Loans and Leases (Financing receivables, non accrual status) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Receivables [Abstract]
Nonaccrual loans	$ 30,282	$ 38,675
Nonaccrual troubled debt restructured loans	2,074	4,481
Total nonaccrual loans	32,356	43,156
Accruing loans past due 90 days or more	454	0
Performing troubled debt restructured loans	$ 24,473	$ 21,121