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SECURITIES (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
HTM Securities, Amortized Cost | $ 780,749 | $ 628,000
Moody's AAA/AA/A |  |
HTM Securities, Amortized Cost | 693,070 | 620,873
Moody's Not Rated - Agency |  |
HTM Securities, Amortized Cost | 70,096 | 7,127
Moody's Not Rated - Non-Agency |  |
HTM Securities, Amortized Cost | 17,583 |
U.S. government and agency securities |  |
HTM Securities, Amortized Cost | 2,178 | 2,604
U.S. government and agency securities | Moody's AAA/AA/A |  |
HTM Securities, Amortized Cost | 0 | 0
U.S. government and agency securities | Moody's Not Rated - Agency |  |
HTM Securities, Amortized Cost | 2,178 | 2,604
U.S. government and agency securities | Moody's Not Rated - Non-Agency |  |
HTM Securities, Amortized Cost | 0 |
Obligations of states and political subdivisions |  |
HTM Securities, Amortized Cost | 693,070 | 620,873
Obligations of states and political subdivisions | Moody's AAA/AA/A |  |
HTM Securities, Amortized Cost | 693,070 | 620,873
Obligations of states and political subdivisions | Moody's Not Rated - Agency |  |
HTM Securities, Amortized Cost | 0 | 0
Obligations of states and political subdivisions | Moody's Not Rated - Non-Agency |  |
HTM Securities, Amortized Cost | 0 |
Mortgage-backed securities |  |
HTM Securities, Amortized Cost | 85,501 | 4,523
Mortgage-backed securities | Moody's AAA/AA/A |  |
HTM Securities, Amortized Cost | 0 | 0
Mortgage-backed securities | Moody's Not Rated - Agency |  |
HTM Securities, Amortized Cost | 67,918 | $ 4,523
Mortgage-backed securities | Moody's Not Rated - Non-Agency |  |
HTM Securities, Amortized Cost | $ 17,583 |

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