Investment in Joint Venture - Summary of Red Iron (Details) - Red Iron Acceptance, LLC - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Schedule of Equity Method Investments [Line Items]
Revenue	$ 47,569	$ 42,051	$ 35,158
Interest and operating expenses, net	(21,011)	(17,288)	(13,030)
Net income	26,558	24,763	$ 22,128
Finance receivables, net	486,834	446,138
Other assets	3,733	3,449
Total assets	490,567	449,587
Notes payable	419,308	378,128
Other liabilities	17,594	21,366
Partners' capital	53,665	50,093
Total liabilities and partners' capital	$ 490,567	$ 449,587