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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 01, 2020 USD ($) | Feb. 21, 2017 | Dec. 31, 2019 USD ($) reporting | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |
Reserve requirements of vault cash and/or deposits, included in cash and equivalents |  |  | $ 23,100 |  | $ 15,800
Property, Plant and Equipment [Line Items] |  |  |  |  |
Stockholders' equity note, stock split, conversion ratio |  | 1.5 |  |  |
Number of reporting units | reporting |  |  | 1 |  |
Operating lease right-of-use assets |  |  | $ 9,623 |  |
Operating lease liabilities |  |  | $ 9,651 |  |
Premises | Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Estimated useful live of premises and equipment |  |  | 25 years |  |
Premises | Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Estimated useful live of premises and equipment |  |  | 39 years |  |
Furniture and equipment | Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Estimated useful live of premises and equipment |  |  | 3 years |  |
Furniture and equipment | Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Estimated useful live of premises and equipment |  |  | 7 years |  |
Accounting Standards Update 2016-02 |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Operating lease right-of-use assets |  |  |  | $ 9,000 |
Operating lease liabilities |  |  |  | $ 9,000 |
Subsequent event | Accounting Standards Update 2016-13 | Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Quantitative impact | $ 4,000 |  |  |  |
Subsequent event | Accounting Standards Update 2016-13 | Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Quantitative impact | $ 6,000 |  |  |  |

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