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Note 5 - Change in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Biological Indicators [Member] |  |
Goodwill | $ 12,987 | $ 9,279
Acquisitions | 8,535 | 3,708
Goodwill | 20,898 | 12,987
Effect of foreign currency translation | (624) |
Instruments [Member] |  |
Goodwill | $ 18,235 | 14,940
Acquisitions |  | 3,295
Goodwill | $ 18,235 | 18,235
Effect of foreign currency translation |  |
Continuous Monitoring [Member] |  |
Goodwill | $ 13,647 | $ 13,647
Acquisitions |  |
Goodwill | $ 13,647 | $ 13,647
Effect of foreign currency translation |  |
Cold Chain [member] |  |
Goodwill |  |
Acquisitions | $ 13,833 |
Goodwill | 13,357 |
Effect of foreign currency translation | (476) |
Goodwill | 44,869 | $ 37,866
Acquisitions | 22,368 | 7,003
Goodwill | 66,137 | $ 44,869
Effect of foreign currency translation | $ (1,100) |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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