Quarterly report pursuant to sections 13 or 15(d)

Debentures Payable (Detail)

v2.3.0.11
Debentures Payable (Detail) (USD $)
Jun. 30, 2012
Dec. 31, 2011
Debt Instrument [Line Items]    
Senior Convertible Debentures $ 156,213 $ 113,444
Less - Current Maturities (46,333)  
Long-term Debentures 109,880 113,444
6.25% Debenture due 2011
   
Debt Instrument [Line Items]    
Senior Convertible Debentures 31,788 31,788
4.75% Debenture due 2011
   
Debt Instrument [Line Items]    
Senior Convertible Debentures 78,092 81,656
5.0% Note due 2013
   
Debt Instrument [Line Items]    
Senior Convertible Debentures $ 46,333