Share-Based Compensation - Summary of Stock Option Activity (Details) - Jun. 30, 2015 - Stock Options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Total
Number of Options:
Outstanding at October 1, 2014 (shares)	833
Granted (shares)	0
Exercised (shares)	(68)
Forfeited (shares)	(17)
Expired (Shares)	(8)
Outstanding at March 31, 2015 (shares)	740
Exercisable at June 30, 2015 (shares)	691
Wtd. Avg. Exercise Price (in dollars per share):
Outstanding at October 1, 2014 (dollars per share)	$ 33.52
Granted (dollars per share)	0.00
Exercised (dollars per share)	15.57
Forfeited (dollars per share)	40.57
Expired (dollars per share)	12.31
Outstanding at March 31, 2015 (dollars per share)	35.23
Exercisable at June 30, 2015 (dollars per share)	$ 34.78
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Wtd. Avg. Remaining Contractual Life (Years), Outstanding at June 30, 2015	4 years 7 months 6 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	4 years 6 months
Aggregate Intrinsic Value, Exercised	$ 1,227
Aggregate Intrinsic Value, Outstanding at June 30, 2015	1,158
Aggregate Intrinsic Value, Exercisable at June 30, 2015	$ 1,158