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Goodwill and Other Intangible Assets, Net - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Apr. 30, 2022
Amortization of identifiable assets	$ 9,912	$ 8,776	$ 7,744
2023	9,905
2024	9,900
2025	9,890
2026	8,900
2027	6,645
Increase (decrease) in goodwill during the period	1,634	482
Goodwill	116,302	114,668	$ 114,186
Diagnostics [Member]
Increase (decrease) in goodwill during the period	(492)
Increase (decrease) in goodwill foreign currency translation adjustment		56
Life Science [Member]
Increase (decrease) in goodwill during the period	2,126
Increase (decrease) in goodwill foreign currency translation adjustment		433
Exalenz [Member]
Increase (decrease) in goodwill during the period		$ (7)
Euprotein [Member]
Goodwill	$ 3,947			$ 3,947