CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Net sales	$ 176,253	$ 170,779	$ 458,400	$ 453,136
Cost of sales	96,528	91,446	255,227	250,797
Gross profit	79,725	79,333	203,173	202,339
Operating expenses:
Marketing and selling	36,484	31,191	94,273	89,280
Administrative management, finance and information systems	9,879	11,071	30,864	32,713
Research and development	5,333	5,116	16,185	15,352
Total operating expenses	51,696	47,378	141,322	137,345
Operating profit	28,029	31,955	61,851	64,994
Interest income	(434)	(172)	(1,291)	(493)
Interest expense	64	55	137	170
Other (income) expense, net	(493)	293	(238)	(4,231)
Profit before income taxes	28,892	31,779	63,243	69,548
Income tax expense	6,826	8,009	15,733	23,923
Net income	$ 22,066	$ 23,770	$ 47,510	$ 45,625
Weighted avage common shares - Basic:
Participating securities (shares)	33	50	30	49
Weighted average common shares - Dilutive (shares)	10,037	10,001	10,021	9,988
Class A
Weighted avage common shares - Basic:
Weighted average common shares - Basic (shares)	8,792	8,739	8,779	8,727
Net income per common share - Basic:
Net income per common share - Basic (USD per share)	$ 2.22	$ 2.40	$ 4.79	$ 4.62
Net income per common share - Diluted:
Net income per common share - Diluted (USD per share)	$ 2.19	$ 2.37	$ 4.72	$ 4.54
Class B
Weighted avage common shares - Basic:
Weighted average common shares - Basic (shares)	1,212	1,212	1,212	1,212
Net income per common share - Basic:
Net income per common share - Basic (USD per share)	$ 2.02	$ 2.19	$ 4.35	$ 4.20
Net income per common share - Diluted:
Net income per common share - Diluted (USD per share)	$ 2.19	$ 2.37	$ 4.72	$ 4.54