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Portfolio Loans - Summary of TDRs (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Restructured loans |  |
Total TDRs | $ 3,368 | $ 5,078
In compliance with modified terms |  |
Restructured loans |  |
Total TDRs | 2,083 | 3,814
30-89 days past due |  |
Restructured loans |  |
Total TDRs |  | 15
Non-performing TDRs |  |
Restructured loans |  |
Total TDRs | $ 1,285 | $ 1,249

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