Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Total Revenue	$ 70,338	$ 61,166	$ 206,102	$ 189,243
Cost of sales:
Amortization of intangibles	1,225	719	3,272	2,184
Total cost of sales	32,989	32,838	99,648	100,803
Gross Profit	37,349	28,328	106,454	88,440
Operating expenses:
Sales and marketing	13,133	11,392	39,750	34,583
Research and development	10,892	8,584	32,755	27,671
General and administrative	10,378	6,751	27,724	18,309
Restructuring charge (reversal)	91	(20)	129	(87)
Total operating expenses	34,494	26,707	100,358	80,476
Operating income	2,855	1,621	6,096	7,964
Other (expense) income, net:
Interest income	22	205	303	557
Interest expense	(900)	0	(3,066)	(94)
Other (expense) income, net	(67)	(174)	(214)	131
Total other (expense) income, net	(945)	31	(2,977)	594
Income before income taxes	1,910	1,652	3,119	8,558
Income tax expense (benefit)	144	4	(859)	886
Net income	$ 1,766	$ 1,648	$ 3,978	$ 7,672
Basic net income per common share:
Net income, basic (USD per share)	$ 0.06	$ 0.06	$ 0.14	$ 0.28
Diluted net income per common share
Net income, diluted (USD per share)	$ 0.06	$ 0.06	$ 0.13	$ 0.27
Weighted average common shares:
Basic (shares)	28,972	28,072	28,772	27,816
Diluted (shares)	29,187	28,589	29,477	28,414
Product
Revenue:
Revenue	$ 62,807	$ 53,434	$ 182,695	$ 166,887
Cost of sales:
Cost of sales excluding amortization	28,759	29,230	86,937	89,124
Service
Revenue:
Revenue	7,531	7,732	23,407	22,356
Cost of sales:
Cost of sales excluding amortization	$ 3,005	$ 2,889	$ 9,439	$ 9,495