Segment and Geographical Information - Segment Revenue, Operating (Loss) Income and Depreciation and Amortization (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total revenue	$ 17,013	$ 17,761
Operating (loss) income	(633)	3,268
Depreciation and amortization	1,520	1,282
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	1,281	5,175
Operating Segments [Member] | Medical Device [Member]
Segment Reporting Information [Line Items]
Total revenue	12,774	13,757
Operating (loss) income	(389)	3,719
Depreciation and amortization	1,272	1,004
Operating Segments [Member] | In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Total revenue	4,239	4,004
Operating (loss) income	1,670	1,456
Depreciation and amortization	90	103
Corporate [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(1,914)	(1,907)
Depreciation and amortization	$ 158	$ 175