Loans and Leases (Financing receivables, non accrual status) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Receivables [Abstract]
Nonaccrual loans	$ 28,339	$ 38,675
Nonaccrual troubled debt restructured loans	18,749	4,481
Total nonaccrual loans	47,088	43,156
Accruing loans past due 90 days or more	0	0
Performing troubled debt restructured loans	$ 19,371	$ 21,121