Annual report pursuant to section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v2.4.0.8
Fair Value Measurements - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
1 Months Ended
May 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]      
Contingent liability   $ 841  
Contingent Liabilities
     
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]      
Contingent liability   841  
Warrant
     
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]      
Fair value of derivative liability $ 473 $ 0 $ 452
Expected life 5 years    
Risk free interest rate 40.00%    
Dividend yield 0.00%    
Volatility 170.00%