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INVESTMENT SECURITIES (Schedule of amortized cost and fair value of securities held-to-maturity) (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | $ 467,893 | $ 382,099
Total Securities | 436,800 | 380,100
Held-to-maturity Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 467,893 | 382,099
Gross Unrealized/Unrecognized Gains |  | 410
Gross Unrealized/Unrecognized Losses | (31,068) | (2,401)
Total Securities | 436,825 | 380,108
Held-to-maturity Securities | US Treasury Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 29,821 | 29,811
Gross Unrealized/Unrecognized Gains |  | 6
Gross Unrealized/Unrecognized Losses | (1,332) | (43)
Total Securities | 28,489 | 29,774
Held-to-maturity Securities | U.S. State and Municipal securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 15,995 | 16,055
Gross Unrealized/Unrecognized Gains |  | 299
Gross Unrealized/Unrecognized Losses | (1,553) | 0
Total Securities | 14,442 | 16,354
Held-to-maturity Securities | Residential MBS |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 413,947 | 328,095
Gross Unrealized/Unrecognized Gains |  | 105
Gross Unrealized/Unrecognized Losses | (27,486) | (2,259)
Total Securities | 386,461 | 325,941
Held-to-maturity Securities | Commercial MBS |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 8,130 | 8,138
Gross Unrealized/Unrecognized Gains |  | 0
Gross Unrealized/Unrecognized Losses | (697) | (99)
Total Securities | $ 7,433 | $ 8,039

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