Note 7 - Other Investments (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income (Loss) from Equity Method Investments	$ 10,709	$ 17,403	$ 23,172
Secured Debt	353,945	376,917
Other Real Estate Investments [Member]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	144,089	107,581
Income (Loss) from Equity Method Investments	10,709	17,403	$ 23,172
Preferred Equity Investments [Member]
Equity Method Investments	104,100	69,400
Income (Loss) from Equity Method Investments	11,100	$ 16,900
Secured Debt	$ 231,200
Debt Instrument, Interest Rate, Stated Percentage	8.14%
Preferred Equity Investments [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	2.65%
Preferred Equity Investments [Member] \| Minimum [Member]
Debt Instrument, Term (Year)	1 year
Debt Instrument, Interest Rate, Stated Percentage	4.19%
Preferred Equity Investments [Member] \| Admore PA Property [Member]
Equity Method Investments	$ 33,300
Equity Method Investment, Aggregate Cost	$ 19,600

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of investment in equity method investee and investment in and advance to affiliate.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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