Summary of Significant Accounting Policies and Supplemental Balance Sheet Information - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Intangible Assets [Line Items]
Definite-lived intangible assets, Accumulated Amortization	$ (21,901)	$ (17,170)
Definite-lived intangible assets, Net	25,626
Intangible assets, Gross Carrying Amount	48,107	45,315
Intangible assets, Net	$ 26,206	$ 28,145
Customer Lists and Relationships [Member]
Intangible Assets [Line Items]
Definite-lived intangible assets, Weighted Average Original Life (Years)	9 years 3 months 18 days	9 years 3 months 18 days
Definite-lived intangible assets, Gross Carrying Amount	$ 11,260	$ 10,454
Definite-lived intangible assets, Accumulated Amortization	9,435	7,927
Definite-lived intangible assets, Net	$ 1,825	$ 2,527
Developed Technology [Member]
Intangible Assets [Line Items]
Definite-lived intangible assets, Weighted Average Original Life (Years)	11 years 10 months 24 days	11 years 10 months 24 days
Definite-lived intangible assets, Gross Carrying Amount	$ 33,929	$ 31,943
Definite-lived intangible assets, Accumulated Amortization	(11,048)	(7,994)
Definite-lived intangible assets, Net	$ 22,881	$ 23,949
Patents and Other [Member]
Intangible Assets [Line Items]
Definite-lived intangible assets, Weighted Average Original Life (Years)	14 years 10 months 24 days	14 years 10 months 24 days
Definite-lived intangible assets, Gross Carrying Amount	$ 2,338	$ 2,338
Definite-lived intangible assets, Accumulated Amortization	1,418	1,249
Definite-lived intangible assets, Net	920	1,089
Definite-Lived Intangible Assets [Member]
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Carrying Amount	47,527	44,735
Definite-lived intangible assets, Accumulated Amortization	(21,901)	(17,170)
Definite-lived intangible assets, Net	25,626	27,565
Trademarks and Trade Names [Member]
Intangible Assets [Line Items]
Indefinite-lived intangible assets, Net	$ 580	$ 580