Securities (Schedule of Securities with Unrealized Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	$ 16,261	$ 152,318
Less than 12 Months Unrealized Loss	(82)	(1,188)
12 Months or More Fair Value	51,066	139,294
12 Months or More Unrealized Loss	(495)	(3,172)
Total Fair Value	67,327	291,612
Total Unrealized Loss	(577)	(4,360)
U.S. Treasury and Agency Securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	0	0
Less than 12 Months Unrealized Loss	0	0
12 Months or More Fair Value	0	9,898
12 Months or More Unrealized Loss	0	(102)
Total Fair Value	0	9,898
Total Unrealized Loss	0	(102)
Obligations of State and Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	6,627	1,891
Less than 12 Months Unrealized Loss	(76)	(15)
12 Months or More Fair Value	0	356
12 Months or More Unrealized Loss	0	(3)
Total Fair Value	6,627	2,247
Total Unrealized Loss	(76)	(18)
Mortgage-backed Securities - Residential
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	9,634	150,427
Less than 12 Months Unrealized Loss	(6)	(1,173)
12 Months or More Fair Value	51,066	129,040
12 Months or More Unrealized Loss	(495)	(3,067)
Total Fair Value	60,700	279,467
Total Unrealized Loss	(501)	(4,240)
Equity Securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	0	0
Less than 12 Months Unrealized Loss	0	0
12 Months or More Fair Value	0	0
12 Months or More Unrealized Loss	0	0
Total Fair Value	0	0
Total Unrealized Loss	$ 0	$ 0