for sale debt securities maturities total amortized cost	368,768
Available for sale debt securities maturities within 1 year weighted average yield	3.62%
Available for sale debt securities maturities 1-5 years weighted average yield	3.16%
Available for sale debt securities maturities 5-10 years weighted average yield	3.11%
Available for sale debt securities maturities after 10 years weighted average yield	1.45%
Available for sale debt securities maturities total weighted average yield	2.92%
Available for sale debt securities maturities within 1 year fair value	51,123
Available for sale debt securities maturities 1-5 years fair value	174,197
Available for sale debt securities maturities 5-10 years fair value	90,451
Available for sale debt securities maturities after 10 years fair value	60,302
Available for sale debt securities fair value	376,073
Held to maturity securities	26,480	29,905
Held to maturity debt securities maturities within 1 year fair value	3,334
Held to maturity debt securities maturities 1-5 years fair value	10,347
Held to maturity debt securities maturities 5-10 years fair value	8,195
Held to maturity debt securities maturities after 10 years fair value	5,198
Held to maturity securities fair value	27,074	29,865
Obligations of U.S. government-sponsored enterprises [Member]
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	0
Available for sale debt securities maturities 1-5 years amortized cost	31,008
Available for sale debt securities maturities 5-10 years amortized cost	0
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	31,008
Available for sale debt securities maturities within 1 year weighted average yield	0.00%
Available for sale debt securities maturities 1-5 years weighted average yield	1.72%
Available for sale debt securities maturities 5-10 years weighted average yield	0.00%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	1.72%
Mortgage-backed securities issued by US Government-sponsored enterprises [Member]
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	41,207
Available for sale debt securities maturities 1-5 years amortized cost	111,399
Available for sale debt securities maturities 5-10 years amortized cost	63,797
Available for sale debt securities maturities after 10 years amortized cost	31,966
Available for sale debt securities maturities total amortized cost	248,369
Available for sale debt securities maturities within 1 year weighted average yield	3.73%
Available for sale debt securities maturities 1-5 years weighted average yield	3.38%
Available for sale debt securities maturities 5-10 years weighted average yield	2.79%
Available for sale debt securities maturities after 10 years weighted average yield	1.80%
Available for sale debt securities maturities total weighted average yield	3.08%
Held to maturity debt securities maturities within 1 year amortized cost	3,261
Held to maturity debt securities maturities 1-5 years amortized cost	10,120
Held to maturity debt securities maturities 5-10 years amortized cost	8,015
Held to maturity debt securities maturities after 10 years amortized cost	5,084
Held to maturity securities	26,480	29,905
Held to maturity debt securities maturities within 1 year weighted average yield	3.10%
Held to maturity debt securities maturities 1-5 years weighted average yield	3.03%
Held to maturity debt securities maturities 5-10 years weighted average yield	2.82%
Held to maturity debt securities maturities after 10 years weighted average yield	1.02%
Held to maturity debt securities maturities total weighted average yield	2.59%
Held to maturity securities fair value	27,074	29,865
Obligations of states and political subdivisions [Member]
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	2,546
Available for sale debt securities maturities 1-5 years amortized cost	26,690
Available for sale debt securities maturities 5-10 years amortized cost	23,290
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	52,526
Available for sale debt securities maturities within 1 year weighted average yield	3.64%
Available for sale debt securities maturities 1-5 years weighted average yield	3.92%
Available for sale debt securities maturities 5-10 years weighted average yield	3.98%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	3.93%
Trust Preferred Securities [Member]
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	0
Available for sale debt securities maturities 1-5 years amortized cost	0
Available for sale debt securities maturities 5-10 years amortized cost	0
Available for sale debt securities maturities after 10 years amortized cost	30,743
Available for sale debt securities maturities total amortized cost	30,743
Available for sale debt securities maturities within 1 year weighted average yield	0.00%
Available for sale debt securities maturities 1-5 years weighted average yield	0.00%
Available for sale debt securities maturities 5-10 years weighted average yield	0.00%
Available for sale debt securities maturities after 10 years weighted average yield	1.08%
Available for sale debt securities maturities total weighted average yield	1.08%
Corporate bonds [Member]
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	5,714
Available for sale debt securities maturities 1-5 years amortized cost	204
Available for sale debt securities maturities 5-10 years amortized cost	204
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	$ 6,122
Available for sale debt securities maturities within 1 year weighted average yield	2.81%
Available for sale debt securities maturities 1-5 years weighted average yield	1.62%
Available for sale debt securities maturities 5-10 years weighted average yield	3.20%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	2.78%