Quarterly report pursuant to sections 13 or 15(d)

Debt - Additional Information (Detail)

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Debt - Additional Information (Detail) (USD $)
 1 Months Ended 9 Months Ended
Jun. 21, 2010
Dec. 31, 2012
Mar. 31, 2012
Debt Instrument [Line Items]      
Warrant, exercise price per share   0.70  
Discount on notes   $ 198,000 $ 0
Short term debt, discount   393,000 0
Total consideration payable in cash and shares of stock, gross   1,000,000  
Senior Secured Convertible Notes due June 21, 2013
      
Debt Instrument [Line Items]      
Principal amount of note 2,500,000 2,902,000  
Debt Instrument Maturity Period 3 years    
Interest rate of senior secured note 10.00%    
Conversion price $ 0.15 $ 0.15  
Warrant, exercise price per share   0.25  
Debt conversion description   For each $1 of New Senior Secured Notes purchased, the purchaser received a Warrant to purchase 3.33 shares of common stock of the Company  
Warrant term   5 years  
Convertible Senior Secured Notes purchased   1  
Warrant issued to purchase common stock   3.33  
Fair value of convertible note warrant 1,678,000    
Expected Life 5 years    
Risk Free Interest Rate 2.05%    
Dividend Yield 0.00%    
Volatility Rate 54.62%    
Value of the beneficial conversion feature 5,833,000    
Conversion Value Of Notes 2,500,000    
Discount on notes   0 1,020,000
Discount amortized as interest and financing costs   627,000  
Short term debt, discount   393,000 0
Shares of common stock, issuable up on conversion   19,344,792  
Amount by which if-converted value exceeds the principal   11,607,000  
Accrued interest   297,000  
Senior Secured Convertible Notes due June 21, 2013 | Maximum
      
Debt Instrument [Line Items]      
Discount on notes $ 2,500,000