Earnings Per Share - Schedule of Components of Basic and Diluted (Loss) Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Numerator:
Net (loss) income	$ (904)	$ 12,778	$ (33,501)	$ 15,908
Denominator:
Basic weighted-average shares (in shares)	27,990	30,119	28,464	30,274
Dilutive effect of restricted stock awards (in shares)	0	146	0	201
Dilutive effect of stock options (in shares)	0	0	0	4
Diluted weighted-average shares (in shares)	27,990	30,265	28,464	30,479
(Loss) income per share:
Basic (in USD per share)	$ (0.03)	$ 0.42	$ (1.18)	$ 0.53
Diluted (in USD per share)	$ (0.03)	$ 0.42	$ (1.18)	$ 0.52