Stock-Based Compensation (Options and Common Shares Reserved for Grant) (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares
Options Outstanding [Roll Forward]
Options Outstanding, Beginning Balance | shares	6,029
Options Outstanding, Granted | shares	810
Options Outstanding, Exercised | shares	(739)
Options Outstanding, Forfeited / Cancelled | shares	(1,300)
Options Outstanding, Ending Balance | shares	4,800
Options Outstanding, Exercisable | shares	3,540
Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance	$ 10.61
Weighted Average Exercise Price, Granted	8.12
Weighted Average Exercise Price, Exercised	8.87
Weighted Average Exercise Price, Forfeited / Cancelled	11.55
Weighted Average Exercise Price, Ending Balance	10.21
Weighted Average Exercise Price, Exercisable	$ 10.66
Weighted Average Remaining Contractual Term [Abstract]
Weighted Average Remaining Contractual Term, Outstanding	4 years 9 months 18 days
Weighted Average Remaining Contractual Term, Exercisable	4 years 1 month 6 days
Aggregate Intrinsic Value [Abstract]
Aggregate Intrinsic Value, Outstanding | $	$ 9,163	[1]
Aggregate Intrinsic Value, Exercisable | $	$ 5,575	[1]
Closing Stock Price	$ 11.79

[1] The aggregate intrinsic value represents the total pre-tax intrinsic value, based on our closing stock price of $11.79 as of September 30, 2015, which would have been received by the option holders had all option holders exercised their options as of that date.