Earnings Per Share (Schedule of Earnings per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Earnings Per Share [Abstract]
Net income (loss)	$ (272,051)	$ 43,067	$ 61,328
Weighted average common shares outstanding (in shares)	19,212	19,258	19,163
Dilutive impact of stock-based compensation (in shares)	0	189	130
Weighted average dilutive common shares outstanding (in shares)	19,212	19,447	19,293
Earnings (loss) per share
Basic (in dollars per share)	$ (14.16)	$ 2.24	$ 3.20
Diluted (in dollars per share)	$ (14.16)	$ 2.21	$ 3.18
Antidilutive securities excluded from computation of earnings per share, loss from continuing operations (in shares)	120