Loans and Leases (Details 4) - USD ($) $ in Thousands	Jun. 30, 2017		Dec. 31, 2016
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	$ 172,576	[1]	$ 170,599
Performing Restructured Loans	55,910	[1]	64,952
Total Impaired Loans and Leases	228,486	[1]	235,551
Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	172,576	[2]	170,599
Total Impaired Loans and Leases	228,486	[3]	235,551
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	70,828	[1]	69,335
Performing Restructured Loans	47,071	[1]	54,750
Total Impaired Loans and Leases	117,899	[1],[3]	124,085
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	0	[1]	364
Performing Restructured Loans	5,840	[1]	6,893
Total Impaired Loans and Leases	5,840	[1],[3]	7,257
Commercial | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	101,276	[1]	100,561
Performing Restructured Loans	2,867	[1]	3,157
Total Impaired Loans and Leases	104,143	[1],[3]	103,718
Consumer | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	472	[1]	339
Performing Restructured Loans	132	[1]	152
Total Impaired Loans and Leases	$ 604	[1],[3]	$ 491

[1] Excludes loans held for sale carried at lower of cost or fair value.

[2] Excludes loans held for sale carried at lower of cost or fair value.

[3] Excludes loans held for sale carried at lower of cost or fair value.