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Share-Based Compensation
 3 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-Based Compensation
SHARE-BASED COMPENSATION
A summary of our share-based compensation expense during the three months ended December 31, 2015 and 2014 is as follows:
 
Three Months Ended December 31,
(In thousands, except average service periods)
2015
 
2014
Share-based compensation recognized
$
2,371

 
$
4,024

Unrecognized compensation cost, net of estimated forfeitures
25,940

 
29,089

Remaining weighted-average service period (years)
2.3

 
2.3



Restricted Stock Units

During the three months ended December 31, 2015, we granted to certain employees and our non-employee directors, restricted stock and restricted stock units that are subject to vesting conditions. The grant date fair value of these awards was based on the fair value of our common stock on the date of grant. A summary of our restricted stock activity for the three months ended December 31, 2015 is as follows:
 
Number of Shares (000s)
 
Weighted Average Fair Value
Unvested at October 1, 2015
711

 
$
43.14

Granted
569

 
15.28

Vested
(162
)
 
46.99

Forfeited
(18
)
 
44.58

Unvested at December 31, 2015
1,100

 
28.14



Performance Units
During the three months ended December 31, 2015, we granted to certain employees share-based awards that are subject to market-based performance conditions ("performance units"). The grant date fair value of these performance units was determined through use of the Monte Carlo simulation method. A summary of performance unit stock activity for the three months ended December 31, 2015 is as follows:
 
 
Number of Shares (000s)
 
Weighted Average Fair Value
Unvested at October 1, 2015
240

 
$
43.73

Granted
254

 
15.63

Vested
—

 
—

Forfeited
—

 
—

Unvested at December 31, 2015
494

 
29.26



Stock Options

A summary of stock option activity for the three months ended December 31, 2015 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, 2015
685

 
$
34.90

 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
—

 
—

 
 
 
—

Forfeited
—

 
—

 
 
 
 
Expired
(10
)
 
18.58

 
 
 
 
Outstanding at December 31, 2015
675

 
35.15

 
4.1
 
(16,822
)
Exercisable at December 31, 2015
675

 
35.15

 
4.1
 
(16,822
)