Annual report pursuant to Section 13 and 15(d)

Debt (Details)

v2.4.0.8
Debt (Details) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Mortgage and Other Secured Loans:
Dec. 31, 2012
Mortgage and Other Secured Loans:
Dec. 31, 2013
Fixed rate mortgage loans
Dec. 31, 2012
Fixed rate mortgage loans
Dec. 31, 2013
Variable rate secured loans
Dec. 31, 2012
Variable rate secured loans
Dec. 31, 2013
Other construction loan facilities
Dec. 31, 2012
Other construction loan facilities
Dec. 31, 2013
Revolving Credit Facility
Dec. 31, 2012
Revolving Credit Facility
Sep. 30, 2011
Term Credit Facility Effective September 2011
Dec. 31, 2013
Term Credit Facility Effective September 2011
Feb. 14, 2012
Term Credit Facility Effective February 2012
Dec. 31, 2013
Term Credit Facility Effective February 2012
Aug. 03, 2012
Term Credit Facility Effective August 2012
Dec. 31, 2013
Term Loan Facilities
Dec. 31, 2012
Term Loan Facilities
Apr. 30, 2010
4.25% Exchangeable Senior Notes
Dec. 31, 2013
4.25% Exchangeable Senior Notes
Dec. 31, 2012
4.25% Exchangeable Senior Notes
Dec. 31, 2011
4.25% Exchangeable Senior Notes
Dec. 31, 2013
Unsecured notes payable
Dec. 31, 2012
Unsecured notes payable
Sep. 30, 2011
3.5% Exchangeable Senior Notes
Dec. 31, 2011
3.5% Exchangeable Senior Notes
Sep. 15, 2011
3.5% Exchangeable Senior Notes
Dec. 31, 2013
Construction loans
Fixed rate mortgage loans
Dec. 31, 2013
Senior Notes
May 06, 2013
Senior Notes
3.60% Senior Notes
Dec. 31, 2013
Senior Notes
3.60% Senior Notes
Sep. 15, 2013
Senior Notes
5.250% Senior Notes
Dec. 31, 2013
Senior Notes
5.250% Senior Notes
Sep. 16, 2013
Senior Notes
5.250% Senior Notes
Dec. 31, 2013
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective September 2011
Dec. 31, 2013
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective February 2012
Dec. 31, 2013
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective August 2012
Dec. 31, 2013
Adjusted Treasury [Member]
Senior Notes
3.60% Senior Notes
Dec. 31, 2013
Adjusted Treasury [Member]
Senior Notes
5.250% Senior Notes
Dec. 31, 2013
Revolving Credit Facility
Dec. 31, 2012
Revolving Credit Facility
Dec. 31, 2013
Minimum
Revolving Credit Facility
Dec. 31, 2013
Minimum
Term Loan Facilities
Dec. 31, 2013
Minimum
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective September 2011
Dec. 31, 2013
Minimum
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective February 2012
Dec. 31, 2013
Minimum
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective August 2012
Dec. 31, 2013
Minimum
Revolving Credit Facility
Dec. 31, 2013
Minimum
Revolving Credit Facility
London Interbank Offered Rate (LIBOR)
Dec. 31, 2013
Maximum
Revolving Credit Facility
Dec. 31, 2013
Maximum
Term Loan Facilities
Dec. 31, 2013
Maximum
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective September 2011
Dec. 31, 2013
Maximum
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective February 2012
Dec. 31, 2013
Maximum
London Interbank Offered Rate (LIBOR)
Term Credit Facility Effective August 2012
Dec. 31, 2013
Maximum
Revolving Credit Facility
Dec. 31, 2013
Maximum
Revolving Credit Facility
London Interbank Offered Rate (LIBOR)
Debt                                                                                                                  
Maximum Availability                                                                                   $ 800,000,000 [1]                              
Debt, net 1,927,703,000 2,019,168,000   712,751,000 1,016,446,000 675,060,000 [2],[3] 948,414,000 [2],[3] 37,691,000 38,475,000 0 29,557,000 0 [1] 0 [1]           620,000,000 [1],[4] 770,000,000 [1],[4]   563,000 [1] 230,934,000 [1]   1,700,000 1,788,000       13,900,000     347,244,000   245,445,000                                            
Debt instrument, maximum borrowing capacity                                                           26,200,000.0                                                      
Stated interest rate (as a percent)                                           4.25%     0.00% [5]       3.50%     3.60% 3.60%   5.25% 5.25%                                          
Stated Interest Rates, low end of range (as a percent)           3.96% [6]                                                                                                      
Stated Interest Rates, high end of range (as a percent)           7.87% [6]                                                                                                      
Description of variable rate basis               LIBOR [7]       LIBOR             LIBOR [8]                                   LIBOR LIBOR LIBOR                                    
Variable rate, spread (as a percent)               2.25% [7]                                                                       0.975% 1.10% [8] 1.10% 1.10% 2.10%   0.975% 1.75% 2.60% [8] 2.00% 2.00% 2.60%   1.75%
Line of Credit Facility, Commitment Fee Percentage                                                                                                 0.125%             0.35%  
Unamortized premium included in carrying value           69,000 1,300,000                                                                                                    
Weighted average interest rate (as a percent)           6.14%                         1.79%                                                                            
Interest rate on debt (as a percent)               2.42%                                                                                                  
Additional borrowing capacity available provided there is no default under the agreement                           100,000,000       80,000,000 180,000,000                                                                            
Unamortized discount included in carrying value                                           12,000 9,100,000   761,000 873,000             2,800,000   4,600,000                                            
Expansion right, maximum borrowing capacity                                                                                   1,300,000,000                              
