Investment in Unconsolidated Affiliates - Summary of Financial Information (Details) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2017	Nov. 30, 2016
Summary balance sheet information:
Current assets		$ 36,090	$ 35,407
Current liabilities		7,648	26,605
SG2 Holdings, North Star Holdings, Lost Hills Blackwell Holdings and Henrietta Holdings
Summary statement of operations information:
Revenue	$ 55,227	178,425	72,099
Operating expenses	37,342	101,284	47,385
Net income	$ 18,187	74,230	24,970
Summary balance sheet information:
Current assets		76,866	45,086
Long-term assets		2,867,709	1,498,820
Current liabilities		11,303	6,250
Long-term liabilities		$ 25,143	$ 12,329