Net Income (Loss) Per Share

6 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

Net Income (Loss) Per Share

Basic net income (loss) per share is calculated based on the weighted average common shares outstanding for the period. Basic net income (loss) per share for the three and six months ended September 30, 2012 and 2011 is presented below:

	Three Months Ended		Three Months Ended			Six Months Ended		Six Months Ended
	September 30, 2012		September 30, 2011			September 30, 2012		September 30, 2011
			As adjusted (Note 1)					As adjusted (Note 1)
	(Amounts in thousands)
Basic Net Income (Loss) Per Common Share:
Numerator:
Net income (loss)	$	75,529	$	(25,306	)	$	31,329	$	(14,972	)
Denominator:
Weighted average common shares outstanding	134,390		133,755			133,815		135,374
Basic Net Income (Loss) Per Common Share	$	0.56	$	(0.19	)	$	0.23	$	(0.11	)

Diluted net income (loss) per common share reflects the potential dilutive effect, if any, of the conversion of the October 2004 2.9375% Notes, the February 2005 3.625% Notes, the April 2009 3.625% Notes and the January 2012 4.00% Notes under the "if converted" method. Diluted net income (loss) per common share also reflects share purchase options and restricted share units using the treasury stock method when dilutive, and any contingently issuable shares when dilutive. Diluted net income (loss) per common share for the three and six months ended September 30, 2012 and 2011 is presented below:

	Three Months Ended		Three Months Ended			Six Months Ended		Six Months Ended
	September 30, 2012		September 30, 2011			September 30, 2012		September 30, 2011
			As adjusted (Note 1)					As adjusted (Note 1)
	(Amounts in thousands)
Diluted Net Income (Loss) Per Common Share:
Numerator:
Net income (loss)	$	75,529	$	(25,306	)	$	31,329	$	(14,972	)
Add:
Interest on convertible notes, net of tax	2,828		—			5		—
Amortization of deferred financing costs, net of tax	19		—			—		—
Numerator for Diluted Net Income (Loss) Per Common Share	$	78,376	$	(25,306	)	$	31,334	$	(14,972	)
Denominator:
Weighted average common shares outstanding	134,390		133,755			133,815		135,374
Effect of dilutive securities:
Conversion of notes	12,613		—			30		—
Share purchase options	935		—			402		—
Restricted share units	758		—			363		—
Adjusted weighted average common shares outstanding	148,696		133,755			134,610		135,374
Diluted Net Income (Loss) Per Common Share	$	0.53	$	(0.19	)	$	0.23	$	(0.11	)

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As of September 30, 2012 and 2011, the outstanding common shares issuable presented below were excluded from diluted net income (loss) per common share because their inclusion would have had an anti-dilutive effect.

	September 30, 2011
	(in thousands)
Anti-dilutive shares issuable under share purchase options and restricted share units
Share purchase options	3,310
Restricted share units	1,335
Contingently issuable restricted share units	303
Total	4,948

In addition, the dilutive effect of the conversion of the Company's convertible senior subordinated notes of 13.3 million shares were excluded from diluted net income per common share for the six months ended September 30, 2012, and 12.1 million shares and 12.4 million shares were excluded from diluted net loss per common share for the three and six months ended September 30, 2011, respectively, because their inclusion would have had an anti-dilutive effect.