Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Revenue
Revenue	$ 828,586	$ 892,518	$ 778,032
Cost of sales
Total cost of sales	540,198	563,588	472,503
Gross profit	288,388	328,930	305,529
Operating expenses
Selling and marketing	120,288	131,639	126,333
General and administrative	96,089	86,658	79,240
Research and development	28,109	30,928	34,784
Impairment of assets	291,389	0	0
Total operating expenses	535,875	249,225	240,357
Income (loss) from operations	(247,487)	79,705	65,172
Interest expense, net	(33,970)	(31,558)	(25,882)
Other income (expense), net	(2,249)	466	4,933
Income (loss) before income taxes	(283,706)	48,613	44,223
Income tax provision (benefit)	(11,655)	5,546	(17,105)
Net income (loss)	$ (272,051)	$ 43,067	$ 61,328
Basic
Earnings per share (in dollars per share)	$ (14.16)	$ 2.24	$ 3.20
Weighted average common shares outstanding (in shares)	19,212	19,258	19,163
Diluted
Earnings per share (in dollars per share)	$ (14.16)	$ 2.21	$ 3.18
Weighted average dilutive common shares outstanding (in shares)	19,212	19,447	19,293
Dividends per share (in dollars per share)	$ 0.60	$ 1.20	$ 1.20
Product
Revenue
Revenue	$ 726,028	$ 782,012	$ 674,391
Cost of sales
Cost of goods and services sold	477,716	494,725	409,525
Service
Revenue
Revenue	102,558	110,506	103,641
Cost of sales
Cost of goods and services sold	$ 62,482	$ 68,863	$ 62,978