Quarterly report pursuant to Section 13 or 15(d)

Debt (Details Textual)

v2.4.0.8
Debt (Details Textual) (USD $)
1 Months Ended 3 Months Ended 6 Months Ended
Jan. 30, 2013
Rate
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Rate
Jun. 30, 2012
Dec. 31, 2012
Line of Credit Facility [Line Items]            
Fair value changes of derivative instruments, net   $ 12,651,000 $ 23,000 $ (10,898,000) $ 1,140,000  
Weighted average interest rate on the mortgage and other debt payable   4.20%   4.20%   4.50%
Debt (Textual) [Abstract]            
Notes issuance date Jan. 30, 2013          
Advance to Promissory Note 175,000,000          
Interest rate of notes payable 3.00% 3.00%   3.00%   3.00%
Maturity Date       Feb. 01, 2033    
Equivalent redemption price       100.00%    
Convertible senior notes, Description       convertible at any time on or after November 1, 2032, through the second scheduled trading day immediately preceding the maturity date, at the option of the holders    
Common Stock at an initial conversion 141.4827     141.4827    
Principal amount of Notes   1,000   1,000    
Conversion Price   $ 7.07   $ 7.07    
Convertible senior notes redemption date, Description       On or after February 1, 2017 and before February 1, 2019    
Conversion price per share       130.00%    
Number of trading days applicable conversion price       20 days    
Number of consecutive trading days period ending       30 days    
Chile and Spain [Member]
           
Line of Credit Facility [Line Items]            
Number of financial institutions   15   15    
Spain [Member]
           
Line of Credit Facility [Line Items]            
Maturity of mortgages       2015    
Maturity dates of other debts payable       2024    
Maximum [Member]
           
Line of Credit Facility [Line Items]            
Variable interest rates   6.30%   6.30%    
Minimum [Member]
           
Line of Credit Facility [Line Items]            
Variable interest rates   2.70%   2.70%    
Line of Credit [Member]
           
Line of Credit Facility [Line Items]            
Weighted average interest rate on the mortgage and other debt payable   6.40%   6.40%   6.50%
Notes [Member]
           
Line of Credit Facility [Line Items]            
Fair value changes of derivative instruments, net   9,913,000    (14,875,000)     
Notes And Forward Contracts [Member]
           
Line of Credit Facility [Line Items]            
Fair value changes of derivative instruments, net       $ 14,900,000