Mortgages Payable (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Add: Unamortized fair value debt adjustment	$ 2,204	$ 2,638
Subtract: Deferred financing costs	(11,444)	$ (9,245)
ARIUM Grandewood [Member]
Debt Disclosure [Abstract]
2019	7,365
2020	30,753
2021	15,905
2022	91,472
2023	221,215
Thereafter	848,666
Long-term Debt	1,215,376
Add: Unamortized fair value debt adjustment	2,204
Subtract: Deferred financing costs	(11,444)
Total	$ 1,206,136

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