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Note 5 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Oct. 31, 2017
Oct. 31, 2016
Property, plant and equipment, gross $ 122,261 $ 120,047
Less accumulated depreciation 69,342 69,715
Total 52,919 50,332
Land and Land Improvements [Member]    
Property, plant and equipment, gross 2,625 2,398
Building [Member]    
Property, plant and equipment, gross 69,279 67,860
Building Improvements [Member]    
Property, plant and equipment, gross 9,458 8,231
Furniture and Fixtures [Member]    
Property, plant and equipment, gross 5,571 5,788
Equipment, Including Capitalized Software [Member]    
Property, plant and equipment, gross $ 35,328 $ 35,770