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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 | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Financing Receivable, Modifications [Line Items] |  |
Loans For Which Payment Relief Has Been Requested | $ 49,632 | $ 49,063
% of Outstanding Non-PPP Loans | 5.40% | 5.30%
CRE | Commercial |  |
Financing Receivable, Modifications [Line Items] |  |
Loans For Which Payment Relief Has Been Requested | $ 47,501 | $ 47,037
% of Outstanding Non-PPP Loans | 7.10% | 7.00%
Home Equity | Consumer |  |
Financing Receivable, Modifications [Line Items] |  |
Loans For Which Payment Relief Has Been Requested | $ 37 | $ 83
% of Outstanding Non-PPP Loans | 0.00% | 0.10%
Real estate-residential mortgage |  |
Financing Receivable, Modifications [Line Items] |  |
Loans For Which Payment Relief Has Been Requested | $ 2,094 | $ 1,943
% of Outstanding Non-PPP Loans | 1.40% | 1.30%

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- Definition Represents the amount of loans for which payment relief has been requested. + References No definition available. + Details
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