Securities (Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Jun. 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	$ 47,811
Available for sale debt securities maturities 1-5 years amortized cost	156,925
Available for sale debt securities maturities 5-10 years amortized cost	87,202
Available for sale debt securities maturities after 10 years amortized cost	54,408
Available for sale debt securities maturities total amortized cost	$ 346,346
Available for sale debt securities maturities within 1 year weighted average yield	3.67%
Available for sale debt securities maturities 1-5 years weighted average yield	2.99%
Available for sale debt securities maturities 5-10 years weighted average yield	2.85%
Available for sale debt securities maturities after 10 years weighted average yield	1.35%
Available for sale debt securities maturities total weighted average yield	2.79%
Available for sale debt securities maturities within 1 year fair value	$ 49,385
Available for sale debt securities maturities 1-5 years fair value	161,110
Available for sale debt securities maturities 5-10 years fair value	89,606
Available for sale debt securities maturities after 10 years fair value	51,277
Available for sale debt securities fair value	351,378
Held to maturity securities	22,523	$ 25,222
Held to maturity debt securities maturities within 1 year fair value	2,914
Held to maturity debt securities maturities 1-5 years fair value	9,031
Held to maturity debt securities maturities 5-10 years fair value	7,123
Held to maturity debt securities maturities after 10 years fair value	4,023
Held to maturity securities fair value	23,091	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	41,000
Available for sale debt securities maturities 5-10 years amortized cost	20,430
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	$ 61,430
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	1.83%
Available for sale debt securities maturities 5-10 years weighted average yield	2.34%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	2.00%
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	$ 36,933
Available for sale debt securities maturities 1-5 years amortized cost	94,871
Available for sale debt securities maturities 5-10 years amortized cost	53,099
Available for sale debt securities maturities after 10 years amortized cost	23,636
Available for sale debt securities maturities total amortized cost	$ 208,539
Available for sale debt securities maturities within 1 year weighted average yield	3.75%
Available for sale debt securities maturities 1-5 years weighted average yield	3.28%
Available for sale debt securities maturities 5-10 years weighted average yield	2.75%
Available for sale debt securities maturities after 10 years weighted average yield	1.65%
Available for sale debt securities maturities total weighted average yield	3.04%
Held to maturity debt securities maturities within 1 year amortized cost	$ 2,842
Held to maturity debt securities maturities 1-5 years amortized cost	8,809
Held to maturity debt securities maturities 5-10 years amortized cost	6,948
Held to maturity debt securities maturities after 10 years amortized cost	3,924
Held to maturity securities	$ 22,523	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	2.75%
Held to maturity debt securities maturities after 10 years weighted average yield	0.82%
Held to maturity debt securities maturities total weighted average yield	2.57%
Held to maturity securities fair value	$ 23,091	$ 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	5,166
Available for sale debt securities maturities 1-5 years amortized cost	20,851
Available for sale debt securities maturities 5-10 years amortized cost	13,470
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	3.80%
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	3.99%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	3.95%
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	30,772
Available for sale debt securities maturities total amortized cost	$ 30,772
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	1.13%
Available for sale debt securities maturities total weighted average yield	1.13%
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	$ 5,712
Available for sale debt securities maturities 1-5 years amortized cost	203
Available for sale debt securities maturities 5-10 years amortized cost	203
Available for sale debt securities maturities after 10 years amortized cost	0
Available for sale debt securities maturities total amortized cost	$ 6,118
Available for sale debt securities maturities within 1 year weighted average yield	3.04%
Available for sale debt securities maturities 1-5 years weighted average yield	1.63%
Available for sale debt securities maturities 5-10 years weighted average yield	3.21%
Available for sale debt securities maturities after 10 years weighted average yield	0.00%
Available for sale debt securities maturities total weighted average yield	3.00%