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		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net loss - basic	$ (277,976)	$ (26,089)	$ (254,119)	$ (28,247)
Net loss - diluted	$ (277,976)	$ (26,089)	$ (254,119)	$ (28,247)
Denominator:
Weighted average common shares outstanding - basic	41,724	40,219	41,452	40,088
Weighted average common shares outstanding - diluted	41,724	40,219	41,452	40,088
Net loss per common share:
Basic	$ (6.66)	$ (0.65)	$ (6.13)	$ (0.7)
Diluted	$ (6.66)	$ (0.65)	$ (6.13)	$ (0.7)