Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Property, Plant and Equipment [Line Items]
Land and improvements	$ 13,954	$ 13,954	$ 11,416
Buildings and improvements	124,076	124,076	124,406
Machinery and equipment	493,522	493,522	504,785
Furniture and fixtures	22,556	22,556	22,209
Construction in progress	41,964	41,964	40,356
Total, at cost	696,072	696,072	703,172
Accumulated depreciation	379,896	379,896	436,281
Property, Plant and Equipment, Net	316,176	316,176	266,891
Depreciation		43,356	39,389	$ 35,387
Capital equipment included in accounts payable		4,049	4,239	5,604
Assets held for sale reclassified to property, plant and equipment	$ 6,300
Capitalized interest
Property, Plant and Equipment [Line Items]
Interest Costs Capitalized		$ 648	$ 704	$ 636