XML 55 R27.htm IDEA: XBRL DOCUMENT v3.2.0.727
Indebtedness (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Aug. 09, 2015
Dec. 31, 2014
Indebtedness            
Unsecured revolving credit facility $ 319,000   $ 319,000     $ 18,000
Convertible senior unsecured notes 8,478   8,478     $ 8,478
Unsecured revolving credit facility            
Indebtedness            
Unsecured revolving credit facility 319,000   319,000      
Unsecured revolving credit facility maximum borrowing capicity $ 750,000   $ 750,000      
Extendable term of credit facility     1 year      
Debt instrument, interest rate description     LIBOR      
Margin over base rate, in basis points (as a percent)     1.10%      
Interest rate payable for facility fees (as a percent)     0.20%      
Interest rate (as a percent) 1.29%   1.29%      
Weighted average interest rate for borrowings (as a percent) 1.28% 1.25% 1.28% 1.25%    
Unsecured revolving credit facility | Subsequent event            
Indebtedness            
Unsecured revolving credit facility         $ 334,000  
Unsecured term loan            
Indebtedness            
Unsecured term loan outstanding $ 400,000   $ 400,000      
Debt instrument, interest rate description     LIBOR      
Margin over base rate, in basis points (as a percent)     1.20%      
Interest rate (as a percent) 1.38%   1.38%      
Weighted average interest rate for borrowings (as a percent) 1.38% 1.35% 1.38% 1.36%    
Unsecured senior notes            
Indebtedness            
Unsecured senior notes $ 2,425,000   $ 2,425,000      
Revolving credit facility and term loan            
Indebtedness            
Maximum borrowing capacity that may be increased 2,300,000   2,300,000      
Convertible Senior Notes, due 2027 at 3.8%            
Indebtedness            
Convertible senior unsecured notes $ 8,478   $ 8,478