Amount available as a percentage of unencumbered Asset value                                                                                   60.00%                              
Extension option period (in years)                             1 year   1 year                                                 1 year                              
Line of credit facility, extension fee percentage                                                                                   0.15%                              
Remaining borrowing capacity                                                                                   784,600,000                              
Initial amount borrowed                           400,000,000   250,000,000   120,000,000     240,000,000                     347,100,000   245,300,000                                              
Term Facility, Amount Remaining After Partial Early Termination                             250,000,000                                                                                    
Extension fee as a percentage of total availability of the facility                             0.15%   0.15%                                                                                
Exchange rate per $1000 principal amount (in common shares)                                           20.8513                                                                      
Convertible debt principal amount, basis for exchange                                           1,000                                                                      
Exchange price per common share based on exchange rate (in dollars per share)                                           $ 47.96                                                                      
Percentage over the entity's common stock price at the time of issuance which was used to determine the initial exchange rate                                           20.00%                                                                      
Repurchase of notes, percentage of principal paid                                           100.00%             100.00%                                                        
Amount of loans repaid upon entry into Revolving Credit Facility and Term Loan Agreement                                           239,400,000                                                                      
Loss on early extinguishment of debt 27,030,000 943,000 1,639,000                                     25,900,000                                                                      
Principal amount of debt 1,935,718,000 [9]                                         575,000 240,000,000           162,500,000                                                        
Effective interest rate, including amortization of issuance costs (as a percent)                                           6.05%             5.97%       3.70%   5.49%                                            
Interest expense at stated interest rate                                           4,208,000 10,200,000 10,200,000       4,013,000                                                          
Interest expense associated with amortization of discount 1,159,000 3,155,000 5,540,000                                     1,615,000 3,651,000 3,437,000       2,617,000                                                          
Total interest expenses                                           5,823,000 13,851,000 13,637,000       6,630,000                                                          
Debt Instrument, Decrease, Repayments                                                     162,500,000                                                            
Loan amount                                                               350,000,000       250,000,000                                          
Debt issuance as a percentage of principal amount                                                               99.816%   98.783%                                              
Basis points used in determining redemption price prior to maturity                                                                               30.00% 40.00%                                
Redemption percentage within three months of maturity                                                             100.00%                                                    
Weighted average borrowings                                                                                   $ 55,500,000 $ 276,500,000                            
Weighted average interest rate (as a percent)                                                                                   1.74% 2.27%                            
[1] Refer to the paragraphs below for further disclosure.
[2] Several of the fixed rate mortgages carry interest rates that were above or below market rates upon assumption and therefore were recorded at their fair value based on applicable effective interest rates. The carrying values of these loans reflect net unamortized premiums totaling $69,000 at December 31, 2013 and $1.3 million at December 31, 2012.
[3] Includes $13.9 million balance on construction loans with maximum available borrowings of $26.2 million.
[4] As discussed below, we have the ability to borrow an aggregate of an additional $180.0 million under these term loan facilities, provided that there is no default under the facilities and subject to the approval of the lenders.
[5] These notes carry interest rates that were below market rates upon assumption and therefore were recorded at their fair value based on applicable effective interest rates. The carrying value of these notes reflects an unamortized discount totaling $761,000 at December 31, 2013 and $873,000 at December 31, 2012.
[6] The weighted average interest rate on these loans was 6.14% at December 31, 2013.
[7] The interest rate on the loan outstanding was 2.42% at December 31, 2013.
[8] The weighted average interest rate on these loans was 1.79% at December 31, 2013.
[9] Represents scheduled principal amortization and maturities only and therefore excludes net discounts of $8.0 million.