CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Sep. 30, 2023		54,840
Beginning balance at Sep. 30, 2023	$ 745,768	$ 549	$ 346,181	$ 431,140	$ (32,102)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation	2,264		2,264
Release of restricted stock, net of shares withheld for taxes (in shares)		758
Release of restricted stock, net of shares withheld for taxes	8	$ 8
Taxes paid related to net share settlement of equity awards	(3,253)		(3,253)
Foreign currency translation gain (loss)	4,633				4,633
Purchase and retirement of treasury stock (in shares)		(355)
Purchase and retirement of treasury stock	(3,007)	$ (4)	(1,322)	(1,681)
Net income	28,470			28,470
Ending balance (in shares) at Dec. 31, 2023		55,243
Ending balance at Dec. 31, 2023	774,883	$ 553	343,870	457,929	(27,469)
Beginning balance (in shares) at Sep. 30, 2024		54,553
Beginning balance at Sep. 30, 2024	804,571	$ 546	348,366	507,206	(51,547)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation	2,597		2,597
Release of restricted stock, net of shares withheld for taxes (in shares)		718
Release of restricted stock, net of shares withheld for taxes	0	$ 7	(7)
Taxes paid related to net share settlement of equity awards	(3,971)		(3,971)
Foreign currency translation gain (loss)	(7,319)				(7,319)
Purchase and retirement of treasury stock (in shares)		(250)
Purchase and retirement of treasury stock	(3,000)	$ (3)	(1,202)	(1,795)
Net income	31,016			31,016
Ending balance (in shares) at Dec. 31, 2024		55,021
Ending balance at Dec. 31, 2024	$ 823,894	$ 550	$ 345,783	$ 536,427	$ (58,866)