EARNINGS (LOSS) PER SHARE ("EPS") (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Computation of Basic EPS:
Net loss	$ (61,914)	$ (110,838)
Weighted average shares outstanding - basic and diluted	86,992,000	85,010,000
Basic and Diluted EPS (in dollars per share)	$ (0.71)	$ (1.30)
Antidilutive shares
Common stock issued in connection with restricted stock awards (in shares)	1,014,000
Unvested restricted stock awards, canceled (in shares)	19,000
Unvested restricted stock
Antidilutive shares
Antidilutive shares excluded from calculation of EPS	7,139,000	5,900,000
4.375% convertible notes due 2014 ("4.375% Convertible Notes")
Antidilutive shares
Issuance of convertible notes, interest rate (as a percent)	4.375%
Stock option awards
Antidilutive shares
Antidilutive shares excluded from calculation of EPS	2,009,000	2,009,000