Reportable Segment Information - Segment Revenue, Operating Income and Depreciation and Amortization (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Total revenue	$ 16,699	$ 14,415	$ 33,240	$ 28,620
Operating income	2,240	3,932	6,179	8,966
Depreciation and amortization	1,387	706	2,297	1,389
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	4,304	5,627	9,777	12,240
Operating Segments [Member] | Medical Device [Member]
Segment Reporting Information [Line Items]
Total revenue	11,599	10,562	23,846	21,198
Operating income	2,322	4,696	6,152	10,212
Depreciation and amortization	968	295	1,457	565
Operating Segments [Member] | In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Total revenue	5,100	3,853	9,394	7,422
Operating income	1,982	931	3,625	2,028
Depreciation and amortization	204	216	426	430
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income	(2,064)	(1,695)	(3,598)	(3,274)
Depreciation and amortization	$ 215	$ 195	$ 414	$ 394