Acquisition Acquisition (Details) (Summit Acquisition [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Locations
Summit Acquisition [Member]
SummitAcquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Equity Interests Issued and Issuable	$ 43.2
Summit Acquisition Total Assets	261.6
Summit Acquisition Total Loans	207.4
Summit Acquisition Total Deposits	232.3
Number Of Locations	2
Goodwill, Acquired During Period	13.3
Finite-lived Intangible Assets Acquired	$ 5.6