Note 14 - Supplemental Schedule of Non-cash Investing / Financing Activities - Non-cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Proceeds deposited in escrow through sale of real estate interests		$ 89,770
Disposition of real estate interests through the issuance of mortgage receivables	14,700
Disposition of real estate interests by foreclosure of debt	7,444
Forgiveness of debt due to foreclosure	12,415
Surrender of restricted common stock	3,492	5,324
Dividends payable	130,262	124,679	$ 128,892
Capital expenditures accrual	75,760	45,898
Deemed contribution from noncontrolling interest		10,000
Increase in real estate and other assets		325,981
Increase in mortgages payable, other liabilities and noncontrolling interests		258,626
Decrease in real estate and other assets	300,299
Increase in investments in and advances to real estate joint ventures	(62,429)
Decrease in mortgages payable, other liabilities and noncontrolling interests	$ 248,274

Amount of decrease in mortgages payable, other liabilities and non-controlling interests.

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The amount of real estate interest disposed of in connection to the foreclosure of debt.

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The amount of debt forgave due to foreclosure.

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Represents the increase (decrease) in future cash outflow to pay for purchases of fixed assets that have occurred.

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Amount of increase in mortgages payable, other liabilities and non-controlling interests.

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Represents the investments in and advances to real estate joint ventures due to deconsolidation, included in non-cash investing and financing activities.

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No definition available.

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Deemed contribution from noncontrolling interest in noncash investing and financing activities.

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Amount of assets divested during the period through a noncash (or part noncash) transaction.

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The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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

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The amount of accounts receivable that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The value of an asset or business acquired in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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