Earnings Per Share - Schedule of Reconciliation of Basic Shares to Diluted Shares (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Numerator:
Net (loss) income - basic	$ (24,288)	$ 23,857
Interest on the Notes, net of tax		2,250
Net (loss) income - diluted	$ (24,288)	$ 26,107
Denominator:
Weighted average common shares outstanding - basic	42,897	41,186
Dilutive effect of contingently issuable stock awards		574
Dilutive effect of the Notes		7,495
Weighted average common shares outstanding - diluted	42,897	49,255
Net income per common share:
Basic	$ (0.57)	$ 0.58
Diluted	$ (0.57)	$ 0.53