| 
           Pro Forma Financial Information (Detail) (Mirror Image International Holdings Pvt Ltd, USD $) 
        In Thousands, except Per Share data, unless otherwise specified  | 
        6 Months Ended | |
|---|---|---|
| 
           Sep. 30, 2013 
         | 
        
           Sep. 30, 2012 
         | 
      |
| 
           Mirror Image International Holdings Pvt Ltd 
         | 
        ||
| Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] | ||
| Revenues | $ 12,553 | $ 9,314 | 
| Cost of goods sold | 7,462 | 4,822 | 
| Gross profit | 5,091 | 4,492 | 
| Operating expenses | 12,514 | 10,205 | 
| Income/(loss) from operations | (7,423) | (5,713) | 
| Non-operating expense | 2,533 | 1,186 | 
| Income/(loss) before provision for income taxes | (9,956) | (6,899) | 
| Provision for income taxes | 106 | 74 | 
| Net income/(loss) | $ (10,062) | $ (6,973) | 
| Basic and diluted earnings per share | $ (0.44) | $ (0.41) | 
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          Business Acquisition, Pro Forma, Cost of Goods Sold No definition available. 
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          Business Acquisition Pro Forma Earnings Per Share Basic And Diluted No definition available. 
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          Business Acquisition, Pro Forma Gross Profit No definition available. 
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          Business Acquisition, Pro Forma, Income Before Taxes No definition available. 
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          Business Acquisition, Pro Forma Operating Income (Loss) No definition available. 
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          Business Acquisitions, Pro Forma, Income Tax Expense (Benefit) No definition available. 
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          Business Acquisitions, Pro Forma, Nonoperating Income (Expense) No definition available. 
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- Definition 
          Business Acquisitions, Pro Forma, Operating Expenses No definition available. 
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- Details 
          
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- Definition 
          The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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