Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Revenue
Product	$ 691,471	$ 562,340	$ 484,835
Service	96,484	87,807	79,099
Total revenue	787,955	650,147	563,934
Cost of sales
Product	427,405	365,401	296,962
Service	58,272	53,342	47,359
Total cost of sales	485,677	418,743	344,321
Gross profit	302,278	231,404	219,613
Operating expenses
Selling and marketing	124,912	94,992	82,974
General and administrative	87,539	69,313	51,438
Research and development	34,999	25,336	23,705
Total operating expenses	247,450	189,641	158,117
Income from operations	54,828	41,763	61,496
Interest expense, net	(30,821)	(8,489)	(795)
Other income (expense), net	(996)	238	(1,529)
Income before income taxes	23,011	33,512	59,172
Income tax provision (benefit)	(2,073)	6,018	13,710
Net income	$ 25,084	$ 27,494	$ 45,462
Basic
Basic (in dollars per share)	$ 1.32	$ 1.72	$ 3.03
Weighted average common shares outstanding (in shares)	19,040	16,027	14,984
Diluted
Diluted (in dollars per share)	$ 1.31	$ 1.70	$ 3.00
Weighted average dilutive common shares outstanding (in shares)	19,137	16,179	15,142
Dividends per share (in dollars per share)	$ 1.20	$ 1.20	$ 1.20