Note 6 - Warranty Costs - Warranty and General Liability Reserve (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Balance, beginning of period	$ 129,314	$ 118,013	$ 127,702	$ 121,144
Charges incurred during the period	(19,862)	(7,177)	(26,164)	(16,703)
Changes to pre-existing reserves
Balance, end of period	115,775	117,207	115,775	117,207
Selling, General and Administrative Expenses [Member]
Additions	2,169	2,856	4,338	5,764
Cost of Sales [Member]
Additions	$ 4,154	$ 3,515	$ 9,899	$ 7,002

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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