Note 4 - Dispositions of Real Estate (Details)	12 Months Ended				12 Months Ended			12 Months Ended										12 Months Ended					12 Months Ended									12 Months Ended			12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2012 Outparcel [Member] Initial Dispositions [Member]	Dec. 31, 2012 Operating Properties [Member] Initial Dispositions [Member] USD ($)	Dec. 31, 2013 Operating Properties [Member] Initial Dispositions [Member]	Dec. 31, 2012 Operating Properties [Member] Additional Dispositions [Member] Initial [Member]	Dec. 31, 2012 Outparcel [Member] Initial Dispositions [Member] USD ($)	Dec. 31, 2013 Outparcel [Member] Initial Dispositions [Member]	Dec. 31, 2012 Land Parcels [Member] Additional Dispositions [Member] Seller Financing [Member]	Dec. 31, 2012 Land Parcels [Member]	Dec. 31, 2011 Initial Dispositions [Member] Financing Receivable [Member] Minimum [Member]	Dec. 31, 2011 Initial Dispositions [Member] Financing Receivable [Member] Maximum [Member]	Dec. 31, 2011 Initial Dispositions [Member] Operating Properties [Member]	Dec. 31, 2011 Initial Dispositions [Member] Development Property [Member]	Dec. 31, 2011 Initial Dispositions [Member] Outparcel [Member]	Dec. 31, 2012 Initial Dispositions [Member] After First Six Months 7.5% [Member]	Dec. 31, 2013 Initial Dispositions [Member] USD ($)	Dec. 31, 2012 Initial Dispositions [Member] USD ($)	Dec. 31, 2011 Initial Dispositions [Member] USD ($)	Dec. 31, 2011 Initial Dispositions [Member] Minimum [Member]	Dec. 31, 2011 Initial Dispositions [Member] Maximum [Member]	Dec. 31, 2013 Additional Dispositions [Member] Latin America Portfolio [Member] USD ($)	Dec. 31, 2012 Additional Dispositions [Member] Land Parcels [Member] USD ($)	Dec. 31, 2012 Additional Dispositions [Member] Land Parcels [Member] MXN	Dec. 31, 2011 Disposition by Joint Venture [Member] Noncontrolling Interest [Member] USD ($)	Dec. 31, 2011 Disposition by Joint Venture [Member] USD ($)	Dec. 31, 2011 Transfers [Member] Merchant Building Property [Member] USD ($)	Dec. 31, 2011 Transfers [Member] USD ($)	Dec. 31, 2012 Land Parcels [Member] Seller Financing [Member]	Dec. 31, 2012 Land Parcels [Member] First Six Months 6.5% [Member]	Dec. 31, 2013 Land Parcels [Member] USD ($)	Dec. 31, 2012 Land Parcels [Member] USD ($)	Dec. 31, 2012 Outparcel [Member]	Dec. 31, 2012 Joint Venture in which the Company has a 20% Noncontrolling Interest [Member] USD ($)
Note 4 - Dispositions of Real Estate (Details) [Line Items]
Number of Real Estate Properties				2	62	36			3	1				27	1	1							8							1		9	2	2
Sales of Real Estate					$ 418,900,000													$ 279,500,000	$ 4,100,000	$ 124,900,000			$ 115,400,000	$ 1,900,000	24,300,000		$ 6,100,000	$ 37,600,000	$ 23,900,000			$ 18,200,000			$ 55,500,000
Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax	(48,731,000)	(85,894,000)	(17,327,000)															25,400,000	85,900,000	17,300,000			23,300,000
Impairment of Real Estate	59,600,000							22,500,000										61,900,000		16,900,000			26,900,000
Foreign Currency Transaction Gain (Loss), Realized	0	0	1,600,000																				(7,800,000)
Financing Receivable, Net					4,200,000															11,900,000													1,800,000
Financing Receivable, Stated Interest Rate							6.00%										7.50%														6.50%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners																																			20.00%
Gain (Loss) on Sale of Properties			12,074,000																2,000,000					400,000	5,700,000							11,500,000			10,000,000
Deferred Gain on Sale of Property																												2,100,000	100,000						2,000,000
Number of Transactions																				3
Debt Instrument, Interest Rate, Stated Percentage												5.50%	8.00%
Financing Receivable, Term											6 years										1 year	7 years
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	18,224,000	21,082,000	40,582,000																							100,000	1,400,000
Gain (Loss) on Sale of Properties, before Applicable Income Taxes																												14,200,000	400,000
Sales of Real Estate (in Pesos)					418,900,000													279,500,000	4,100,000	124,900,000			115,400,000	1,900,000	24,300,000		6,100,000	37,600,000	23,900,000			18,200,000			55,500,000
Gain (Loss) on Sale of Properties (in Pesos)			$ 12,074,000																$ 2,000,000					$ 400,000	5,700,000							$ 11,500,000			$ 10,000,000