Investments in Unconsolidated Entities (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Condensed Statements of Operations and Comprehensive Income:
Revenues	$ 117,239	$ 189,714	$ 393,522	$ 690,441
Cost of revenues	93,799	99,102	303,209	389,996
Other expenses	19,880	22,472	64,462	62,193
Total expenses	113,679	121,574	367,671	452,189
Gain on disposition of loans and REO	25,964	7,891	52,444	39,530
Income (loss) from operations	29,524	76,031	78,295	277,782
Other income	25,275	1,678	106,141	11,175
Income before income taxes	54,799	77,709	184,436	288,957
Income tax provision	238	1,138	587	7,453
Net income including earnings from noncontrolling interests	54,561	76,571	183,849	281,504
Less: (income) loss attributable to noncontrolling interest	(16,079)	(3,328)	(28,017)	(16,417)
Net income (loss) attributable to controlling interest	38,482	73,243	155,832	265,087
Income (loss) from unconsolidated entities	$ 12,469	$ 19,925	$ 53,913	$ 112,274