EARNINGS (LOSS) PER SHARE ("EPS") (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
EARNINGS (LOSS) PER SHARE ("EPS")
Net loss	$ (110,838)	$ (8,713)
Weighted average shares outstanding - basic	85,010,000	82,505,000
Weighted average shares outstanding - diluted	85,010,000	82,505,000
Basic EPS (in dollars per share)	$ (1.30)	$ (0.11)
Diluted EPS (in dollars per share)	$ (1.30)	$ (0.11)
Antidilutive shares
Common stock issued in connection with restricted stock awards (in shares)	1,801,000
Unvested restricted stock awards, canceled (in shares)	945,000
Unvested restricted stock
Antidilutive shares
Antidilutive shares excluded from calculation of EPS	5,900,000	4,854,000
Stock option awards
Antidilutive shares
Antidilutive shares excluded from calculation of EPS	2,009,000	2,302,000
4.375% convertible notes due 2014 ("Convertible Notes")
Antidilutive shares
Issuance of convertible notes, interest rate (as a percent)	4.375%