Loans and Leases (Details 4) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 130,418	$ 129,019
Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	130,418	129,019
Impaired Financing Receivable Performing Restructured Loans	66,829	40,182
Impaired Financing Receivable, Recorded Investment	197,247	169,201
Consumer Portfolio Segment | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	926	1,531
Impaired Financing Receivable Performing Restructured Loans	229	197
Impaired Financing Receivable, Recorded Investment	1,155	1,728
Commercial Portfolio Segment | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	92,958	69,839
Impaired Financing Receivable Performing Restructured Loans	3,901	5,221
Impaired Financing Receivable, Recorded Investment	96,859	75,060
Real Estate Construction | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	370	372
Impaired Financing Receivable Performing Restructured Loans	7,575	7,631
Impaired Financing Receivable, Recorded Investment	7,945	8,003
Mortgage Loans on Real Estate | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	36,164	57,277
Impaired Financing Receivable Performing Restructured Loans	55,124	27,133
Impaired Financing Receivable, Recorded Investment	$ 91,288	$ 84,410