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Non-Performing Assets Including Troubled Debt Restructurings (TDR) - concentration of COVID-19 related modifications within the loan portfolio (Details) - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2020
Financing Receivable, Modifications [Line Items]
Loans For Which Payment Relief Has Been Requested	$ 200,005	$ 144,361
% of Outstanding Non-PPP Loans	23.20%	16.40%
CRE | Commercial
Financing Receivable, Modifications [Line Items]
Loans For Which Payment Relief Has Been Requested	$ 190,276	$ 140,132
% of Outstanding Non-PPP Loans	30.40%	21.80%
Home Equity | Consumer
Financing Receivable, Modifications [Line Items]
Loans For Which Payment Relief Has Been Requested	$ 5,890	$ 160
% of Outstanding Non-PPP Loans	6.00%	0.20%
Real estate-residential mortgage
Financing Receivable, Modifications [Line Items]
Loans For Which Payment Relief Has Been Requested	$ 3,839	$ 4,069
% of Outstanding Non-PPP Loans	2.80%	2.90%

X

- Definition

Represents the amount of loans for which payment relief has been requested.

+ References

No definition available.

+ Details

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X

- Definition

Represents percentage of outstanding non PPP loans for which payment relief has been requested.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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