v2.4.0.6
Non-Recourse Obligations of Variable Interest Entity (Schedule of Non-recourse Obligations) (Details) (USD $)
12 Months Ended 12 Months Ended 1 Months Ended 0 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Letter of Credit
Dec. 31, 2012
Notes Payable to VIE Members
Dec. 31, 2011
Notes Payable to VIE Members
Dec. 31, 2012
Construction and Term Loan Facility
Dec. 31, 2011
Construction and Term Loan Facility
Dec. 31, 2012
Corporate Debt Securities
Dec. 31, 2011
Corporate Debt Securities
Dec. 31, 2012
LVE
Dec. 31, 2011
LVE
Dec. 31, 2010
LVE
Dec. 31, 2012
LVE
Construction and Term Loan Facility
Dec. 31, 2011
LVE
Construction and Term Loan Facility
Dec. 31, 2007
LVE
Construction and Term Loan Facility
Dec. 31, 2012
LVE
Construction Loans
Jul. 31, 2011
LVE
Corporate Debt Securities
Dec. 31, 2007
LVE
Corporate Debt Securities
Mar. 01, 2013
Echelon Development
Subsequent Event
For the year ending December 31,                                        
Non-recourse obligations of variable interest entity, current $ 225,113,000 $ 29,686,000     $ 33,061,000 $ 29,686,000 $ 119,052,000 $ 0 $ 73,000,000 $ 0                    
Non-recourse debt of variable interest entity, long-term 0 192,980,000         0 119,980,000 0 73,000,000                    
Non-recourse obligations 225,113,000 222,666,000                                    
Assets pledged as security not separately reported                     163,500,000 163,800,000                
Restricted investments held by variable interest entity 21,382,000 21,367,000                 21,400,000                  
Net income (loss) attributable to noncontrolling interest (14,210,000) (4,145,000) 1,940,000               1,500,000 5,900,000 15,200,000              
Net cash provided by operating activities 142,445,000 253,510,000 269,391,000               2,300,000 6,700,000 21,400,000              
Construction and Term Loan Facility                                        
Construction and term loan facility, maximum borrowing capacity                               143,500,000        
Construction and term loan facility, amount outstanding                           119,100,000 120,000,000          
Construction and term loan facility, loan maturities for remainder of current year                                 83,100,000      
Construction and term loan facility, repayments of principal, due in prior year                                 4,200,000      
Face amount                                     100,000,000  
Debt instrument, repayments made                                   27,000,000    
Letter of credit provided by VIE members as collateral on VIE debt       10,000,000                                
Sale of real estate development, consideration received, gross                                       $ 350,000,000