Note 22 - Accumulated Other Comprehensive Income ("AOCI") - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Balance		$ 5,522,147		$ 5,402,874		$ 5,181,951
Net current-period other comprehensive income		344		(7,246)		178
Balance		5,411,053		5,522,147		5,402,874
Balance		5,530,245
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance				6,335
Other comprehensive income before reclassifications				3,711
Amounts reclassified from AOCI			[1]	(10,046)	[2]
Net current-period other comprehensive income				(6,335)
Balance						6,335
Balance	[3]
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance		(1,136)		406
Other comprehensive income before reclassifications				(1,542)
Amounts reclassified from AOCI			[1]		[2]
Net current-period other comprehensive income				(1,542)
Balance				(1,136)		406
Balance	[3]
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance		(344)		(975)
Other comprehensive income before reclassifications		437		631
Amounts reclassified from AOCI		(93)	[1]		[2]
Net current-period other comprehensive income		344		631
Balance				(344)		(975)
Balance	[3]	(344)
AOCI Attributable to Parent [Member]
Balance		(1,480)		5,766		5,588
Other comprehensive income before reclassifications		437		2,800
Amounts reclassified from AOCI		(93)	[1]	(10,046)	[2]
Net current-period other comprehensive income		344		(7,246)
Balance				$ (1,480)		$ 5,766
Balance	[3]	$ (344)

[1] Amounts reclassified to Other income, net on the Company's Consolidated Statements of Income.

[2] During the year ended December 31, 2017, the Company was deemed to have substantially liquidated its investment in Canada and as a result, recognized a net cumulative foreign currency translation gain. Amounts were reclassified to the Company's Consolidated Statements of Income as follows (i) $14.8 million of gain was reclassified to Equity in income of other real estate investments, net, and (ii) $4.8 million of loss was reclassified to Equity in income of joint ventures, net.

[3] Represents the balance as adjusted for the impact of change in accounting principles for ASU 2016-01. See Footnote 1 of the Notes to the Consolidated Financial Statements for additional disclosure.