Consolidated Statements of Income (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Revenue:
Product	$ 126,829	$ 118,396	$ 364,669	$ 362,810
Service	18,642	16,663	56,555	51,834
Total revenue	145,471	135,059	421,224	414,644
Cost of sales:
Product	76,605	70,511	220,610	220,030
Service	11,171	9,952	32,846	29,511
Total cost of sales	87,776	80,463	253,456	249,541
Gross profit	57,695	54,596	167,768	165,103
Operating expenses:
Selling and marketing	22,644	20,337	66,538	59,035
General and administrative	11,384	11,620	38,568	37,109
Research and development	6,269	6,211	18,763	16,851
Total operating expenses	40,297	38,168	123,869	112,995
Income from operations	17,398	16,428	43,899	52,108
Interest expense, net	(146)	(50)	(511)	(194)
Other (expense) income, net	(59)	405	(562)	(97)
Income before income taxes	17,193	16,783	42,826	51,817
Provision for income taxes	3,049	5,236	11,758	15,426
Net income	$ 14,144	$ 11,547	$ 31,068	$ 36,391
Basic-
Earnings per share (in dollars per share)	$ 0.94	$ 0.73	$ 2.04	$ 2.32
Weighted average number of common shares outstanding - basic (in shares)	15,117	15,733	15,238	15,708
Diluted-
Earnings per share (in dollars per share)	$ 0.92	$ 0.72	$ 2.01	$ 2.29
Weighted average number of common shares outstanding - diluted (in shares)	15,294	15,945	15,422	15,906
Dividends declared per share (in dollars per share)	$ 0.30	$ 0.30	$ 0.90	$ 0.90