Securities (Securities with Unrealized Losses, Presented by Length of Time Securities Have Been in Continuous Unrealized Loss Position) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	$ 42,940	$ 30,371
Less than 12 Months Unrealized Loss	(129)	(216)
12 Months or More Fair Value	176,581	233,538
12 Months or More Unrealized Loss	(2,415)	(5,302)
Total Fair Value	219,521	263,909
Total Unrealized Loss	(2,544)	(5,518)
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	19,920	19,561
12 Months or More Unrealized Loss	(80)	(439)
Total Fair Value	19,920	19,561
Total Unrealized Loss	(80)	(439)
Obligations of State and Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	3,392	3,765
Less than 12 Months Unrealized Loss	(31)	(25)
12 Months or More Fair Value	357	4,298
12 Months or More Unrealized Loss	(3)	(34)
Total Fair Value	3,749	8,063
Total Unrealized Loss	(34)	(59)
Mortgage-backed Securities - Residential
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	39,548	26,606
Less than 12 Months Unrealized Loss	(98)	(191)
12 Months or More Fair Value	156,304	209,679
12 Months or More Unrealized Loss	(2,332)	(4,829)
Total Fair Value	195,852	236,285
Total Unrealized Loss	(2,430)	(5,020)
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