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Note 5 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

		Biological Indicators				Instruments				Continuous Monitoring				Total
April 1, 2012		$	9,279			$	5,171			$	--			$	14,450
Acquisitions			--				9,190				--				9,190
March 31, 2013			9,279				14,361				--				23,640
Acquisitions			--				579				13,647				14,226
March 31, 2014		$	9,279			$	14,940			$	13,647			$	37,866

Schedule of Finite-Lived Intangible Assets [Table Text Block]

(In thousands)		March 31, 2014
		Carrying Amount				Accumulated Amortization				Net			Useful Life (Years)
Intellectual property		$	7,027			$	1,641			$	5,386		10-16
Trade names			2,648				519				2,129		3-10
Customer relationships			24,612				7,326				17,286		7-10
Non-compete agreements			1,286				670				616		3-10
		$	35,573			$	10,156			$	25,417

		March 31, 2013
		Carrying Amount				Accumulated Amortization				Net			Useful Life (Years)
Intellectual property		$	4,991			$	1,037			$	3,954		10-16
Trade names			2,296				248				2,048		10
Customer relationships			14,485				5,345				9,140		7-8.5
Non-compete agreements			823				547				276		3-5
		$	22,595			$	7,177			$	15,418

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(In thousands)
2015		$	3,711
2016			3,690
2017			3,550
2018			3,376
2019			3,048

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Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

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Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

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

-Publisher FASB

-Name Accounting Standards Codification

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Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

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-Topic 350

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