Other Income - Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016	Oct. 31, 2016
Other Nonoperating Income By Component [Line Items]
Interest income	$ 989	$ 532	$ 1,930	$ 936
Income from Ancillary Businesses	4,549	3,692	6,846	7,421
Management fee income from unconsolidated entities	3,682	2,408	7,971	4,515
Retained customer deposits	1,308	1,556	3,054	3,669
Income from land sales	1,527	493	5,086	4,491
Other	123	531	56	1,072
Total other income - net	15,110	14,633	27,813	28,353	$ 58,218
Revenues and expenses of non-core ancillary businesses
Revenue	32,056	29,263	60,584	54,132
Expense	27,507	25,571	53,738	46,711
Gibraltar [Member]
Other Nonoperating Income By Component [Line Items]
Gibraltar	$ 2,932	$ 5,421	$ 2,870	$ 6,249