Reportable Segments and Major Concentration Data - Significant Revenue Information by Country for Diagnostics and Life Science Reportable Segments (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]
Revenues	$ 333,018	$ 317,896	$ 253,667
Diagnostics [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	155,903	127,760	121,132
Diagnostics [Member] | United States and territories [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	130,101	99,636	95,382
Diagnostics [Member] | Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,741	12,240	9,797
Diagnostics [Member] | United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,972	2,197	2,312
Diagnostics [Member] | Belgium [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,339	1,554	1,440
Diagnostics [Member] | Holland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,051	1,279	1,183
Diagnostics [Member] | Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,699	10,854	11,018
Life Science [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	177,115	190,136	132,535
Life Science [Member] | South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	33,642	9,242	1,908
Life Science [Member] | United States and territories [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	32,450	44,785	36,689
Life Science [Member] | Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,735	7,516	4,067
Life Science [Member] | Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	17,969	18,460	14,190
Life Science [Member] | China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	15,368	13,559	19,047
Life Science [Member] | United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	12,882	13,097	14,765
Life Science [Member] | France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	11,948	10,733	5,579
Life Science [Member] | Spain [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	11,134	12,593	7,242
Life Science [Member] | Finland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10,317	17,936	2,518
Life Science [Member] | Turkey [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,858	7,281	2,819
Life Science [Member] | Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,591	6,532	3,707
Life Science [Member] | Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	4,312	9,115	5,957
Life Science [Member] | Czech Republic [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,926	922	601
Life Science [Member] | India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,257	5,558	2,099
Life Science [Member] | Switzerland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,119	632	758
Life Science [Member] | Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 4,607	$ 12,175	$ 10,589