Equity (Schedule of Earnings per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Equity [Abstract]
Numerator - Net income (loss)	$ (7,283)	$ (9,039)	$ 7,240	$ (32,603)
Less: Undistributed earnings allocated to participating securities	0	0	(42)	0
Undistributed earnings allocated to common shareholders for basic net income (loss) per share	(7,283)	(9,039)	7,198	(32,603)
Undistributed earnings allocated to common shareholders for diluted net income (loss) per share	$ (7,283)	$ (9,039)	$ 7,198	$ (32,603)
Denominator:
Denominator for basic net income (loss) per share - weighted average shares outstanding	26,609	23,686	26,320	23,441
Dilutive options outstanding, unvested stock units and ESPP	0	0	300	0
Denominator for diluted net income (loss) per share - adjusted weighted average shares outstanding	26,609	23,686	26,620	23,441
Net loss per basic share (in dollars per share)	$ (0.27)	$ (0.38)	$ 0.27	$ (1.39)
Net loss per diluted share (in dollars per share)	$ (0.27)	$ (0.38)	$ 0.27	$ (1.39)
Weighted average antidilutive options, unvested restricted stock units and awards, warrants and ESPP shares excluded from the computation	2,873	3,531	2,467	3,604
Average market price of common stock	$ 4.11	$ 4.19	$ 4.81	$ 4.27