Note 6 - Impairments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)		Dec. 31, 2014 USD ($)		Dec. 31, 2013 USD ($)
Note 6 - Impairments (Details) [Line Items]
Asset Impairment Charges	$ 45,464		$ 217,858		$ 190,218
Income Tax Expense (Benefit)	60,230		22,438		32,654
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	21,073		(134,351)
Before Income Tax Benefit and Noncontrolling Interest [Member]
Note 6 - Impairments (Details) [Line Items]
Asset Impairment Charges	30,300		33,300
Before Income Tax Benefit and Noncontrolling Interest [Member] | Two Land Parcels and Four Operating Properties [Member]
Note 6 - Impairments (Details) [Line Items]
Asset Impairment Charges					18,600
Income Tax Benefit Amount [Member]
Note 6 - Impairments (Details) [Line Items]
Income Tax Expense (Benefit)	(5,400)		(6,100)
Income Tax Benefit Amount [Member] | Two Land Parcels and Four Operating Properties [Member]
Note 6 - Impairments (Details) [Line Items]
Income Tax Expense (Benefit)					(7,600)
Noncontrolling Interest Amount [Member]
Note 6 - Impairments (Details) [Line Items]
Income (Loss) Attributable to Noncontrolling Interest	5,600		300
Noncontrolling Interest Amount [Member] | Two Land Parcels and Four Operating Properties [Member]
Note 6 - Impairments (Details) [Line Items]
Income (Loss) Attributable to Noncontrolling Interest					$ 1,000
Land Parcels [Member]
Note 6 - Impairments (Details) [Line Items]
Number of Real Estate Properties					2
Operating Properties [Member]
Note 6 - Impairments (Details) [Line Items]
Number of Real Estate Properties					4
Impairment of Real Estate			178,000
Equity Method Investments [Member]
Note 6 - Impairments (Details) [Line Items]
Impairment of Real Estate	22,200		54,500		$ 29,500
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member] | MEXICO
Note 6 - Impairments (Details) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(92,900)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Note 6 - Impairments (Details) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (18,780)	[1]	(134,351)	[2]
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] | MEXICO
Note 6 - Impairments (Details) [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax			(5,800)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] | MEXICO | Equity in Income of Joint Ventures [Member]
Note 6 - Impairments (Details) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			$ (47,300)

[1] During 2015, the Company recognized a cumulative foreign currency translation loss as a result of the liquidation of the Company's investment in Chile. Amounts were reclassified on the Company's Consolidated Statements of Income as follows (i) $19.6 million of loss was reclassified to Gain on sale of operating properties, net of tax, offset by (ii) $0.8 million of gain was reclassified to Equity in income of joint ventures, net.

[2] During 2014, the Company recognized a cumulative foreign currency translation loss as a result of the substantial liquidation of the Company's investment in Mexico and Peru. Amounts were reclassified on the Company's Consolidated Statements of Income as follows (i) $92.9 million of loss was reclassified to Impairment/loss on operating properties sold, net of tax, within Discontinued operations (ii) $47.3 million of loss was reclassified to Equity in income of joint ventures, net and (iii) $5.8 million of a loss was reclassified to Net income attributable to noncontrolling interest.