Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 133,372	$ 133,044
Accumulated depreciation	(97,041)	(91,910)
Property, plant and equipment, net	36,331	41,134
Land [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	524	524
Building and Building Improvements [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 20,395	20,395
Building and Building Improvements [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	10 years
Building and Building Improvements [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	26 years
Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 107,732	106,726
Machinery and Equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	8 years
Furniture and Fixtures [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 4,319	4,255
Property, Plant and Equipment, Estimated Useful Lives	10 years
Construction in Progress [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 402	$ 1,144