EQUITY METHOD INVESTMENTS - Statements of Operations Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018	Aug. 31, 2017
OGC
Schedule Of Equity Method Investments [Line Items]
Total revenues	$ 37,180	$ 35,144	$ 106,263	$ 103,302
Total operating expenses	31,751	25,720	94,044	86,046
Net income (loss)	5,429	9,424	12,213	17,258
OCC
Schedule Of Equity Method Investments [Line Items]
Total revenues	2,465	1,814	7,024	5,871
Total operating expenses	2,323	1,877	6,422	6,186
Net income (loss)	$ (5)	$ (204)	$ 116	$ (1,396)