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LOANS AND CREDIT QUALITY - TDRs (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) loan | Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) loan
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan | 5 | 10 | 7 | 26
Recorded investment - TDR | $ 1,947 | $ 2,225 | $ 2,455 | $ 6,695
Related charge-offs - TDR | $ 0 | $ 0 | $ 0 | $ 0
Consumer loans |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan |  | 10 |  | 24
Recorded investment - TDR |  | $ 2,225 |  | $ 4,892
Related charge-offs - TDR |  | $ 0 |  | $ 0
Consumer loans | Single family |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan | 5 |  | 7 |
Recorded investment - TDR | $ 1,947 |  | $ 2,455 |
Related charge-offs - TDR | $ 0 |  | $ 0 |
Commercial and Industrial Sector | Commercial loans |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan |  | 0 |  | 2
Recorded investment - TDR |  | $ 0 |  | $ 1,803
Related charge-offs - TDR |  | $ 0 |  | $ 0
Interest rate reduction |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan | 3 | 4 | 5 | 15
Recorded investment - TDR | $ 807 | $ 1,023 | $ 1,315 | $ 3,236
Related charge-offs - TDR | $ 0 | $ 0 | $ 0 | $ 0
Interest rate reduction | Consumer loans | Single family |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan | 3 | 4 | 5 | 15
Recorded investment - TDR | $ 807 | $ 1,023 | $ 1,315 | $ 3,236
Related charge-offs - TDR | $ 0 | $ 0 | $ 0 | $ 0
Payment restructure |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan | 2 | 6 | 2 | 11
Recorded investment - TDR | $ 1,140 | $ 1,202 | $ 1,140 | $ 3,459
Related charge-offs - TDR | $ 0 | $ 0 | $ 0 | $ 0
Payment restructure | Commercial loans | Owner occupied commercial real estate |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan |  | 0 |  | 1
Recorded investment - TDR |  | $ 0 |  | $ 678
Related charge-offs - TDR |  | $ 0 |  | $ 0
Payment restructure | Commercial loans | Commercial business |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan |  | 0 |  | 1
Recorded investment - TDR |  | $ 0 |  | $ 1,125
Related charge-offs - TDR |  | $ 0 |  | $ 0
Payment restructure | Consumer loans | Single family |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan | 2 | 6 | 2 | 9
Recorded investment - TDR | $ 1,140 | $ 1,202 | $ 1,140 | $ 1,656
Related charge-offs - TDR | $ 0 | $ 0 |  | $ 0
Payment restructure | Commercial and Industrial Sector | Commercial loans |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Number of loan modifications - TDR | loan |  | 0 |  | 2
Recorded investment - TDR |  | $ 0 |  | $ 1,803
Related charge-offs - TDR |  | $ 0 |  | $ 0

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