Reportable Segment and Major Customers Information - Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2015
Segment Reporting Information [Line Items]
NET REVENUES	$ 47,160	$ 48,013
Operating income	13,586	12,669
Goodwill	22,064		$ 22,349
Other intangible assets, net	5,465		5,931
Total assets	186,435		183,282
Inter-segment [Member] | Diagnostics [Member]
Segment Reporting Information [Line Items]
NET REVENUES	71	104
Inter-segment [Member] | Life Science [Member]
Segment Reporting Information [Line Items]
NET REVENUES	367	297
Eliminations [Member]
Segment Reporting Information [Line Items]
NET REVENUES	(438)	(401)
Operating income	20	(104)
Total assets	(272)		(327)
Operating Segments [Member] | Diagnostics [Member]
Segment Reporting Information [Line Items]
NET REVENUES	35,301	36,586
Operating income	10,330	10,284
Goodwill	1,250		1,250
Other intangible assets, net	2,236		2,364
Total assets	120,780		119,939
Operating Segments [Member] | Life Science [Member]
Segment Reporting Information [Line Items]
NET REVENUES	11,859	11,427
Operating income	3,236	$ 2,489
Goodwill	20,814		21,099
Other intangible assets, net	3,229		3,567
Total assets	$ 65,927		$ 63,670