Note 3 - Real Estate (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Development in Process					$ 229,900
Real Estate Inventory, Capitalized Interest Costs, Ending Balance					31,200
Real Estate Investment Property, Net, Total	$ 9,397,045		$ 9,397,045		9,209,053
Other Assets, Total	214,028		214,028		$ 345,012
Real Estate Inventory, Capitalized Interest Costs Incurred			4,000	$ 3,100
Real Estate Development Projects, Real Estate Taxes and Insurance Capitalized			600	400
Real Estate Development Projects, Payroll Costs Capitalized			1,000	300
Escrow Deposits Related to Property Sales			3,194	0
Asset Impairment Charges, Total	138	$ 17,451	3,112	$ 21,626
Reclassification from Development in Process to Operating Real Estate [Member]
Real Estate Investment Property, Net, Total	228,800		228,800
Reclassification from Development in Process to Other Assets [Member]
Other Assets, Total	$ 1,100		$ 1,100

The amount of payroll costs associated with real estate development projects that has been capitalized.

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- Definition

The amount of real estate taxes and insurance from real estate development projects that has been capitalized.

+ References

No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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-Section 45
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- Definition

The current amount of expenditures for a real estate project that has not yet been completed.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Paragraph 1
-Subparagraph (SX 210.7-03.10)
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- Definition

Escrow deposits related to property sales in noncash investing and financing activities.

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- Definition

Amount of assets classified as other.

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- Definition

Carrying amount as of the balance sheet date of interest costs that were capitalized to properties under development during the land development and construction period of a project, and which are included in inventory.

+ References

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-Paragraph 1
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- Definition

The amount of interest capitalized to an operative builder's inventory during the period.

+ References

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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