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 $)
 9 Months Ended
Dec. 31, 2013
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Options Outstanding, Number of Shares 2,600
Options Outstanding,Weighted Average Exercise Price $ 3.26
Options Exercisable, Number of Shares 125
Options Exercisable,Weighted Average Exercise Price $ 3.74
Exercise Price One
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Range of Exercise Price, lower limit $ 2.50
Range of Exercise Price, upper limit $ 2.75
Options Outstanding, Number of Shares 1,160
Options Outstanding,Weighted Average Exercise Price $ 2.60
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 9 months 29 days
Options Exercisable, Number of Shares 30
Options Exercisable,Weighted Average Exercise Price $ 2.75
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 9 months 4 days
Exercise Price Two
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Range of Exercise Price, lower limit $ 2.76
Range of Exercise Price, upper limit $ 2.85
Options Outstanding, Number of Shares 465
Options Outstanding,Weighted Average Exercise Price $ 2.83
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 9 months 4 days
Options Exercisable, Number of Shares 3
Options Exercisable,Weighted Average Exercise Price $ 2.83
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 9 months 4 days
Exercise Price Three
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 3.85
Options Outstanding, Number of Shares 116
Options Outstanding,Weighted Average Exercise Price $ 3.85
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 6 months 29 days
Options Exercisable, Number of Shares 16
Options Exercisable,Weighted Average Exercise Price $ 3.85
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 6 months 29 days
Exercise Price Four
  
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 4 months 24 days
Options Exercisable, Number of Shares 40
Options Exercisable,Weighted Average Exercise Price $ 4.00
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 4 months 24 days
Exercise Price Five
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 4.05
Options Outstanding, Number of Shares 107
Options Outstanding,Weighted Average Exercise Price $ 4.05
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 4 months 24 days
Options Exercisable, Number of Shares 21
Options Exercisable,Weighted Average Exercise Price $ 4.05
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 4 months 24 days
Exercise Price Six
  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Exercise Price $ 4.50
Options Outstanding, Number of Shares 455
Options Outstanding,Weighted Average Exercise Price $ 4.50
Options Outstanding,Weighted Average Remaining Life (Years) 9 years 5 months 12 days
Options Exercisable,Weighted Average Exercise Price $ 4.50
Options Exercisable,Weighted Average Remaining Life (Years)   
Exercise Price Seven
  
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 2 months 27 days
Options Exercisable, Number of Shares 15
Options Exercisable,Weighted Average Exercise Price $ 4.65
Options Exercisable,Weighted Average Remaining Life (Years) 9 years 2 months 27 days