Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 7,630	$ 8,690	$ 4,568	$ 6,890
Common stock, par or stated value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares, outstanding (in shares)	24,257,000	23,982,000