Note 5 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Thousands	Oct. 31, 2018	Oct. 31, 2017
Property, Plant and Equipment, Net, Ending Balance	$ 20,285	$ 52,919
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance	$ 39,787	69,342
Corporate Headquarters Building [Member]
Property, Plant and Equipment, Net, Ending Balance		34,700
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance		26,400
Land [Member] | Corporate Headquarters Building [Member]
Property, Plant and Equipment, Net, Ending Balance		1,000
Building [Member] | Corporate Headquarters Building [Member]
Property, Plant and Equipment, Net, Ending Balance		$ 60,100