Quarterly report pursuant to Section 13 or 15(d)

Summary of Options Granted under 2007 Plan (Detail)

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Summary of Options Granted under 2007 Plan (Detail) (2007 Employee, Director and Consultant Stock Plan equity compensation plan, USD $)
 3 Months Ended 12 Months Ended
Jun. 30, 2014
Mar. 31, 2014
2007 Employee, Director and Consultant Stock Plan equity compensation plan
    
Number of Shares    
Beginning Balance 719,670 959,670
Granted      
Vested      
Exercised   (240,000)
Ending Balance 719,670 719,670
Weighted Average Grant Date Fair Value    
Outstanding Weighted Average Grant Date Fair Value Beginning Balance $ 1,158 $ 9.00
Granted      
Vested      
Exercised   $ 9.59
Outstanding Weighted Average Grant Date Fair Value Ending Balance $ 1,158 $ 1,158