Goodwill - Schedule of Carrying Amount of Goodwill by Segment (Detail) $ in Thousands	6 Months Ended
	Mar. 31, 2021 USD ($)
Goodwill [Line Items]
Goodwill as of September 30, 2020	$ 27,185
Currency translation adjustment	5
Goodwill as of March 31, 2021	27,190
In Vitro Diagnostics [Member]
Goodwill [Line Items]
Goodwill as of September 30, 2020	8,010
Goodwill as of March 31, 2021	8,010
Medical Device [Member]
Goodwill [Line Items]
Goodwill as of September 30, 2020	19,175
Currency translation adjustment	5
Goodwill as of March 31, 2021	$ 19,180