Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 29, 2016	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Total revenue	$ 8,864	$ 9,954	$ 18,087	$ 6,979	$ 10,380	$ 7,265	$ 6,524	$ 6,682	$ 43,884	$ 30,851
Operating income (loss)	843	3,194	8,671	(86)	3,464	1,089	270	804	12,622	5,627	$ 4,314
Net income (loss)	$ (490)	$ 1,329	$ 4,727	$ (939)	$ 1,339	$ (49)	$ (379)	$ (335)	$ 4,627	$ 576	$ 425
Basic:
Basic net income per common share (in dollars per share)	$ (0.10)	$ 0.27	$ 0.95	$ (0.19)	$ 0.26	$ (0.01)	$ (0.07)	$ (0.07)	$ 0.92	$ 0.11	$ 0.08
Diluted:
Diluted net income per common share (in dollars per share)	$ (0.10)	$ 0.26	$ 0.94	$ (0.19)	$ 0.26	$ (0.01)	$ (0.07)	$ (0.07)	$ 0.92	$ 0.11	$ 0.08
Bloomfield, CT
Diluted:
Revenue from property sales					$ 3,756
Simsbury, CT
Diluted:
Revenue from property sales	$ 900