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INVESTMENT SECURITIES - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items] |  |  |
Tax exempt interest income on available-for-sale securities | $ 2,700 | $ 2,400 |
Mortgage Backed Securities and Collateralized Mortgage Obligations |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Weighted average yield | 1.88% |  | 1.82%
US Treasury Notes Securities | Not Designated as Hedging Instrument, Economic Hedge |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Trading securities | $ 19,000 |  |
Unrealized loss on trading securities | $ 700 |  |

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