Non-Covered Loans and Leases (Narrative) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2012
Receivables [Abstract]
Loans and Leases Receivable, Deferred Income, Noncovered	$ 13,500,000
Deferred loan fees	(13,500,000)	495,000	10,800,000
Discounts on acquired loans	287,400,000	3,300,000
Total loans pledged to secure borrowings	8,600,000,000
Outstanding contractual unpaid principal balance of non-covered purchased impaired loans	511,200,000	35,100,000
Carrying balance of non-covered purchased impaired loans	$ 402,544,000	$ 21,900,000