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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Lessor, Lease, Description [Line Items]
Fixed lease income - operating leases	$ 65,984,000	$ 60,637,000	$ 191,286,000	$ 181,066,000
Variable lease income - operating leases	4,040,000	3,172,000	12,102,000	10,017,000
Total revenue	71,399,000	65,025,000	207,041,000	194,574,000
Gain (loss) on sale of real estate and other investments	79,531,000	0	79,531,000	(577,000)
Other property revenue
Lessor, Lease, Description [Line Items]
Other property revenue	$ 1,375,000	$ 1,216,000	$ 3,653,000	$ 3,491,000

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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