Goodwill - Schedule of Carrying Amount of Goodwill by Segment (Detail) $ in Thousands	6 Months Ended
	Mar. 31, 2020 USD ($)
Goodwill [Line Items]
Balance as of September 30, 2019	$ 26,171
Currency translation adjustment	105
Balance as of March 31, 2020	26,276
In Vitro Diagnostics [Member]
Goodwill [Line Items]
Balance as of September 30, 2019	8,010
Balance as of March 31, 2020	8,010
Medical Device [Member]
Goodwill [Line Items]
Balance as of September 30, 2019	18,161
Currency translation adjustment	105
Balance as of March 31, 2020	$ 18,266