CONSOLIDATED STATEMENTS OF OPERATIONS AND OTHER COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Revenue	$ 84,590	$ 63,559	$ 45,390
Operating costs and expenses
Selling and marketing	27,405	21,700	14,484
Research and development	19,018	15,673	10,430
General and administrative	19,861	17,067	11,310
Acquisition-related costs and expenses	7,563	8,239	2,356
Restructuring costs	3,067	0	0
Total operating costs and expenses	89,180	71,365	42,621
Operating income (loss)	(4,590)	(7,806)	2,769
Other income (expense), net	602	(935)	402
Income (loss) before income taxes	(3,988)	(8,741)	3,171
Income tax benefit (provision)	3,264	(3,066)	10,921
Net income (loss)	$ (724)	$ (11,807)	$ 14,092
Net income (loss) per share—basic (in dollars per share)	$ (0.02)	$ (0.33)	$ 0.43
Net income (loss) per share—diluted (in dollars per share)	$ (0.02)	$ (0.33)	$ 0.40
Shares used in calculating net income (loss) per share—basic (in shares)	39,341	35,811	33,083
Shares used in calculating net income (loss) per share—diluted (in shares)	39,341	35,811	35,537
Other comprehensive income (loss)
Net income (loss)	$ (724)	$ (11,807)	$ 14,092
Foreign currency translation adjustment	(3,504)	(723)	208
Unrealized gain (loss) on investments	29	(10)	(19)
Other comprehensive income (loss)	(4,199)	(12,540)	14,281
Software and hardware
Revenue	46,845	40,698	29,647
Operating costs and expenses
Cost of revenue	3,711	3,064	1,112
Service and other
Revenue	37,745	22,861	15,743
Operating costs and expenses
Cost of revenue	$ 8,555	$ 5,622	$ 2,929