Credit Quality Assessment (Summary Information on Allowance for Loan and Lease Loss Activity) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Credit Quality Assessment [Abstract]
Balance at beginning of year			$ 38,766	$ 42,957	$ 42,957
Provision (credit) for loan and lease losses	(192)	1,128	(1,016)	(1,670)
Loan and lease charge-offs			(1,541)	(9,639)
Loan and lease recoveries			1,365	7,774	8,058
Net charge-offs			(176)	(1,865)	(3,107)
Balance at period end	$ 37,574	$ 39,422	$ 37,574	$ 39,422	$ 38,766