Earnings Per Share - Reconciliation of Amounts Utilized in Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Earnings Per Share [Abstract]
Net income (loss)	$ 22,226	$ (98,493)
Basic weighted average common shares outstanding (in shares)	31,403	33,567
Dilutive effect of share-based awards outstanding (in shares)	883	0
Diluted weighted average shares outstanding (in shares)	32,286	33,567
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.71	$ (2.93)
Diluted (in dollars per share)	$ 0.69	$ (2.93)