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           Potentially Dilutive Shares (Detail) 
         | 
        3 Months Ended | |
|---|---|---|
| 
           Jun. 30, 2014 
         | 
        
           Jun. 30, 2013 
         | 
      |
| Earnings Per Share [Line Items] | ||
| Potentially dilutive shares | 1,278,131 | 5,665,114 | 
| X | ||||||||||
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- Details 
          
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| X | ||||||||||
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- Definition 
          The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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