Note 6 - Other Investments (Details Textual) $ in Millions	1 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Preferred Equity Investments [Member]
Equity Method Investments	$ 108.3	$ 108.3
Number of Real Estate Properties	49	49
Income (Loss) from Equity Method Investments, Total		$ 8.5	$ 26.8
Equity Method Investment, Realized Gain (Loss) on Disposal, Total		(1.2)	$ 15.9
Preferred Equity Investments [Member] \| San Antonio, Texas [Member]
Payments to Acquire Equity Method Investments		$ 54.9
Preferred Equity Investments [Member] \| Leased Properties [Member]
Number of Real Estate Properties	38	38
Fifth Wall's Climate Technology Fund [Member]
Equity Method Investment, Commitment Amount	$ 25.0	$ 25.0
Payments to Acquire Equity Method Investments	$ 2.3

The commitment amount for equity method investment.

No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

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- Definition

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.

+ References

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- Definition

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

+ References

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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