Acquisitions - Additional Information (Detail) - USD ($)		12 Months Ended
	Jul. 02, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Revenue		$ 105,136,000	$ 94,864,000	$ 100,077,000
Net (loss) income		4,237,000	$ 1,123,000	$ 7,592,000
Acquisition transaction, integration and other costs		1,049,000
Vetex Medical Limited [Member]
Business Acquisition [Line Items]
Cash paid	$ 39,900,000
Deferred consideration, contractual value	$ 3,500,000
Installment payment beginning period	2024
Installment payment ending period	2027
Contingent consideration, contractual value	$ 3,500,000
Contingency period ending year	2027
Revenue		0
Net (loss) income		(900,000)
Acquisition transaction, integration and other costs		$ 1,000,000.0
Vetex Medical Limited [Member] | Developed Technology [Member]
Business Acquisition [Line Items]
Acquired intangible assets amortized on straight-line basis, estimated useful life		12 years
Vetex Medical Limited [Member] | Secured Revolving Credit Facility [Member]
Business Acquisition [Line Items]
Business combination, consideration transferred, liabilities incurred	$ 10,000,000.0