Debt - Schedule of Maturities of Long-term Debt (Details) - Mortgages - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Amortization
2017, amortization	$ 6,736
2018, amortization	2,880
2019, amortization	2,188
2020, amortization	2,268
2021, amortization	2,350
Thereafter, amortization	7,356
Total, amortization	23,778
Maturities
2017, maturities	336,009
2018, maturities	262,210
2019, maturities	250,000
2020, maturities	0
2021, maturities	0
Thereafter, maturities	742,675
Total, maturities	1,590,894
Total long term debt
2017	342,745
2018	265,090
2019	252,188
2020	2,268
2021	2,350
Thereafter	750,031
Total	$ 1,614,672	$ 1,617,840