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Mortgages and Notes Payable (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 5.45% (5.12% effective rate) Mortgage Loan due 2014 [Member] | Dec. 31, 2013 5.68% and 6.48% Mortgage Loans Due 2013 [Member] loans | Dec. 31, 2013 Consolidated Affiliate 5.74% to 5.89% Mortgage Loans Due 2014 [Member] loans | Dec. 31, 2012 5.85% (5.88% effective rate) Notes due 2017 [Member] | Dec. 31, 2012 3.625% (3.752% Effective Rate) Notes Due 2023 [Member] | Dec. 31, 2013 Variable Rate Term Loan due 2016 [Member] | Dec. 31, 2012 Variable Rate Term Loan due 2016 [Member] participants | Dec. 31, 2011 Variable Rate Term Loan due 2016 [Member] | Dec. 31, 2013 Variable Rate Term Loan (1) due 2019 [Member] | Dec. 31, 2012 Variable Rate Term Loan (2) due 2019 [Member] | Dec. 31, 2013 Revolving Credit Facility due 2018 [Member] extensions | Jan. 31, 2014 Revolving Credit Facility due 2018 [Member] | Dec. 31, 2011 Variable Rate Term Loans due 2011 [Member] | Dec. 31, 2012 Variable Rate Construction Loan due 2012 [Member] | Dec. 31, 2012 6.03% Mortgage Loan due 2013 [Member] | Dec. 31, 2012 Variable Rate Term Loan due 2018 [Member] participants | Dec. 31, 2011 7.05% Mortgage Loan due 2012 [Member] | Dec. 31, 2012 Consolidated Affiliate 6.06% Mortgage Loan due 2012 [Member] | Dec. 31, 2013 Secured indebtedness [Member] | Dec. 31, 2012 Secured indebtedness [Member] | Dec. 31, 2013 Secured indebtedness [Member] 5.68% Mortgage Loan due 2013 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 5.68% Mortgage Loan due 2013 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 5.45% (5.12% effective rate) Mortgage Loan due 2014 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 5.45% (5.12% effective rate) Mortgage Loan due 2014 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 5.21% (3.11% effective rate) Mortgage Loan due 2014 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 5.21% (3.11% effective rate) Mortgage Loan due 2014 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 5.17% (6.43% effective rate) Mortage Loan due 2015 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 5.17% (6.43% effective rate) Mortage Loan due 2015 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 3.50% (3.34% effective rate) Mortgage Loan due 2015 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 3.50% (3.34% effective rate) Mortgage Loan due 2015 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 6.88% Mortgage Loan due 2016 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 6.88% Mortgage Loan due 2016 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 7.50% Mortgage Loan due 2016 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 7.50% Mortgage Loan due 2016 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 5.10%(4.22% effective rate) Mortgage Loan due 2017 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 5.10%(4.22% effective rate) Mortgage Loan due 2017 [Member] | Dec. 31, 2013 Secured indebtedness [Member] 5.74% to 9.00% Mortgage Loans due between 2012 and 2016 [Member] | Dec. 31, 2012 Secured indebtedness [Member] 5.74% to 9.00% Mortgage Loans due between 2012 and 2016 [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] 5.85% (5.88% effective rate) Notes due 2017 [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] 5.85% (5.88% effective rate) Notes due 2017 [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] 7.50% Notes due 2018 [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] 7.50% Notes due 2018 [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] 3.625% (3.752% Effective Rate) Notes Due 2023 [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] 3.625% (3.752% Effective Rate) Notes Due 2023 [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] Variable Rate Term Loan due 2016 [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] Variable Rate Term Loan due 2016 [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] Variable Rate Term Loan (1) due 2019 [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] Variable Rate Term Loan (1) due 2019 [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] Variable Rate Term Loan (2) due 2019 [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] Variable Rate Term Loan (2) due 2019 [Member] | Dec. 31, 2013 Unsecured indebtedness [Member] Revolving Credit Facility due 2018 [Member] | Dec. 31, 2012 Unsecured indebtedness [Member] Revolving Credit Facility due 2018 [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgages and notes payable | $ 1,956,299,000 |  | $ 1,859,162,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 488,664,000 | [1] | $ 549,607,000 | [1] | $ 0 | $ 107,289,000 | $ 0 | [2] | $ 67,604,000 | [2] | $ 125,247,000 | [3] | $ 0 | [3] | $ 39,609,000 | [4] | $ 39,805,000 | [4] | $ 37,340,000 | [5] | $ 0 | [5] | $ 109,167,000 | $ 110,671,000 | $ 45,103,000 | $ 45,662,000 | $ 118,126,000 | [6] | $ 120,924,000 | [6] | $ 14,072,000 | [7],[8] | $ 57,652,000 | [7],[8] | $ 1,467,635,000 | $ 1,309,555,000 | $ 379,311,000 | [9] | $ 379,194,000 | [9] | $ 200,000,000 | $ 200,000,000 | $ 247,624,000 | [10] | $ 247,361,000 | [10] | $ 0 | $ 35,000,000 | $ 200,000,000 | [11] | $ 200,000,000 | [11] | $ 225,000,000 | [12] | $ 225,000,000 | [12] | $ 215,700,000 | [13] | $ 23,000,000 | [13]
