Loans, Allowance for Credit Losses and Credit Quality Textual (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2020 USD ($) contract	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Days To Be Termed As Non Accrual Loans		90 days
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) by percentage	21.40%	65.50%
Loans with active Deferrals	$ 1,200,000,000	$ 1,200,000,000
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method		(1,137,000)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		1,157,000
Interest Receivable	32,900,000	32,900,000
Loans and Leases Receivable, Allowance	(112,176,000)	(112,176,000)	$ (67,740,000)	$ (65,960,000)	$ (65,140,000)	$ (64,293,000)
Off-Balance Sheet, Credit Loss, Liability	$ 790,000	790,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	0
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ (19,800,000)	$ (44,400,000)