Quarterly report pursuant to sections 13 or 15(d)

Exercise Price for Options Outstanding and Options Exercisable (Detail)

v2.4.0.8
Exercise Price for Options Outstanding and Options Exercisable (Detail) (USD $)
 6 Months Ended
Sep. 30, 2013
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Options Outstanding, Number of Shares 1,005
Options Exercisable, Number of Shares 27
Exercise Price One
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 3.85
Options Outstanding, Number of Shares 121
Options Outstanding,Weighted Average Exercise Price $ 3.85
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 10 months 2 days
Options Exercisable, Number of Shares 5
Options Exercisable,Weighted Average Exercise Price $ 3.85
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 10 months 2 days
Exercise Price Two
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 4.00
Options Outstanding, Number of Shares 237
Options Outstanding,Weighted Average Exercise Price $ 4.00
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 7 months 24 days
Exercise Price Three
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 4.05
Options Outstanding, Number of Shares 102
Options Outstanding,Weighted Average Exercise Price $ 4.05
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 7 months 21 days
Options Exercisable, Number of Shares 12
Options Exercisable,Weighted Average Exercise Price $ 4.05
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 7 months 21 days
Exercise Price Four
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 4.50
Options Outstanding, Number of Shares 485
Options Outstanding,Weighted Average Exercise Price $ 4.50
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 8 months 12 days
Exercise Price Five
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 4.65
Options Outstanding, Number of Shares 60
Options Outstanding,Weighted Average Exercise Price $ 4.65
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 5 months 27 days
Options Exercisable, Number of Shares 10
Options Exercisable,Weighted Average Exercise Price $ 4.65
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 5 months 27 days