Quarterly report pursuant to sections 13 or 15(d)

Long Term Debt (Parenthetical) (Detail)

v2.4.0.6
Long Term Debt (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Mar. 31, 2012
Long Term Debt Maturities Repayments Of Principal [Line Items]    
Long term debt, discount $ 198 $ 0
Senior Secured Convertible Notes due June 21, 2013
   
Long Term Debt Maturities Repayments Of Principal [Line Items]    
Long term debt, discount 0 1,020
Convertible Note
   
Long Term Debt Maturities Repayments Of Principal [Line Items]    
Long term debt, discount $ 684 $ 1,127