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Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 31, 2014
Divisions
Subsidiaries
Jan. 31, 2013
Jan. 31, 2012
Basis of Presentation and Principles of Consolidation      
Number of subsidiaries owned by parent 6    
Number of divisions operated in by Parent 3    
Property, Plant and Equipment [Abstract]      
Capitalized software costs $ 203 $ 7 $ 553
Minimum [Member]
     
Intangible Assets      
Finite-lived intangible assets, useful life, minimum, years 3 years    
Maximum [Member]
     
Intangible Assets      
Finite-lived intangible assets, useful life, minimum, years 20 years    
Building and Improvements [Member] | Minimum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 15 years    
Building and Improvements [Member] | Maximum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 39 years    
Manufacturing Equipment [Member] | Applied Technology [Member] | Minimum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 3 years    
Manufacturing Equipment [Member] | Applied Technology [Member] | Maximum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 5 years    
Manufacturing Equipment [Member] | Engineered Films [Member] | Minimum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 5 years    
Manufacturing Equipment [Member] | Engineered Films [Member] | Maximum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 12 years    
Manufacturing Equipment [Member] | Aerostar [Member] | Minimum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 3 years    
Manufacturing Equipment [Member] | Aerostar [Member] | Maximum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 5 years    
Furniture, Fixtures, Office Equipment and Other [Member] | Minimum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 3 years    
Furniture, Fixtures, Office Equipment and Other [Member] | Maximum [Member]
     
Property, Plant and Equipment [Abstract]      
Property, plant and equipment useful lives 7 years    
Aerostar Integrated Systems [Member]
     
Noncontrolling Interest      
Joint venture, ownership percentage 75.00%