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Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets

Schedule of change in the carrying amount of goodwill

The change in the carrying amount of goodwill was as follows (in thousands):

		Biological Indicators			Instruments			Total
April 1, 2011		$	9,279		$	5,171		$	14,450
Acquisitions		—			—			—
March 31, 2012		9,279			5,171			14,450
Acquisitions		—			9,190			9,190
March 31, 2013		$	9,279		$	14,361		$	23,640

Schedule of other intangible assets

		March 31, 2013
(In thousands)		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

		March 31, 2012
		Carrying Amount			Accumulated Amortization			Net			Useful Life (Years)
Intellectual property		$	4,091		$	542		$	3,549		10-16
Trade names		1,596			27			1,569			10
Customer relationships		8,185			3,555			4,630			7-8.5
Non-compete agreements		523			452			71			3-5
		$	14,395		$	4,576		$	9,819

Schedule of estimated amortization expense

The following is estimated amortization expense for the years ending March 31:

(In thousands)
2014		$	2,355
2015		2,324
2016		2,304
2017		2,186
2018		2,043

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Tabular disclosure of the estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years.

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

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