Equity (Schedule of Earnings per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator:
Income (loss) from continuing operations	$ 1,178	$ 464	$ 882	$ (3,622)
Income from discontinued operations	123	1,976	5,388	65,242
Net income	$ 1,301	$ 2,440	$ 6,270	$ 61,620
Denominator:
Denominator for basic net income (loss) per share - weighted average shares outstanding (in shares)	26,103	31,203	25,913	31,494
Dilutive options outstanding, unvested stock units and ESPP (in shares)	166	229	273	0
Denominator for diluted net income (loss) per share - adjusted weighted average shares outstanding (in shares)	26,269	31,432	26,186	31,494
Net (loss) income per basic share:
Net income (loss) per basic share, continuing operations, (in usd per share)	$ 0.05	$ 0.02	$ 0.04	$ (0.11)
Net (loss) income per basic share, discontinued operations (in usd per share)	0.00	0.06	0.20	2.07
Net income per basic share (in usd per share)	0.05	0.08	0.24	1.96
Earnings Per Share, Diluted [Abstract]
Net income (loss) per diluted share, continuing operations (in usd per share)	0.05	0.02	0.04	(0.11)
Net income per diluted share, discontinued operations (in usd per share)	0.00	0.06	0.20	2.07
Net income per diluted share (in usd per share)	$ 0.05	$ 0.08	$ 0.24	$ 1.96
Weighted average antidilutive options, unvested restricted stock units and awards, warrants and ESPP shares excluded from the computation (in shares)	522	749	528	1,378
Average market price of common stock (in dollars per share)	$ 5.64	$ 5.99	$ 6.00	$ 5.54