Revenue Recognition - Summary of Disaggregation of Revenue by Reportable Segment and Geographic Region (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 333,018	$ 317,896	$ 253,667
Diagnostics [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	155,903	127,760	121,132
Diagnostics [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	132,175	101,293	97,228
Diagnostics [Member] | EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	22,135	24,475	21,826
Diagnostics [Member] | ROW [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,593	1,992	2,078
Life Science [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	177,115	190,136	132,535
Life Science [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	33,062	46,063	37,391
Life Science [Member] | EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	81,305	93,655	58,125
Life Science [Member] | ROW [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 62,748	$ 50,418	$ 37,019