Income Taxes (Tables)

6 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Summary of Income Taxes

(in thousands)	Three months ended						Six months ended
	March 31, 2021			March 28, 2020			March 31, 2021			March 28, 2020
Income before income taxes	$	86,357		$	15,778		$	163,764		$	34,809
Provision (benefit) for income taxes	$	(22,905	)	$	8,622		$	30,987		$	(7,802	)
Effective income tax rate		(27	)%		55	%		19	%		(22	)%