Notes and Interest Receivable due from Related Parties (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Income, Related Party	$ 22,255	$ 7,930	$ 17
Arlo [Member]
Interest Income, Related Party	3,687	3,680
Cade Boca Raton [Member]
Interest Income, Related Party	1,694	1,656
Domain at The One Forty [Member]
Interest Income, Related Party	3,042	2,525
Flagler Village [Member]
Interest Income, Related Party	9,249	44
Novel Perimeter [Member]
Interest Income, Related Party	3,091	17
Vickers Historic Roswell [Member]
Interest Income, Related Party	$ 1,492	$ 8