Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Lives (Detail)

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Summary of Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Lives (Detail)
 12 Months Ended
Mar. 31, 2013
Buildings [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 40 years
Minimum [Member] | Building improvements [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 5 years
Minimum [Member] | Manufacturing machinery [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 10 years
Minimum [Member] | General equipment [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 5 years
Minimum [Member] | Computer equipment, software, and software development [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 3 years
Minimum [Member] | Office furniture and equipment [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 3 years
Maximum [Member] | Building improvements [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 40 years
Maximum [Member] | Manufacturing machinery [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 20 years
Maximum [Member] | General equipment [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 10 years
Maximum [Member] | Computer equipment, software, and software development [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 7 years
Maximum [Member] | Office furniture and equipment [Member]
  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment useful life 10 years