Equity (Schedule of Earnings per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Income (loss) from continuing operations	$ 1,855	$ (162)	$ 3,621	$ (296)
(Loss) income from discontinued operations	(7)	4,144	(16)	5,265
Net income	$ 1,848	$ 3,982	$ 3,605	$ 4,969
Denominator:
Denominator for basic net income per share - weighted average shares outstanding (in shares)	26,622	25,942	26,449	25,818
Dilutive options outstanding, unvested stock units and ESPP (in shares)	963	0	917	0
Denominator for diluted net income per share - adjusted weighted average shares outstanding (in shares)	27,585	25,942	27,366	25,818
Net income (loss) per basic share:
Net income (loss) per basic share, continuing operations, (in usd per share)	$ 0.07	$ (0.01)	$ 0.14	$ (0.01)
Net income (loss) per basic share, discontinued operations (in usd per share)	0.00	0.16	0.00	0.20
Net income per basic share (in usd per share)	0.07	0.15	0.14	0.19
Net income (loss) per diluted share:
Net income (loss) per diluted share, continuing operations (in usd per share)	0.07	(0.01)	0.13	(0.01)
Net income (loss) per diluted share, discontinued operations (in usd per share)	0.00	0.16	0.00	0.20
Net income per diluted share (in usd per share)	$ 0.07	$ 0.15	$ 0.13	$ 0.19
Weighted average antidilutive options, unvested restricted stock units and awards, warrants and ESPP shares excluded from the computation (in shares)	370	721	550	794
Average market price of common stock (in dollars per share)	$ 9.11	$ 5.44	$ 7.99	$ 6.19