Scheduled future principal payments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 | 138,763,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 81,232,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 | 158,218,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 | 488,711,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 | 415,437,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thereafter | 673,938,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total scheduled future principal payments | 1,956,299,000 |  | 1,859,162,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 488,664,000 | [1] | 549,607,000 | [1] | 0 | 107,289,000 | 0 | [2] | 67,604,000 | [2] | 125,247,000 | [3] | 0 | [3] | 39,609,000 | [4] | 39,805,000 | [4] | 37,340,000 | [5] | 0 | [5] | 109,167,000 | 110,671,000 | 45,103,000 | 45,662,000 | 118,126,000 | [6] | 120,924,000 | [6] | 14,072,000 | [7],[8] | 57,652,000 | [7],[8] | 1,467,635,000 | 1,309,555,000 | 379,311,000 | [9] | 379,194,000 | [9] | 200,000,000 | 200,000,000 | 247,624,000 | [10] | 247,361,000 | [10] | 0 | 35,000,000 | 200,000,000 | [11] | 200,000,000 | [11] | 225,000,000 | [12] | 225,000,000 | [12] | 215,700,000 | [13] | 23,000,000 | [13]
Aggregate undepreciated book value of secured real estate assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 801,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized premium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000 |  | 700,000 |  |  |  |  |  |  |  | 100,000 |  |  |  |  |  |  |  | 3,600,000 |  | 4,600,000 |  | 300,000 |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  | 500,000 |  |  |  | 2,400,000 |  | 2,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage debt related to consolidated affiliate | 189,432,000 | [14] | 370,393,000 | [14] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity on revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 475,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date on revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jan. 01, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional borrowing capacity on revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 75,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of additional maturity extensions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of optional extensions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | LIBOR plus 110 basis points |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual facility fee (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount outstanding on revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 215,700,000 | 223,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit on revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unused borrowing capacity on revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 259,200,000 | 251,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of loans at maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 52,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early repayment of debt |  |  |  |  |  |  | 114,700,000 | 32,300,000 |  |  | 35,000,000.0 |  |  |  |  |  |  | 10,000,000 |  | 123,000,000 |  | 184,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  | 67,500,000 |  |  |  | 250,000,000 |  |  | 200,000,000 | 200,000,000 | 225,000,000 |  |  |  |  |  | 200,000,000 |  | 20,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of debt instrument (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 5 years | 5 years | 7 years |  |  | 3 years |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of debt instruments repaid |  |  |  |  |  |  | 2 | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Scheduled maturity date |  |  |  |  |  | Jan. 01, 2014 | Dec. 01, 2013 | Jan. 01, 2014 | Mar. 15, 2017 | Jan. 15, 2023 |  | Feb. 01, 2016 |  | Jan. 01, 2019 |  |  |  | Feb. 01, 2012 |  | Mar. 01, 2013 | Jan. 01, 2018 | Jan. 01, 2012 | Oct. 01, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis |  |  |  |  |  |  |  |  |  |  |  |  | LIBOR plus basis points | LIBOR plus basis points | LIBOR plus basis points |  |  |  |  |  | LIBOR plus basis points |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread |  |  |  |  |  | 5.12% | 5.75% | 5.79% | 5.85% | 3.625% |  |  | 2.20% | 1.20% | 1.90% | 1.10% |  | 3.90% | 1.07% | 6.03% | 1.65% | 7.05% | 6.06% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current interest rate (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.37% |  |  |  | 3.43% |  |  |  | 1.27% |  |  |
