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Note 5 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Goodwill [Table Text Block]

		Biological Indicators				Instruments				Continuous Monitoring				Cold Chain				Total
March 31, 2014		$	9,279			$	14,940			$	13,647			$	--			$	37,866
Effect of foreign currency translation			--				--				--				--				--
Acquisitions			3,708				3,295				--				--				7,003
March 31, 2015			12,987				18,235				13,647				--				44,869
Effect of foreign currency translation			(624	)			--				--				(476	)			(1,100	)
Acquisitions			8,535				--				--				13,833				22,368
March 31, 2016		$	20,898			$	18,235			$	13,647			$	13,357			$	66,137

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

(In thousands)		March 31, 201 6
		Carrying Amount				Accumulated Amortization				Net				Useful Life (Years)
Intellectual property		$	7,364			$	3,093			$	4,271			10	-	16
Trade names			3,474				1,271				2,203			3	-	10
Customer relationships			48,782				15,228				33,554			7	-	10
Non-compete agreements			1,846				1,077				769			3	-	10
		$	61,466			$	20,669			$	40,797

		March 31, 201 5
		Carrying Amount				Accumulated Amortization				Net				Useful Life (Years)
Intellectual property		$	7,210			$	2,362			$	4,848			10	-	16
Trade names			3,158				863				2,295			3	-	10
Customer relationships			36,408				10,752				25,656			7	-	10
Non-compete agreements			1,286				854				432			3	-	10
		$	48,062			$	14,831			$	33,231

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

(In thousands)
2017		$	6,125
2018			5,951
2019			5,623
2020			5,312
2021			4,279