Loans and Leases (Investments in TDRs, Segregated by Risk Rating Exposure) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	$ 323,131	$ 341,898
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	127,076	146,848
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (1) - (6) Pass [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	37,861	55,973
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (7) Special Mention [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	18,268	0
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (8) Substandard [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	70,601	90,461
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (9) Doubtful [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	346	414
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (10) Loss [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	$ 0	$ 0