Investments in Unconsolidated Entities (Details 4) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Condensed Statements of Operations and Comprehensive Income:
Revenues	$ 82,663	$ 205,024	$ 276,284	$ 500,727
Cost of revenues	60,660	125,188	209,410	290,894
Other expenses	20,297	18,588	44,584	39,722
Total expenses	80,957	143,776	253,994	330,616
Gain on disposition of loans and REO	11,809	22,753	26,480	31,639
Income (loss) from operations	13,515	84,001	48,770	201,750
Other income	1,502	6,912	80,866	9,497
Income before income taxes	15,017	90,913	129,636	211,247
Income tax provision	151	2,487	349	6,314
Net income including earnings from noncontrolling interests	14,866	88,426	129,287	204,933
Less: (income) loss attributable to noncontrolling interest	(5,855)	(11,009)	(11,937)	(13,089)
Net income (loss) attributable to controlling interest	9,011	77,417	117,350	191,844
Income (loss) from unconsolidated entities	$ 2,564	$ 45,904	$ 41,444	$ 92,349