Securities (Securities by Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 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	$ 100,039
Available for sale debt securities maturities 1-5 years amortized cost	147,060
Available for sale debt securities maturities 5-10 years amortized cost	52,463
Available for sale debt securities maturities after 10 years amortized cost	55,481
Available for sale debt securities maturities total amortized cost	355,043
Available for sale debt securities maturities within 1 year weighted average yield	4.28%
Available for sale debt securities maturities 1-5 years weighted average yield	3.71%
Available for sale debt securities maturities 5-10 years weighted average yield	2.90%
Available for sale debt securities maturities after 10 years weighted average yield	1.62%
Available for sale debt securities maturities total weighted average yield	3.42%
Available for sale debt securities maturities within 1 year fair value	102,737
Available for sale debt securities maturities 1-5 years fair value	147,626
Available for sale debt securities maturities 5-10 years fair value	54,176
Available for sale debt securities maturities after 10 years fair value	56,461
Available for sale debt securities fair value	361,000
Held to maturity debt securities maturities total amortized cost	28,889	29,905
Held to maturity debt securities maturities within 1 year fair value	4,269
Held to maturity debt securities maturities 1-5 years fair value	12,249
Held to maturity debt securities maturities 5-10 years fair value	8,321
Held to maturity debt securities maturities after 10 years fair value	4,341
Held to maturity securities fair value	29,180	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	39,487
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	0
Available for sale debt securities maturities total amortized cost	39,487
Available for sale debt securities maturities within 1 year weighted average yield	4.79%
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	0.00%
Available for sale debt securities maturities total weighted average yield	4.79%
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	39,783
Available for sale debt securities maturities 1-5 years amortized cost	102,288
Available for sale debt securities maturities 5-10 years amortized cost	52,054
Available for sale debt securities maturities after 10 years amortized cost	24,757
Available for sale debt securities maturities total amortized cost	218,882
Available for sale debt securities maturities within 1 year weighted average yield	4.00%
Available for sale debt securities maturities 1-5 years weighted average yield	3.68%
Available for sale debt securities maturities 5-10 years weighted average yield	2.90%
Available for sale debt securities maturities after 10 years weighted average yield	2.34%
Available for sale debt securities maturities total weighted average yield	3.40%
Held to maturity debt securities maturities within 1 year amortized cost	4,226
Held to maturity debt securities maturities 1-5 years amortized cost	12,127
Held to maturity debt securities maturities 5-10 years amortized cost	8,238
Held to maturity debt securities maturities after 10 years amortized cost	4,298
Held to maturity debt securities maturities total amortized cost	28,889	29,905
Held to maturity debt securities maturities within 1 year weighted average yield	3.00%
Held to maturity debt securities maturities 1-5 years weighted average yield	2.92%
Held to maturity debt securities maturities 5-10 years weighted average yield	2.72%
Held to maturity debt securities maturities after 10 years weighted average yield	1.11%
Held to maturity debt securities maturities total weighted average yield	2.60%
Held to maturity securities fair value	29,180	29,865
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	20,769
Available for sale debt securities maturities 1-5 years amortized cost	39,057
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	59,826
Available for sale debt securities maturities within 1 year weighted average yield	3.85%
Available for sale debt securities maturities 1-5 years weighted average yield	3.93%
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	3.90%
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	30,724
Available for sale debt securities maturities total amortized cost	30,724
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	1.04%
Available for sale debt securities maturities total weighted average yield	1.04%
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	0
Available for sale debt securities maturities 1-5 years amortized cost	5,715
Available for sale debt securities maturities 5-10 years amortized cost	409
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	$ 6,124
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	2.80%
Available for sale debt securities maturities 5-10 years weighted average yield	2.41%
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%