Interim Condensed Consolidated Balance Sheets (Parenthetical) $ in Thousands	Dec. 30, 2022 USD ($) vote $ / shares shares	Sep. 30, 2022 USD ($) vote shares
Allowance for doubtful accounts | $	$ 11,173	$ 11,834
Contract assets, allowance for credit losses | $	$ 148	$ 125
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)	60,002,630	59,798,862
Common stock, shares outstanding (shares)	60,002,630	59,798,862
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)	36,085,779	36,085,779
Common stock, shares outstanding (shares)	36,085,779	36,085,779