EARNINGS (LOSS) PER SHARE (''EPS'') (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Computation of Basic Earnings (Loss) Per Share:
Net income (loss)	$ 14,104	$ 40,859	$ (41,980)	$ 70,512
Less: net income allocated to participating securities	(939)	(2,641)		(4,787)
Net income (loss) for basic EPS calculation	13,165	38,218	(41,980)	65,725
Total weighted average shares outstanding - basic	89,523,000	86,321,000	83,003,000	85,783,000
Less: weighted average participating shares outstanding	(5,958,000)	(5,578,000)		(5,824,000)
Weighted average common shares outstanding - basic	83,565,000	80,743,000	83,003,000	79,959,000
Basic earnings (loss) per common share (in dollars per share)	$ 0.16	$ 0.47	$ (0.51)	$ 0.82
Computation of Diluted Earnings (Loss) Per Share:
Net income (loss)	14,104	40,859	(41,980)	70,512
Less: net income allocated to participating securities	(939)	(2,641)		(4,787)
Add: interest expense, net of tax, on Convertible Notes		3,552		10,446
Net income (loss) for diluted EPS calculation	$ 13,165	$ 41,770	$ (41,980)	$ 76,171
Weighted average common shares outstanding - basic	83,565,000	80,743,000	83,003,000	79,959,000
Add: dilutive effect of common stock equivalents (in shares)		12,939,000		12,938,000
Weighted average common shares outstanding - diluted	83,565,000	93,682,000	83,003,000	92,897,000
Diluted earnings (loss) per common share (in dollars per share)	$ 0.16	$ 0.45	$ (0.51)	$ 0.82
Antidilutive shares
Strike price of warrants (in dollars per share)	$ 14.945
Common stock issued in connection with restricted stock awards (in shares)	2,773,000		2,917,000
Unvested restricted stock awards, canceled (in shares)	8,000		116,000
Unvested restricted stock
Antidilutive shares
Antidilutive shares excluded from calculation of EPS			6,225,000
Stock option awards
Antidilutive shares
Antidilutive shares excluded from calculation of EPS	2,293,000	2,386,000	2,293,000	2,386,000