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Debt - Schedule of Maturities of Long-term Debt (Details) - Mortgages [Member] - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
2016 amortization $ 12,387  
2017 amortization 10,070  
2018 amortization 2,880  
2019 amortization 2,188  
2020 amortization 2,268  
Thereafter 9,706  
Total amortization 39,499  
2016 maturities 0  
2017 maturities 355,761  
2018 maturities 262,210  
2019 maturities 290,000  
2020 maturities 0  
Thereafter 692,675  
Total maturities 1,600,646  
2016 12,387  
2017 365,831  
2018 265,090  
2019 292,188  
2020 2,268  
Thereafter 702,381  
Total $ 1,640,145 $ 1,602,062