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Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2023
Concentration Risk [Line Items]
Revenue recognized	$ 2,050		$ 1,523	$ 3,716	$ 0
Accounts receivable			$ 17,970		$ 17,970	$ 15,638
Impairment loss on contract assets		$ 0		0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	130,419			130,419
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 92,525			$ 92,525
Timing of satisfaction, period	12 months			12 months
Revenue from Contract with Customer | Customer Concentration Risk | Transferred over Time
Concentration Risk [Line Items]
Percentage of concentration risk				61.00%	52.00%

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