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Commitments and Contingencies (Details) - USD ($)
1 Months Ended 12 Months Ended
Sep. 16, 2015
May 31, 2014
Jun. 30, 2013
Dec. 31, 2010
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Commitments and Contingencies [Line Items]              
Percent of notes required to be repurchased at the option of the holders       100.00%      
Convertible guaranteed notes payable, net         $ 11,763,000 $ 12,126,000  
Senior Notes [Member]              
Commitments and Contingencies [Line Items]              
Face amount of debt instrument         500,000,000 500,000,000  
Senior Notes [Member] | Senior Notes Due 2024 [Member]              
Commitments and Contingencies [Line Items]              
Face amount of debt instrument         $ 250,000,000 $ 250,000,000  
Debt instrument, interest rate, stated percentage         4.40% 4.40%  
Senior Notes [Member] | Senior Notes Due 2023 [Member]              
Commitments and Contingencies [Line Items]              
Face amount of debt instrument         $ 250,000,000 $ 250,000,000  
Debt instrument, interest rate, stated percentage         4.25% 4.25%  
6% Convertible Guaranteed Note [Member]              
Commitments and Contingencies [Line Items]              
Face amount of debt instrument       $ 115,000,000 $ 11,900,000 $ 12,400,000  
Debt instrument, interest rate, stated percentage         6.00% 6.00% 6.00%
LCIF [Member] | Senior Notes [Member] | Senior Notes Due 2024 [Member]              
Commitments and Contingencies [Line Items]              
Face amount of debt instrument   $ 250,000,000          
Debt Instrument, Redemption Price, Percentage   99.883%          
Debt instrument, interest rate, stated percentage   4.40%          
LCIF [Member] | Senior Notes [Member] | Senior Notes Due 2023 [Member]              
Commitments and Contingencies [Line Items]              
Face amount of debt instrument     $ 250,000,000        
Debt Instrument, Redemption Price, Percentage     99.026%        
Debt instrument, interest rate, stated percentage     4.25%        
LCIF [Member] | 6% Convertible Guaranteed Note [Member]              
Commitments and Contingencies [Line Items]              
Face amount of debt instrument       $ 115,000,000      
Debt instrument, interest rate, stated percentage       6.00%      
Percent of notes required to be repurchased at the option of the holders       100.00%      
Convertible guaranteed notes payable, net         $ 11,900,000    
Bridgewater Hills Corporate Center, LLC [Member]              
Commitments and Contingencies [Line Items]              
Damages sought, value $ 15,500,000