Quarterly Information (Unaudited) (Tables)

12 Months Ended

Sep. 30, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Data

The following table sets forth selected quarterly financial data for 2016, 2015 and 2014 (shown in thousands except share data):

	2016 (by quarter)
	1			2			3		4
Revenue	$	7,404		$	8,522		$	9,105	$	9,670
Cost of revenue		942			720			793		940
Operating expenses		6,804			7,171			7,618		7,889
Operating income (loss)		(342	)		631			694		841
Other income (expense), net		36			30			45		23
Income tax benefit (provision)		(16	)		(79	)		—		96
Net income (loss)		(322	)		582			739		960
Net income (loss) per share:
Basic income (loss) per share		(0.01	)		0.02			0.02		0.03
Shares used in calculating net income (loss) per share - basic		31,094,417			31,325,577			31,823,386		32,086,223
Diluted income (loss) per share		(0.01	)		0.02			0.02		0.03
Shares used in calculating net income (loss) per    share - diluted		31,094,417			33,133,920			34,531,964		34,859,861

	2015 (by quarter)
	1			2		3		4
Revenue	$	5,389		$	5,672	$	6,440	$	7,866
Cost of revenue		497			558		591		825
Operating expenses		4,758			4,628		5,539		6,079
Operating income (loss)		134			486		310		962
Other income (expense), net		15			21		30		25
Income tax benefit (provision)		(3	)		—		578		(32	)
Net income (loss)		146			507		918		955
Net income (loss) per share:
Basic income (loss) per share		0.00			0.02		0.03		0.03
Shares used in calculating net income (loss) per share - basic		30,618,097			30,697,391		30,764,694		30,969,157
Diluted income (loss) per share		0.00			0.02		0.03		0.03
Shares used in calculating net income (loss) per    share - diluted		31,173,815			31,321,259		31,645,696		31,664,178

	2014 (by quarter)
	1			2			3			4
Revenue	$	4,463		$	4,484		$	4,660		$	5,544
Cost of revenue		571			450			608			520
Operating expenses		5,373			6,246			5,702			5,089
Operating income (loss)		(1,481	)		(2,212	)		(1,650	)		(65	)
Other income (expense), net		13			19			17			67
Income tax benefit (provision)		—			—			—			—
Net income (loss)		(1,468	)		(2,193	)		(1,633	)		2
Net income (loss) per share:
Basic income (loss) per share		(0.05	)		(0.07	)		(0.05	)		0.00
Shares used in calculating net income (loss) per share - basic		30,402,397			30,453,455			30,481,168			30,510,587
Diluted income (loss) per share		(0.05	)		(0.07	)		(0.05	)		0.00
Shares used in calculating net income (loss) per    share - diluted		30,402,397			30,453,455			30,481,168			31,022,148