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Portfolio Loans and allowance for credit losses - Analysis of loans past due and still accruing or non-accrual status (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Loans past due |  |
90+Days | $ 1,149 | $ 1,371
Non-accrual Loans | 21,706 | 22,930
30 to 59 Days |  |
Loans past due |  |
Loans past due, still accruing | 6,685 | 6,794
60 to 89 Days |  |
Loans past due |  |
Loans past due, still accruing | 3,244 | 784
Commercial |  |
Loans past due |  |
Non-accrual Loans | 7,949 | 8,523
Commercial | 30 to 59 Days |  |
Loans past due |  |
Loans past due, still accruing | 52 | 243
Commercial | 60 to 89 Days |  |
Loans past due |  |
Loans past due, still accruing | 2,614 |
Commercial real estate |  |
Loans past due |  |
Non-accrual Loans | 5,164 | 5,503
Commercial real estate | 30 to 59 Days |  |
Loans past due |  |
Loans past due, still accruing | 4,377 |
Real estate construction |  |
Loans past due |  |
Non-accrual Loans |  | 1
Real estate construction | 30 to 59 Days |  |
Loans past due |  |
Loans past due, still accruing |  | 237
Real estate construction | 60 to 89 Days |  |
Loans past due |  |
Loans past due, still accruing |  | 235
Retail Real Estate |  |
Loans past due |  |
90+Days | 1,149 | 1,305
Non-accrual Loans | 8,495 | 8,799
Retail Real Estate | 30 to 59 Days |  |
Loans past due |  |
Loans past due, still accruing | 2,248 | 6,248
Retail Real Estate | 60 to 89 Days |  |
Loans past due |  |
Loans past due, still accruing | 621 | 400
Retail Other |  |
Loans past due |  |
90+Days |  | 66
Non-accrual Loans | 98 | 104
Retail Other | 30 to 59 Days |  |
Loans past due |  |
Loans past due, still accruing | 8 | 66
Retail Other | 60 to 89 Days |  |
Loans past due |  |
Loans past due, still accruing | $ 9 | $ 149

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