Note 12 - Fair Value Measurements (Details) (USD $)	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Note 12 - Fair Value Measurements (Details) [Line Items]
Marketable Securities	$ 71,009,000	[1]		$ 36,541,000	[1]
Impairment of Real Estate	81,500,000		34,600,000
Fair Value Inputs, Cap Rate	6.00%
Fair Value Inputs, Discount Rate	9.50%
Cost-method Investments [Member]
Note 12 - Fair Value Measurements (Details) [Line Items]
Impairment of Real Estate	7,800,000
Fair Value, Estimate Not Practicable, Carrying (Reported) Amount [Member]
Note 12 - Fair Value Measurements (Details) [Line Items]
Impairment of Real Estate	73,700,000
Discontinued Operations [Member]
Note 12 - Fair Value Measurements (Details) [Line Items]
Impairment of Real Estate	45,800,000		34,200,000
Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Value Measurements (Details) [Line Items]
Marketable Securities	68,000,000			33,400,000
Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Value Measurements (Details) [Line Items]
Marketable Securities	$ 3,300,000			$ 3,400,000

[1] As of June 30, 2013 and December 31, 2012, the Company determined that $68.0 million and $33.4 million, respectively, of the marketable securities estimated fair value were classified within Level 1 of the fair value hierarchy and the remaining $3.3 million and $3.4 million, respectively, were classified within Level 3 of the fair value hierarchy.