CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue
Product	$ 141,957	$ 111,596	$ 396,684	$ 302,238
Services	39,760	35,938	114,321	100,532
Total revenue	181,717	147,534	511,005	402,770
Cost of revenue
Products	85,658	69,557	243,360	192,816
Services	24,487	23,814	74,606	68,437
Total cost of revenue	110,145	93,371	317,966	261,253
Gross profit	71,572	54,163	193,039	141,517
Operating expenses
Research and development	11,958	12,819	34,148	39,208
Selling, general and administrative	40,016	31,854	109,496	98,667
Restructuring charges	828	996	2,663	9,807
Total operating expenses	52,802	45,669	146,307	147,682
Operating income (loss)	18,770	8,494	46,732	(6,165)
Interest income	137	55	432	310
Interest expense	(93)	(37)	(286)	(56)
Gain on settlement of equity method investment			1,847
Other loss, net	(314)	(107)	(848)	(289)
Income (loss) before income taxes and earnings of equity method investments	18,500	8,405	47,877	(6,200)
Income tax provision	3,680	220	9,900	75,070
Income (loss) before equity in earnings of equity method investments	14,820	8,185	37,977	(81,270)
Equity in earnings of equity method investments	2,530	379	7,249	1,248
Net income (loss)	$ 17,350	$ 8,564	$ 45,226	$ (80,022)
Basic net income (loss) per share (in dollars per share)	$ 0.25	$ 0.12	$ 0.65	$ (1.17)
Diluted net income (loss) per share (in dollars per share)	0.25	0.12	0.64	(1.17)
Dividend declared per share (in dollars per share)	$ 0.10	$ 0.10	$ 0.30	$ 0.30
Weighted-average shares used in computing net income (loss) per share:
Basic (shares)	69,711	68,628	69,496	68,437
Diluted (shares)	70,405	69,166	70,198	68,437