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Note 12 - Fair Value Measurements (Details) (USD $)
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Note 12 - Fair Value Measurements (Details) [Line Items]      
Marketable Securities $ 75,019,000 [1]   $ 62,766,000 [1]
Asset Impairment Charges 99,952,000 81,546,000  
Cost-method Investments, Other than Temporary Impairment 2,200,000 7,800,000  
Fair Value Inputs, Cap Rate 6.00%    
Fair Value Inputs, Discount Rate 9.10%    
Fair Value, Inputs, Level 1 [Member]
      
Note 12 - Fair Value Measurements (Details) [Line Items]      
Marketable Securities 72,200,000   59,700,000
Impairment of Real Estate 41,000,000    
Fair Value, Inputs, Level 3 [Member]
      
Note 12 - Fair Value Measurements (Details) [Line Items]      
Marketable Securities 2,800,000   3,100,000
Impairment of Real Estate 56,800,000    
Discontinued Operations [Member]
      
Note 12 - Fair Value Measurements (Details) [Line Items]      
Asset Impairment Charges 9,300,000 56,300,000  
Fair Value, Estimate Not Practicable, Carrying (Reported) Amount [Member]
      
Note 12 - Fair Value Measurements (Details) [Line Items]      
Impairment of Real Estate $ 97,800,000 $ 73,700,000  
Minimum [Member]
      
Note 12 - Fair Value Measurements (Details) [Line Items]      
Fair Value Inputs, Cap Rate 5.00%    
Fair Value Inputs, Discount Rate 6.00%    
Maximum [Member]
      
Note 12 - Fair Value Measurements (Details) [Line Items]      
Fair Value Inputs, Cap Rate 15.00%    
Fair Value Inputs, Discount Rate 16.00%    
[1] As of June 30, 2014 and December 31, 2013, the Company determined that $72.2 million and $59.7 million, respectively, of the Marketable securities estimated fair value were classified within Level 1 of the fair value hierarchy and the remaining $2.8 million and $3.1 million, respectively, were classified within Level 3 of the fair value hierarchy.