Gross book value of unencumbered real estate assets | 147,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual repayments through principal amortization | 11,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of debt (in hundredths) |  |  |  |  |  |  |  |  | 107.50% | 98.94% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective percentage rate (in hundredths) |  |  |  |  |  |  |  |  |  | 3.752% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original issuance discount |  |  |  |  |  |  |  |  |  | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred financing fees |  |  |  |  |  |  |  |  |  | 2,100,000 |  |  |  | 400,000 |  |  |  |  |  |  | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of participant changes |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount related to change in participants |  |  |  |  |  |  |  |  |  |  |  | 35,000,000 |  |  |  |  |  |  |  |  | 35,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of early debt repayment for participant changes |  |  |  |  |  |  |  |  |  |  |  | Feb. 25, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of repurchased debt |  |  |  |  |  |  |  |  | 12,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Penalty incurred on early repayment of debt | (199,000) |  | (973,000) |  | (24,000) |  | (100,000) |  | 1,000,000 |  | (200,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lender covenant compliance to accelerate outstanding borrowings | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Holders covenant compliance of bonds | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Uncured covenant compliance default period | 60 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capitalized Interest [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capitalized Interest | $ 2,700,000 |  | $ 1,000,000 |  | $ 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | The secured mortgage loans payable are collateralized by real estate assets with an aggregate undepreciated book value of $801.7 million at December 31, 2013. Our fixed rate mortgage loans generally are either locked out to prepayment for all or a portion of their term or are prepayable subject to certain conditions including prepayment penalties.
[2] | Net of unamortized fair market premium of $0.2 million as of December 31, 2012. This debt was repaid in 2013.
[3] | Net of unamortized fair market value premium of $0.7 million as of December 31, 2013.
[4] | Net of unamortized fair market value discount of $0.8 million and $1.2 million as of December 31, 2013 and 2012, respectively.
[5] | Net of unamortized fair market value premium of $0.1 million as of December 31, 2013.
[6] | Net of unamortized fair market premium of $3.6 million and $4.6 million as of December 31, 2013 and 2012, respectively.
[7] | Net of unamortized fair market value premium of $0.3 million and $0.5 million at December 31, 2013 and 2012, respectively.
[8] | Included mortgage debt related to Markel of $33.1 million at December 31, 2012. This debt was repaid in 2013.
[9] | Net of unamortized original issuance discount of $0.4 million and $0.5 million at December 31, 2013 and 2012, respectively.
[10] | Net of unamortized original issuance discount of $2.4 million and $2.6 million at December 31, 2013 and 2012, respectively.
[11] | The interest rate is 1.37% at December 31, 2013.
[12] | As more fully described in Note 7, we entered into floating-to-fixed interest rate swaps that effectively fix LIBOR for the full amount and duration of this loan. Accordingly, the equivalent fixed rate of this loan is 3.43%.
[13] | The interest rate is 1.27% at December 31, 2013.
[14] | Our share of scheduled future principal payments, including amortization, due on mortgages and notes payable at December 31, 2013 is as follows:2014$11,011201599220161,062201727,082201819,397Thereafter4,880 $64,424 All of this joint venture debt is non-recourse to us except in the case of customary exceptions pertaining to such matters as misuse of funds, environmental conditions, material misrepresentations and voluntary or uncontested involuntary bankruptcy events.

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