Summary of Significant Accounting Policies and Select Balance Sheet Information - Schedule Of Carrying Amount of Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Goodwill [Line Items]
Beginning Balance	$ 26,171	$ 27,032
Foreign currency translation adjustment	1,014	(861)
Ending Balance	27,185	26,171
In Vitro Diagnostics [Member]
Goodwill [Line Items]
Beginning Balance	8,010	8,010
Ending Balance	8,010	8,010
Medical Device [Member]
Goodwill [Line Items]
Beginning Balance	18,161	19,022
Foreign currency translation adjustment	1,014	(861)
Ending Balance	$ 19,175	$ 18,161