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FAIR VALUE MEASUREMENTS (Tables)
3 Months Ended
Mar. 31, 2013
Fair Value Disclosures [Abstract]  
Financial Assets and Liabilities Accounted For at Fair Value on Recurring Basis

The Company’s carrying and estimated fair value of debt, at March 31, 2013 and December 31, 2012 were as follows:

 

    March 31, 2013     December 31, 2012  
    Carrying     Fair Value     Carrying     Fair Value  
    Value     Level 1     Level 2     Level 3     Value     Level 1     Level 2     Level 3  
Instrument                                                                
Convertible senior notes   $ 127,822     $ -     $ 183,938     $ -     $ 126,918     $ -     $ 165,563     $ -  
Term loan credit agreement     290,283       -       299,228       -       290,812       -       300,728       -  
Industrial revenue bond     2,463       -       -       2,463       2,500       -       -       2,500  
Capital lease obligations     8,920       -       -       8,920       4,921       -       -       4,921  
    $ 429,488     $ -     $ 483,166     $ 11,383     $ 425,151     $ -     $ 466,291     $ 7,421