Loans and Leases (Details 4) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 127,655	$ 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	127,655	129,019
Impaired Financing Receivable Performing Restructured Loans	71,709	40,182
Impaired Financing Receivable, Recorded Investment	199,364	169,201
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	33,421	57,277
Impaired Financing Receivable Performing Restructured Loans	59,549	27,133
Impaired Financing Receivable, Recorded Investment	92,970	84,410
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	368	372
Impaired Financing Receivable Performing Restructured Loans	7,130	7,631
Impaired Financing Receivable, Recorded Investment	7,498	8,003
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	93,652	69,839
Impaired Financing Receivable Performing Restructured Loans	4,799	5,221
Impaired Financing Receivable, Recorded Investment	98,451	75,060
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	214	1,531
Impaired Financing Receivable Performing Restructured Loans	231	197
Impaired Financing Receivable, Recorded Investment	$ 445	$ 1,728