Interim Condensed Consolidated Balance Sheets (Parenthetical) $ in Thousands	Apr. 01, 2022 USD ($) vote $ / shares shares	Sep. 24, 2021 USD ($) vote shares
Allowance for doubtful accounts | $	$ 10,156	$ 8,744
Contract assets, allowance for credit losses | $	$ 125	$ 208
Class A Common Stock [Member]
Common stock, par value (usd per share) | $ / shares	$ 0.001
Common stock voting right per share (votes per share) | vote	1
Common stock, shares authorized (shares)	500,000,000	500,000,000
Common stock, shares issued (shares)	64,789,579	64,986,316
Common stock, shares outstanding (shares)	64,789,579	64,986,316
Class B Common Stock [Member]
Common stock, par value (usd per share) | $ / shares	$ 0.001
Common stock voting right per share (votes per share) | vote	10	10
Common stock, shares authorized (shares)	500,000,000	500,000,000
Common stock, shares issued (shares)	36,086,629	36,086,779
Common stock, shares outstanding (shares)	36,086,629	36,086,779