Securities (Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	$ 39,337
Available for sale debt securities maturities 1-5 years amortized cost	127,426
Available for sale debt securities maturities 5-10 years amortized cost	99,916
Available for sale debt securities maturities after 10 years amortized cost	51,540
Available for sale debt securities maturities total amortized cost	$ 318,219
Available for sale debt securities maturities within 1 year weighted average yield	3.72%
Available for sale debt securities maturities 1-5 years weighted average yield	3.15%
Available for sale debt securities maturities 5-10 years weighted average yield	2.76%
Available for sale debt securities maturities after 10 years weighted average yield	1.37%
Available for sale debt securities maturities total weighted average yield	2.81%
Available for sale debt securities maturities within 1 year fair value	$ 40,952
Available for sale debt securities maturities 1-5 years fair value	131,936
Available for sale debt securities maturities 5-10 years fair value	102,557
Available for sale debt securities maturities after 10 years fair value	48,350
Available for sale debt securities fair value	323,795
Held to maturity securities	21,140	$ 25,222
Held to maturity debt securities maturities within 1 year fair value	2,777
Held to maturity debt securities maturities 1-5 years fair value	8,600
Held to maturity debt securities maturities 5-10 years fair value	6,773
Held to maturity debt securities maturities after 10 years fair value	3,670
Held to maturity securities fair value	21,820	26,008
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	15,100
Available for sale debt securities maturities 5-10 years amortized cost	37,330
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	$ 52,430
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	1.42%
Available for sale debt securities maturities 5-10 years weighted average yield	2.40%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	2.12%
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	$ 34,731
Available for sale debt securities maturities 1-5 years amortized cost	90,071
Available for sale debt securities maturities 5-10 years amortized cost	51,254
Available for sale debt securities maturities after 10 years amortized cost	21,734
Available for sale debt securities maturities total amortized cost	$ 197,790
Available for sale debt securities maturities within 1 year weighted average yield	3.70%
Available for sale debt securities maturities 1-5 years weighted average yield	3.25%
Available for sale debt securities maturities 5-10 years weighted average yield	2.77%
Available for sale debt securities maturities after 10 years weighted average yield	1.66%
Available for sale debt securities maturities total weighted average yield	3.03%
Held to maturity debt securities maturities within 1 year amortized cost	$ 2,690
Held to maturity debt securities maturities 1-5 years amortized cost	8,332
Held to maturity debt securities maturities 5-10 years amortized cost	6,562
Held to maturity debt securities maturities after 10 years amortized cost	3,556
Held to maturity securities	$ 21,140	25,222
Held to maturity debt securities maturities within 1 year weighted average yield	3.11%
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	2.71%
Held to maturity debt securities maturities after 10 years weighted average yield	0.78%
Held to maturity debt securities maturities total weighted average yield	2.56%
Held to maturity securities fair value	$ 21,820	$ 26,008
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	4,606
Available for sale debt securities maturities 1-5 years amortized cost	21,546
Available for sale debt securities maturities 5-10 years amortized cost	10,623
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	$ 36,775
Available for sale debt securities maturities within 1 year weighted average yield	3.83%
Available for sale debt securities maturities 1-5 years weighted average yield	3.96%
Available for sale debt securities maturities 5-10 years weighted average yield	4.01%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	3.96%
Individual name issuer trust preferred debt securities
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	29,806
Available for sale debt securities maturities total amortized cost	$ 29,806
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	1.17%
Available for sale debt securities maturities total weighted average yield	1.17%
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	709
Available for sale debt securities maturities 5-10 years amortized cost	709
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	$ 1,418
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	2.03%
Available for sale debt securities maturities 5-10 years weighted average yield	2.95%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	2.63%