Loans and Leases (Details 4) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	$ 99,113	$ 79,333
Performing Restructured Loans	16,329	17,701
Total Impaired Loans and Leases	115,442	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	22,383
Performing Restructured Loans	10,292
Total Impaired Loans and Leases	32,675
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	377
Performing Restructured Loans	4,980
Total Impaired Loans and Leases	5,357
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	75,700
Performing Restructured Loans	980
Total Impaired Loans and Leases	76,680
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	653
Performing Restructured Loans	77
Total Impaired Loans and Leases	$ 730
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