Note 6 - Warranty Costs - Warranty and General Liability Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Balance, beginning of period	$ 88,861	$ 89,905	$ 86,417	$ 89,371
Charges incurred during the period	(4,760)	(7,551)	(6,736)	(11,216)
Changes to pre-existing reserves	1,412	715	1,886	1,070
Balance, end of period	90,025	87,139	90,025	87,139
Selling, General and Administrative Expenses [Member]
Additions	2,409	2,050	4,457	3,991
Cost of Sales [Member]
Additions	$ 2,103	$ 2,020	$ 4,001	$ 3,923