Quarterly report pursuant to Section 13 or 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
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding 5,429 12,573 13,517 15,277
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 5,116 3,703 5,243 6,386
Restricted stock awards - 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 313 765 344 786
Conversion shares related to the 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 0 8,105 7,930 8,105