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Share-Based Compensation (Summary of Restricted Stock Activity) (Details) (Restricted Stock [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Dec. 31, 2013
Restricted Stock [Member]
 
Number of Shares:  
Unvested at October 1, 2013 (shares) 849
Granted (shares) 297
Vested (shares) (132)
Forfeited (shares) (34)
Unvested at December 31, 2013 (shares) 980
Wtd. Avg. Fair Value (in dollars per share):  
Unvested at October 1, 2013 (dollars per share) $ 42.42
Granted (dollars per share) $ 54.62
Vested (dollars per share) $ 37.29
Forfeited (dollars per share) $ 41.17
Unvested at December 31, 2013 (dollars per share) $ 46.85