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Note 5 - Goodwill and Intangible Assets (Tables) | 12 Months Ended
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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 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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