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INTANGIBLE ASSETS (Schedule of Information Concerning Intangible Assets with Finite Life) (Details) - USD ($) | Dec. 31, 2024 | Apr. 01, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill, Gross Carrying Value | $ 925,211,000 |  | $ 925,211,000
Goodwill | 1,214,053,000 |  | 925,211,000
Accumulated Amortization, Goodwill | 0 |  | 0
Total estimated amortization expense | 84,563,000 |  |
American National |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | 288,842,000 | $ 288,842,000 | 0
Initial goodwill | 282,300,000 |  |
Core Deposits [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Value | 85,491,000 |  | 85,491,000
Accumulated Amortization | (85,768,000) |  | (68,599,000)
Total estimated amortization expense | 74,133,000 |  | 16,892,000
Core Deposits [Member] | American National |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Value | 74,410,000 |  | 0
Other Intangible Assets [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Value | 3,977,000 |  | 3,977,000
Accumulated Amortization | (3,824,000) |  | (1,686,000)
Total estimated amortization expense | 10,430,000 |  | 2,291,000
Other Intangible Assets [Member] | American National |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Value | $ 10,277,000 |  | $ 0

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