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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Sep. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share and Stock Option Data
A summary of shares available for issuance and outstanding stock option and restricted stock awards for our two stock incentive plans as of September 30, 2012 is as follows:
 
 
2007
Plan
 
2001
Plan
Shares available for future awards or grants
1,048,399

 
—

Outstanding stock option grants
994,525

 
448,450

Outstanding unvested restricted stock awards
700,508

 
—
Schedule of Unrecognized Compensation Cost
Unrecognized compensation cost, net of estimated forfeitures, related to awards of stock options and restricted stock and the related remaining weighted-average service period is as follows (in thousands, except average service periods):
 
 
September 30,
 
2012
 
2011
Unrecognized Compensation Cost
 
 
 
Stock options
$
6,484

 
$
4,964

Restricted stock awards
12,999

 
6,575

Total
$
19,483

 
$
11,539

Remaining weighted average service period (Years)
2.2

 
2.3
Fair Value Assumptions
We estimate the fair value of each stock option on the date of grant using the Black-Scholes pricing model and the following assumptions:
 
 
Fiscal 2012
 
Fiscal 2011
 
Fiscal 2010
Risk-Free Interest Rate
0.9
%
 
1.9
%
 
2.1
%
Expected Volatility
44
%
 
44
%
 
43
%
Expected Life (Years)
5.4

 
5.2

 
5.3

Dividend Yield
None

 
None

 
None
Stock Option Activity
A summary of stock option activity for fiscal year 2012 is as follows:
 
 
Number of
Options
(000s)
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Life (Years)
 
Aggregate
Intrinsic
Value  (000s)
Outstanding at October 1, 2011
1,480

 
$
25.44

 
—

 
$
—

Granted
320

 
$
41.60

 
 
 
 
Exercised
(285
)
 
$
19.39

 
 
 
$
7,944

Forfeited
(65
)
 
$
36.60

 
 
 
 
Outstanding at September 30, 2012
1,450

 
$
29.74

 
6.1

 
$
22,663

Exercisable at September 30, 2012
855

 
$
23.95

 
4.5

 
$
18,378
Summary of Restricted Stock Activity
A summary of restricted stock activity for fiscal year 2012 is as follows:
 
 
Number of
Shares
(000s)
 
Weighted
Average
Fair Value
Unvested at October 1, 2011
560

 
$
34.54

Granted
392

 
$
41.36

Vested
(207
)
 
$
33.07

Forfeited
(44
)
 
$
38.49

Unvested at September 30, 2012
701

 
$
38.54