Equity Incentive Plan (Stock Option Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012 Y
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Beginning Balance of outstanding	3,004
Shares, Granted	0
Shares, Cancelled	(152)
Shares, Exercised	(2,279)
Shares, Ending Balance of outstanding restricted stock	573
Shares, Exercisable	556
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance of outstanding stock	$ 9.89
Weighted Average Exercise Price, Granted	$ 0.00
Weighted Average Exercise Price, Cancelled	$ 16.43
Weighted Average Exercise Price, Exercised	$ 9.33
Weighted Average Exercise Price, Ending Balance of outstanding stock	$ 10.36
Weighted Average Exercise Price, Exercisable	$ 10.48
Weighted Average Remaining Contractual Term, Ending Balance of outstanding stock	1.59
Weighted Average Remaining Contractual Term, Exercisable	1.53
Aggregate Intrinsic Value, Ending Balance of outstanding stock	$ 6,539
Aggregate Intrinsic Value, Exercisable	$ 6,283