Summary of Significant Accounting Policies and Select Balance Sheet Information - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Intangible Assets [Line Items]
Definite-lived intangible assets, Accumulated Amortization	$ (19,283)	$ (16,824)
Definite-lived intangible assets, Net	27,565
Intangible assets, Gross Carrying Amount	47,428	53,878
Intangible assets, Net	$ 28,145	$ 37,054
Customer Lists and Relationships [Member]
Intangible Assets [Line Items]
Definite-lived intangible assets, Weighted Average Original Life (Years)	8 years 10 months 24 days	8 years 10 months 24 days
Definite-lived intangible assets, Gross Carrying Amount	$ 11,354	$ 13,216
Definite-lived intangible assets, Accumulated Amortization	(8,827)	(8,878)
Definite-lived intangible assets, Net	$ 2,527	$ 4,338
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	$ 31,943	$ 36,531
Definite-lived intangible assets, Accumulated Amortization	(7,994)	(5,652)
Definite-lived intangible assets, Net	$ 23,949	$ 30,879
Patents and Other [Member]
Intangible Assets [Line Items]
Definite-lived intangible assets, Weighted Average Original Life (Years)	14 years 1 month 6 days	14 years 1 month 6 days
Definite-lived intangible assets, Gross Carrying Amount	$ 3,551	$ 3,551
Definite-lived intangible assets, Accumulated Amortization	(2,462)	(2,294)
Definite-lived intangible assets, Net	1,089	1,257
Definite-Lived Intangible Assets [Member]
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Carrying Amount	46,848	53,298
Definite-lived intangible assets, Accumulated Amortization	(19,283)	(16,824)
Definite-lived intangible assets, Net	27,565	36,474
Trademarks and Trade Names [Member]
Intangible Assets [Line Items]
Indefinite-lived intangible assets, Net	$ 580	$ 580