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PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended
Jan. 31, 2013
PROPERTY, PLANT AND EQUIPMENT [Abstract]  
Property, Plant and Equipment
Property, plant and equipment are stated at cost, net of accumulated depreciation.  Expenditures for maintenance and repairs are charged to expense as incurred.  Renewals and betterments are capitalized (see Note 6). Upon sale or disposal of property, plant and equipment, the applicable amounts of asset cost and accumulated depreciation are removed from the accounts, and the net amount, less any proceeds from sale, is recorded in income. For financial reporting purposes, provisions for depreciation are calculated on a straight-line basis over the following estimated useful lives of the assets:
 
   
Years
 
Buildings and improvements
  10-39 
Machinery and equipment
  5-10 
Furniture and fixtures
  5-7 
Automotive equipment
  3