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Summary of Significant Accounting Policies - Schedule of Deferred Revenue Remaining Performance Obligations (Detail) - USD ($)
$ in Thousands
Jun. 30, 2025
Sep. 30, 2024
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]    
Total Deferred Revenue $ 14,590 $ 9,639
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-10-01    
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]    
Total Deferred Revenue   $ 3,932
Deferred Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period   1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-04-01    
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]    
Total Deferred Revenue $ 2,999  
Deferred Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 6 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-10-01    
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]    
Total Deferred Revenue $ 5,450 $ 2,259
Deferred Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-10-01    
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]    
Total Deferred Revenue $ 4,132 $ 2,224
Deferred Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2027-10-01    
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]    
Total Deferred Revenue $ 2,009 $ 1,192
Deferred Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2028-10-01    
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]    
Total Deferred Revenue   $ 32
Deferred Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period   1 year