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Net Income (Loss) Per Share Attributable To Common Stockholders (Reconciliation Of Basic To Diluted Weighted Average Common Shares Outstanding) (Details)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Weighted Average Number of Shares Outstanding Reconciliation [Line Items]      
Basic 136,130,000 [1] 122,966,000 116,904,000
Dilutive common stock options 0 [1],[2] 183,000 [2] 190,000 [2]
Contingently issuable - performance shares 0 [1] 180,000 424,000
Convertible notes dilution 0 [1],[3] 2,991,000 [3] 1,697,000 [3]
Diluted 136,130,000 [1] 126,320,000 119,215,000
Stock Options [Member]
      
Weighted Average Number of Shares Outstanding Reconciliation [Line Items]      
Antidilutive securities excluded from computation of earnings per share, amount 135,190 129,918  
Unvested Performance units [Member]
      
Weighted Average Number of Shares Outstanding Reconciliation [Line Items]      
Antidilutive securities excluded from computation of earnings per share, amount 200,360    
Conversion rights [Member]
      
Weighted Average Number of Shares Outstanding Reconciliation [Line Items]      
Antidilutive securities excluded from computation of earnings per share, amount 1,087,401    
[1] (a)The following common share equivalents were excluded from the weighted average diluted shares for the year ended December 31, 2013 because they would have been anti-dilutive to the loss recorded for the period: (i) 135,190 outstanding options to purchase the Company's common stock, (ii) 200,360 common shares attributable to unvested performance awards and (iii) 1,087,401 common shares related to the 2013 redemption of the Convertible Senior Notes, representing the weighted average portion of the year that is not included in the basic weighted average common shares outstanding.
[2] (b)Options to purchase 129,918 shares of the Company's common stock were excluded from the diluted income per share calculations for the year ended December 31, 2012 because they would have been anti-dilutive to the calculation.
[3] (c)Weighted average common shares outstanding have been increased to reflect the dilutive effect that would have resulted if the Convertible Senior Notes had qualified for and been converted during the years ended December 31, 2012 and 2011, respectively.