Quarterly report pursuant to sections 13 or 15(d)

Summary of Options Granted (Detail)

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Summary of Options Granted (Detail) (2011 Equity Incentive Plan, USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Jun. 30, 2013
2011 Equity Incentive Plan
 
Number of Shares  
Granted 873
Canceled   
Forfeited   
Exercised   
Ending Balance 873
Exercisable, June 30, 2013 3
Weighted average exercise price  
Granted $ 4.31
Canceled   
Forfeited   
Exercised   
Ending Balance $ 4.31
Exercisable, June 30, 2013 $ 4.05