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INVESTMENT SECURITIES (Schedule of amortized cost and fair value of securities held-to-maturity) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | $ 2,017 | $ 2,760
Total Securities | 2,074 | 2,827
Held-to-maturity Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 2,017 | 2,760
Gross Unrealized/Unrecognized Gains | 57 | 67
Gross Unrealized/Unrecognized Losses |  | 0
Total Securities | 2,074 | 2,827
Held-to-maturity Securities | Residential mortgage securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 2,017 | 2,760
Gross Unrealized/Unrecognized Gains | 57 | 67
Gross Unrealized/Unrecognized Losses |  | 0
Total Securities | $ 2,074 | $ 2,827

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