XML 91 R55.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, Plant, and Equipment, Net (Details) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2018
May 31, 2017
May 31, 2016
Property, plant and equipment      
Property, plant and equipment $ 89,607 $ 93,163  
Less accumulated depreciation and amortization (48,794) (49,652)  
Property, plant and equipment excluding land and land improvements 40,813 43,511  
Land and land improvements 1,648 1,723  
Property, plant and equipment, Net 42,461 45,234  
Depreciation expense 4,600 6,000 $ 8,200
Building and building improvements      
Property, plant and equipment      
Property, plant and equipment 39,887 40,597  
Machinery and equipment      
Property, plant and equipment      
Property, plant and equipment 22,668 25,434  
Computer software and equipment      
Property, plant and equipment      
Property, plant and equipment 24,899 25,668  
Construction in progress      
Property, plant and equipment      
Property, plant and equipment $ 2,153 $ 1,464