Annual report pursuant to Section 13 and 15(d)

EQUITY (Antidilutive Securities Excluded from Computation of Earnings per Share) (Details)

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EQUITY (Antidilutive Securities Excluded from Computation of Earnings per Share) (Details)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding 26,943 36,534 34,062
Options to purchase shares of common stock [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding 16,628 24,722 21,429
Restricted stock awards and units - unvested [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding 2,210 3,207 4,028
Warrants [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding 0 500 500
Conversion shares related to 2.875% convertible senior notes [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding 8,105 8,105 8,105
2.875% Convertible Senior Notes Due 2027 [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Interest rate, stated percentage 2.875%