EARNINGS (LOSS) PER SHARE (''EPS'') (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended						3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Participating securities	Jun. 30, 2013 Participating securities	Jun. 30, 2014 4.375% convertible notes due 2014 ("4.375% Convertible Notes")	Jun. 30, 2009 4.375% convertible notes due 2014 ("4.375% Convertible Notes")	Jun. 30, 2013 Stock option awards
Computation of Basic and Diluted EPS:
Net loss	$ (35,403)	$ (61,914)
Weighted average shares outstanding - basic and diluted	79,369,000	86,992,000
Basic and diluted earnings (loss) per share (in dollars per share)	$ (0.45)	$ (0.71)
Antidilutive shares
Antidilutive shares excluded from calculation of EPS			7,615,000	7,139,000			2,009,000
Issuance of convertible notes, interest rate (as a percent)					4.375%	4.375%
Common stock issued in connection with restricted stock awards (in shares)	1,288,000
Unvested restricted stock awards, canceled (in shares)	500,000