Goodwill - Schedule Of Carrying Amount of Goodwill by Segment (Detail) $ in Thousands	3 Months Ended
	Dec. 31, 2017 USD ($)
Goodwill [Line Items]
Balance as of September 30, 2017	$ 27,282
Currency translation adjustment	223
Balance as of December 31, 2017	27,505
In Vitro Diagnostics [Member]
Goodwill [Line Items]
Balance as of September 30, 2017	8,010
Balance as of December 31, 2017	8,010
Medical Device [Member]
Goodwill [Line Items]
Balance as of September 30, 2017	19,272
Currency translation adjustment	223
Balance as of December 31, 2017	$ 19,495