Major Customers and Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Customer	Jun. 30, 2012	Sep. 30, 2012
Life Science [Member]
Segment Reporting Information [Line Items]
Number of customers			2
Percentage of segment's third party sales to a customer or customer group	18.00%	11.00%	18.00%	20.00%
U.S. Diagnostics [Member]
Segment Reporting Information [Line Items]
Number of customers			2
Amounts due from customers	12.00%		12.00%		14.00%
Percentage of segment's third party sales to a customer or customer group	48.00%	49.00%	51.00%	49.00%
European Diagnostics [Member]
Segment Reporting Information [Line Items]
Amounts due from customers	18.00%		18.00%		19.00%
Percentage of segment's third party sales to a customer or customer group	33.00%	31.00%	33.00%	29.00%
Account receivable from Italian hospital customers	$ 4,600		$ 4,600		$ 4,600