Allowance for Loan and Lease Losses and Credit Quality - Summary of TDR Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	$ 45,620	$ 127,166
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	18,342	18,818
Consumer Loan Portfolio
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	27,278	108,348
Accruing TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	25,389	98,459
Accruing TDR Loans | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	12,986	12,665
Accruing TDR Loans | Consumer Loan Portfolio
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	12,403	85,794
Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	20,231	28,707
Nonaccrual TDR Loans | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	5,356	6,153
Nonaccrual TDR Loans | Consumer Loan Portfolio
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDR loans	$ 14,875	$ 22,554