EQUITY METHOD INVESTMENTS - Statements of Operations Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
OGC
Schedule Of Equity Method Investments [Line Items]
Total revenues	$ 38,097	$ 37,180	$ 106,825	$ 106,263
Total operating expenses	29,828	31,751	81,651	94,044
Net income (loss)	8,269	5,429	25,167	12,213
OCC
Schedule Of Equity Method Investments [Line Items]
Total revenues	2,267	2,465	6,606	7,024
Total operating expenses	2,536	2,323	8,200	6,422
Net income (loss)	$ (268)	$ (5)	$ (1,594)	$ 116