Stock-Based Compensation (Options and Common Shares Reserved for Grant) (Details) (Stock Options, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013
Stock Options
Options Outstanding [Roll Forward]
Options Outstanding, Beginning Balance	5,754
Options Outstanding, Granted	1,049
Options Outstanding, Exercised	(280)
Options Outstanding, Cancelled	(244)
Options Outstanding, Ending Balance	6,279
Options Outstanding, Exercisable	4,562
Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance	$ 10.76
Weighted Average Exercise Price, Granted	$ 9.33
Weighted Average Exercise Price, Exercised	$ 9.76
Weighted Average Exercise Price, Cancelled	$ 10.35
Weighted Average Exercise Price, Ending Balance	$ 10.67
Weighted Average Exercise Price, Exercisable	$ 11.00
Weighted Average Remaining Contractual Term [Abstract]
Weighted Average Remaining Contractual Term	5 years 7 months 6 days
Weighted Average Remaining Contractual Term, Exercisable	4 years 7 months 13 days
Aggregate Intrinsic Value [Abstract]
Aggregate Intrinsic Value	$ 3,152	[1]
Aggregate Intrinsic Value, Exercisable	$ 2,357	[1]
Closing Stock Price	$ 9.99

[1] The aggregate intrinsic value represents the total pre-tax intrinsic value, based on our closing stock price of $9.99 as of September 30, 2013, which would have been received by the option holders had all option holders exercised their options as of that date.