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Notes Payable
3 Months Ended
Mar. 31, 2014
Debt Disclosure [Abstract]  
Notes Payable
Notes Payable

Our notes payable are summarized as follows:     
 
March 31, 2014
 
December 31, 2013
4.50% Convertible Notes due 2024 (a)
5,402

 
5,402

7.50% Senior Convertible Notes due 2016
55,481

 
55,500

7.50% Senior Exchange Convertible Notes due 2016
44,500

 
44,500


(a) These Notes were tendered and repaid on April 1, 2014, see Note 11--Subsequent Events.

We made interest payments of $3,749 and $3,935 for the three months ended March 31, 2014 and 2013 respectively.