Acquisitions (Narrative) (Details) (USD $)	Dec. 31, 2013	Nov. 06, 2013 Bank of America, National Association [Member] branch	Oct. 31, 2013 Bank of America, National Association [Member] branch
Business Acquisition [Line Items]
Number of branches acquired (in branches)		40	11
Deposits acquired		$ 1,300,000,000
Loans acquired		9,000,000
Property and equipment, net	17,476,000	16,000,000
Premium on deposits		2.60%
Cash and cash equivalents	$ 1,280,077,000	$ 1,300,000,000