CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Allowance for expected credit losses	$ 8,403	$ 5,162
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	125,000,000	125,000,000
Common stock, shares issued (in shares)	74,656,860	88,482,125
Common stock, shares outstanding (in shares)	61,194,991	75,020,256
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract]
Treasury stock, shares (in shares)	13,461,869	13,461,869