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LOANS AND CREDIT QUALITY - TDR Re-defaults (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) loan | Sep. 30, 2020 USD ($) loan | Sep. 30, 2021 USD ($) loan | Sep. 30, 2020 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of TDR loan relationships that re-defaulted | loan | 2 | 6 | 8 | 16
Recorded investment | $ | $ 422 | $ 1,038 | $ 2,442 | $ 3,237
Consumer loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of TDR loan relationships that re-defaulted | loan |  |  | 7 | 16
Recorded investment | $ |  |  | $ 1,764 | $ 3,237
Consumer loans | Single family |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of TDR loan relationships that re-defaulted | loan | 2 | 6 | 7 | 16
Recorded investment | $ | $ 422 | $ 1,038 | $ 1,764 | $ 3,237
Commercial loans | Commercial and Industrial Sector |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of TDR loan relationships that re-defaulted | loan |  |  | 1 | 0
Recorded investment | $ |  |  | $ 678 | $ 0
Commercial loans | Owner occupied commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of TDR loan relationships that re-defaulted | loan |  |  | 1 | 0
Recorded investment | $ |  |  | $ 678 | $ 0

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