Quarterly report pursuant to Section 13 or 15(d)

NET LOSS PER SHARE - Narrative (Details)

v3.5.0.2
NET LOSS PER SHARE - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 4.0 4.8
Restricted stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 11.1 13.1
4.50% convertible subordinated notes    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 42.5 42.5
Interest rate, per annum on the principal amount (percent) 4.50%  
Anti-dilutive income excluded from computations $ 0.9 $ 0.9
3.50% convertible subordinated notes    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares)   19.3
Interest rate, per annum on the principal amount (percent)   3.50%