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) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding 25,451,660 9,355,864 24,317,342 9,531,213
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 9,874,376 311,500 9,874,376 486,849
Restricted and deferred 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 3,713,249 959,089 3,713,249 959,089
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 11,864,035 8,085,275 10,729,717 8,085,275