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DESCRIPTION OF BUSINESS (Details) a in Thousands, $ in Thousands, ft² in Millions	9 Months Ended
	Sep. 30, 2025 USD ($) ft² state property loan	Dec. 31, 2024 USD ($) a county	Sep. 30, 2024 a
DESCRIPTION OF BUSINESS
Number of commercial loan investments | loan	4
Investment in Alpine Income Property Trust, Inc. | $	$ 35,022	$ 39,666
Alpine Income Property Trust, Inc. Common Stock and Alpine Income Property OP, LP Limited Partnership Units
DESCRIPTION OF BUSINESS
Investment in Alpine Income Property Trust, Inc. | $	$ 35,022	$ 39,666
Investment ownership percentage (as a percent)	16.10%
Conversion ratio on merger	1
FLORIDA
DESCRIPTION OF BUSINESS
Number of states in which entity operates | county		19
Subsurface area of portfolio of mineral interests | a		352	352
Commercial
DESCRIPTION OF BUSINESS
Number of real estate properties | property	21
Number of states in which entity operates | state	7
Gross leasable space | ft²	5.2
Number of preferred equity investment | property	2

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