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Net (Loss) Income Per Share
 9 Months Ended
Jun. 30, 2013
Earnings Per Share, Basic and Diluted [Abstract]  
Net (Loss) Income Per Share
Net (Loss) Income Per Share
The following table sets forth the computation for basic and diluted net income (loss) per share in accordance with the two-class method (dollars in thousands, except per share amounts): 
 
Three Months Ended June 30,
 
Nine Months Ended June 30,
2013
 
2012
 
2013
 
2012
Numerator:
 
 
 
 
 
 
 
Basic
 
 
 
 
 
 
 
Net (loss) income
$
(34,974
)
 
$
79,264

 
$
(82,918
)
 
$
89,494

Allocation of undistributed earnings to preferred stockholders
—

 
(910
)
 
—

 
(1,032
)
Net (loss) income available to common stockholders — basic
$
(34,974
)
 
$
78,354

 
$
(82,918
)
 
$
88,462

Diluted
 
 
 
 
 
 
 
Net (loss) income available to common stockholders — diluted
$
(34,974
)
 
$
79,264

 
$
(82,918
)
 
$
89,494

Denominator:
 
 
 
 
 
 
 
Basic
 
 
 
 
 
 
 
Weighted average common shares outstanding
315,441

 
306,766

 
314,348

 
305,364

Diluted
 
 
 
 
 
 
 
Weighted average common shares outstanding — basic
315,441

 
306,766

 
314,348

 
305,364

Weighted average effect of dilutive common equivalent shares:
 
 
 
 
 
 
 
Assumed conversion of Series B Preferred Stock
—

 
3,562

 
—

 
3,562

Employee stock compensation plans
—

 
6,292

 
—

 
7,486

Warrants
—

 
1,893

 
—

 
2,408

2027 Convertible Debentures
—

 
1,825

 
—

 
2,723

Other contingently issuable shares
—

 
221

 
—

 
209

Weighted average common shares outstanding — diluted
315,441

 
320,559

 
314,348

 
321,752

Net (loss) income per share:
 
 
 
 
 
 
 
Basic
$
(0.11
)
 
$
0.26

 
$
(0.26
)
 
$
0.29

Diluted
$
(0.11
)
 
$
0.25

 
$
(0.26
)
 
$
0.28


Common equivalent shares are excluded from the computation of diluted net (loss) income per share if their effect is anti-dilutive. Potentially dilutive common equivalent shares aggregating to 14.7 million and 6.0 million shares for the three months ended June 30, 2013 and 2012, respectively, and 15.0 million and 4.8 million shares for the nine months ended June 30, 2013 and 2012, respectively, have been excluded from the computation of diluted net (loss) income per share because their inclusion would be anti-dilutive.