Nature of Operations and Summary of Significant Accounting Policies - Schedule of Net revenue by geographic location (Detail) - USD ($)	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Revenue From External Customers By Geographic Areas [Line Items]
Net revenue	$ 115,437,000	$ 113,166,000
Americas [Member]
Revenue From External Customers By Geographic Areas [Line Items]
Net revenue	103,101,000	97,627,000
CANADA
Revenue From External Customers By Geographic Areas [Line Items]
Net revenue	12,166,000	12,607,000
Other Foreign Countries [Member]
Revenue From External Customers By Geographic Areas [Line Items]
Net revenue	$ 170,000	$ 2,932,000