Operating Segment Information - Segment Revenue, Operating Income and Depreciation and Amortization (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total revenue	$ 14,205us-gaap_Revenues	$ 13,883us-gaap_Revenues
Operating income	5,034us-gaap_OperatingIncomeLoss	4,329us-gaap_OperatingIncomeLoss
Depreciation and amortization	683	697
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	6,613	5,999
Operating Segments [Member] \| Medical Device [Member]
Segment Reporting Information [Line Items]
Total revenue	10,635	10,549
Operating income	5,515	5,328
Depreciation and amortization	270	294
Operating Segments [Member] \| In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Total revenue	3,570	3,334
Operating income	1,098	671
Depreciation and amortization	213	214
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income	(1,579)	(1,670)
Depreciation and amortization	$ 200	$ 189

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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