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SECURITIES (Available for Sale securities in continuous unrealized loss position) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) holding | Dec. 31, 2020 USD ($) holding | Dec. 31, 2019 USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 37 | 7 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 1,210,544 | $ 24,248 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (21,197) | (89) |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | (1,000) | (1,056) |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (199) | (373) |
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,211,544 | 25,304 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (21,396) | (462) |
Equity Securities, FV-NI, Realized Gain (Loss) | $ 192 | $ 14 | $ 18
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 12 | 3 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 214,678 | $ 437 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (5,534) | (1) |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 | 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position | 214,678 | 437 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (5,534) | $ (1) |
Agency collateralized mortgage obligations [Member] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 1 | 2 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 22,960 | $ 23,323 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (571) | (87) |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 | 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position | 22,960 | 23,323 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (571) | $ (87) |
Single Issuer Trust Preferred Securities Issued By Banks [Member] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding |  | 1 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months |  | $ 488 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | (1) |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer |  | 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position |  | 488 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss |  | $ (1) |
Pooled Trust Preferred Securities Issued By Banks And Insurers [Member] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 1 | 1 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 0 | $ 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | (1,000) | (1,056) |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (199) | (373) |
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,000 | 1,056 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (199) | $ (373) |
US Treasury Securities [Member] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 17 |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 811,993 |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (12,191) |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |  |
Debt Securities, Available-for-sale, Unrealized Loss Position | 811,993 |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (12,191) |  |
US Government Agencies Debt Securities [Member] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 6 |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 160,913 |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (2,901) |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |  |
Debt Securities, Available-for-sale, Unrealized Loss Position | 160,913 |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (2,901) |  |

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