Equity (Schedule of Earnings per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Numerator - Net income (loss)	$ (2,054)	$ 2,826
Less: Undistributed earnings allocated to participating securities	0	(23)
Undistributed earnings allocated to common shareholders for basic net income (loss) per share	(2,054)	2,803
Undistributed earnings allocated to common shareholders for diluted net income (loss) per share	$ (2,054)	$ 2,803
Denominator:
Denominator for basic net income (loss) per share - weighted average shares outstanding	29,938	25,977
Dilutive options outstanding, unvested stock units and ESPP	0	259
Denominator for diluted net income (loss) per share - adjusted weighted average shares outstanding	29,938	26,236
Basic net income (loss) per share (in dollars per share)	$ (0.07)	$ 0.11
Diluted net income (loss) per share (in dollars per share)	$ (0.07)	$ 0.11
Weighted average antidilutive options, unvested restricted stock units and awards, warrants and ESPP shares excluded from the computation	3,049	2,913
Average market price of common stock (in dollars per share)	$ 5.04	$ 4.68