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Cash Dividends (Tables)
 9 Months Ended
Sep. 30, 2014
Stockholders' Equity Note [Abstract]  
Schedule of Conversion Rates for Convertible Notes
In connection with the September 12, 2014, dividend payment, the conversion rates for our convertible notes adjusted as follows:
 
Convertible Notes
 
Conversion Rate per $1,000 Principal Amount
 
Approximate Conversion Price Per Common Share
 
Effective Date
Series 2012 Notes
 
191.671

 
$
5.22

 
September 3, 2014
May 2015 Notes
 
167.9812

 
$
5.95

 
September 3, 2014