Debt - Schedule of Maturities of Long-term Debt (Details) - Mortgages - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Amortization
2016, amortization	$ 9,053
2017, amortization	9,904
2018, amortization	2,880
2019, amortization	2,188
2020, amortization	2,268
Thereafter, amortization	9,706
Total, amortization	35,999
Maturities
2016, maturities	0
2017, maturities	336,009
2018, maturities	262,210
2019, maturities	250,000
2020, maturities	0
Thereafter, maturities	742,675
Total, maturities	1,590,894
Total long term debt
2016	9,053
2017	345,913
2018	265,090
2019	252,188
2020	2,268
Thereafter	752,381
Total	$ 1,626,893	$ 1,640,145