Loans and Leases (Details 5) - NonCovered [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 107,190	$ 83,621
Impaired Financing Receivable Performing Restructured Loans	39,956	35,244
Impaired Financing Receivable, Recorded Investment	147,146	118,865
Mortgage Loans on Real Estate [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	31,821	37,612
Impaired Financing Receivable Performing Restructured Loans	27,293	20,245
Impaired Financing Receivable, Recorded Investment	59,114	57,857
Real Estate Construction [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	374	1,559
Impaired Financing Receivable Performing Restructured Loans	7,673	8,996
Impaired Financing Receivable, Recorded Investment	8,047	10,555
Commercial Portfolio Segment [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	71,616	40,965
Impaired Financing Receivable Performing Restructured Loans	4,767	5,744
Impaired Financing Receivable, Recorded Investment	76,383	46,709
Consumer Portfolio Segment [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,379	3,485
Impaired Financing Receivable Performing Restructured Loans	223	259
Impaired Financing Receivable, Recorded Investment	$ 3,602	$ 3,744