Allowance for Loan and Lease Losses Allowance for Loan and Lease Losses (Schedule of Credit Losses Related to Covered Financing Receivables, Current) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Covered Loans	Dec. 31, 2012 Covered Loans	Dec. 31, 2011 Covered Loans
Schedule of Allowance for Loan Losses Related to Covered Financing Receivables, Current [Line Items]
Loans and Leases Receivable, Allowance, Covered			$ 44,027	$ 43,255	$ 36,417
Provision for Loan Losses Before Benefit Attributable to FDIC Loss Share Agreements			23,892	35,450
Benefit Attributable to FDIC Loss Share Agreements			(10,790)	(14,728)
Provision for Loan Lease and Other Losses Covered	20,722	20,353	13,102	20,722
Increase in Indemnification Asset			10,790	14,728
Allowance for Loan and Lease Losses, Write-offs			$ (23,120)	$ (28,612)