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INVESTMENT SECURITIES - General Information (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Nov. 26, 2019 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Marketable Securities [Line Items] |  |  |  |
Share purchased |  | 155,665 |  |
Purchase price of shares |  | $ 94,851 |  | $ 513
Equity Method Investments |  | 0 | $ 0 |
Investment in Alpine Income Property Trust, Inc. |  | $ 42,041 | 41,037 |
Alpine Income Property Trust, Inc. Common Stock and Alpine Income Property OP, LP Limited Partnership Units |  |  |  |
Marketable Securities [Line Items] |  |  |  |
Number of shares owned |  | 2,200,000 |  |
Investment in Alpine Income Property Trust, Inc. |  | $ 42,041 | $ 41,037 |
Investment ownership percentage (as a percent) |  | 14.60% |  |
Common Stock [Member] |  |  |  |
Marketable Securities [Line Items] |  |  |  |
Share purchased | 421,053 | 979,543 | 8,088 |
Purchase price of shares | $ 8,000 | $ 2,700 | $ 100 |
Investment in Alpine Income Property Trust, Inc. |  | $ 18,690 | 16,511 |
Investment ownership percentage (as a percent) |  | 6.50% |  |
Alpine Income Property OP, LP Limited Partnership Units |  |  |  |
Marketable Securities [Line Items] |  |  |  |
Share purchased |  | 1,223,854 |  |
Investment in Alpine Income Property Trust, Inc. |  | $ 23,351 | $ 24,526 |
Investment ownership percentage (as a percent) |  | 8.10% |  |

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