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Note 2 - Revenue Recognition (Tables)

12 Months Ended

Mar. 31, 2020

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Year Ended March 31, 2020
		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Discrete Revenues
Consumables		$	42,654			$	3,197			$	4,981			$	43			$	2,436			$	53,311
Hardware and Software			551				25,627				6,015				7,897				--				40,090
Services			1,592				9,160				1,761				2,396				27				14,936
Contracted Revenues
Services			4,863				--				1,094				3,393				--				9,350
Total Revenues		$	49,660			$	37,984			$	13,851			$	13,729			$	2,463			$	117,687

		Year Ended March 31, 2019
		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Discrete Revenues
Consumables		$	39,670			$	3,101			$	--			$	388			$	6,430			$	49,589
Hardware and Software			580				24,500				--				6,987				142				32,209
Services			1,209				8,524				--				2,001				335				12,069
Contracted Revenues
Services			4,838				--				--				4,430				--				9,268
Total Revenues		$	46,297			$	36,125			$	--			$	13,806			$	6,907			$	103,135

		Year Ended March 31, 2018
		Sterilization and Disinfection Control				Instruments				Biopharmaceutical Development				Continuous Monitoring				Corporate and Other				Total
Discrete Revenues
Consumables		$	36,436			$	3,080			$	--			$	261			$	5,197			$	44,974
Hardware and Software			925				23,345				--				5,051				91				29,412
Services			1,110				7,679				--				2,017				549				11,355
Contracted Revenues
Services			4,789				--				--				5,649				--				10,438
Total Revenues		$	43,260			$	34,104			$	--			$	12,978			$	5,837			$	96,179

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

Contract liabilities balance as of March 31, 2019		$	4,426
Prior year liabilities recognized in revenues during the Year Ended March 31, 2020			(4,741	)
Contract liabilities added during the Year Ended March 31, 2020, net of revenues recognized			7,532
Contract liabilities balance as of March 31, 2020		$	7,217

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

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- References

No definition available.

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Period Type:	duration