Loans and Leases (Details 4) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	$ 88,527	$ 79,333
Performing Restructured Loans	17,027	17,701
Total Impaired Loans and Leases	105,554	97,034
Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		79,333
Total Impaired Loans and Leases		97,034
Real Estate Mortgage
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	15,194
Performing Restructured Loans	11,355
Total Impaired Loans and Leases	26,549
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		17,845
Performing Restructured Loans		11,484
Total Impaired Loans and Leases		29,329
Real Estate Construction and Land
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	430
Performing Restructured Loans	5,002
Total Impaired Loans and Leases	5,432
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		442
Performing Restructured Loans		5,420
Total Impaired Loans and Leases		5,862
Commercial
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	72,476
Performing Restructured Loans	573
Total Impaired Loans and Leases	73,049
Commercial | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		60,003
Performing Restructured Loans		692
Total Impaired Loans and Leases		60,695
Consumer
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	427
Performing Restructured Loans	97
Total Impaired Loans and Leases	$ 524
Consumer | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		1,043
Performing Restructured Loans		105
Total Impaired Loans and Leases		$ 1,148