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Note 16 - Segment Data (Tables)

12 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		Year Ended March 31, 2020
		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Revenues (1)		$	49,660			$	37,984			$	13,851			$	13,729			$	2,463			$	117,687
Gross profit (loss)		$	35,758			$	24,229			$	382			$	4,146			$	418			$	64,933
Reconciling items (2)																							(61,500	)
Earnings before income taxes																						$	3,433

		Year Ended March 31, 2019
		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Revenues (1)		$	46,297			$	36,125			$	--			$	13,806			$	6,907			$	103,135
Gross profit		$	31,861			$	22,866			$	--			$	5,582			$	607			$	60,916
Reconciling items (2)																							(52,293	)
Earnings before income taxes																						$	8,623

		Year Ended March 31, 2018
		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Revenues (1)		$	43,260			$	34,104			$	--			$	12,978			$	5,837			$	96,179
Gross profit		$	29,333			$	20,395			$	--			$	3,854			$	1,037			$	54,619
Reconciling items (2)																							(54,318	)
Earnings before income taxes																						$	301

		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Year ended March 31, 2020		$	291			$	165			$	233			$	201			$	608			$	1,498
Year ended March 31, 2019			384				56				--				254				568				1,262
Year ended March 31, 2018			1,007				254				--				483				1,055				2,799

		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Year ended March 31, 2020		$	902			$	179			$	358			$	328			$	11,223			$	12,990
Year ended March 31, 2019			902				207				--				272				8,047				9,428
Year ended March 31, 2018			823				263				--				327				8,058				9,471

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

		March 31, 2020				March 31, 2019
Sterilization and Disinfection Control		$	73,103			$	74,230
Instruments			31,025				30,911
Biopharmaceutical Development			182,758				--
Continuous Monitoring			29,732				32,179
Corporate and Other			103,588				19,447
Total		$	420,206			$	156,767

Long-lived Assets by Geographic Areas [Table Text Block]

		As of March 31,
		2020				2019
United States		$	34,767			$	22,974
Foreign			1,240				574
Total long-lived assets		$	36,007			$	23,548

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

		Year Ended March 31,
		2020				2019				2018
United States		$	66,344			$	64,828			$	56,998
Foreign			51,343				38,307				39,181
Total revenues		$	117,687			$	103,135			$	96,179

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