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Note 8 - Goodwill and Long-lived Assets (Tables) | 12 Months Ended
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Mar. 31, 2021
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | Sterilization and Disinfection Control |  |  | Instruments |  |  | Biopharmaceutical Development |  |  | Continuous Monitoring |  |  | Corporate and Other |  |  | Total |
March 31, 2019 |  | $ | 29,780 |  |  | $ | 18,235 |  |  |  | - |  |  | $ | 18,103 |  |  |  | 259 |  |  |  | 66,377 |
Effect of foreign currency translation |  |  | (186 | ) |  |  | (20 | ) |  |  | (2,446 | ) |  |  | - |  |  |  | (1 | ) |  |  | (2,653 | )
Acquisitions |  |  | - |  |  |  | 908 |  |  |  | 77,162 |  |  |  | - |  |  |  | - |  |  |  | 78,070 |
Impairment |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (258 | ) |  |  | (258 | )
March 31, 2020 |  |  | 29,594 |  |  |  | 19,123 |  |  | $ | 74,716 |  |  | $ | 18,103 |  |  | $ | - |  |  | $ | 141,536 |
Effect of foreign currency translation |  |  | 559 |  |  |  | 63 |  |  |  | 10,715 |  |  |  | - |  |  |  | - |  |  |  | 11,337 |
Goodwill adjustment related to GPT acquisition |  |  | - |  |  |  | - |  |  |  | 7,968 |  |  |  | - |  |  |  | - |  |  |  | 7,968 |
March 31, 2021 |  | $ | 30,153 |  |  | $ | 19,186 |  |  | $ | 93,399 |  |  | $ | 18,103 |  |  | $ | - |  |  | $ | 160,841 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | March 31, 2021 |  |  | March 31, 2020 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Intellectual property |  | $ | 21,201 |  |  | $ | (8,595 | ) |  | $ | 12,606 |  |  | $ | 15,731 |  |  | $ | (6,454 | ) |  | $ | 9,277 |
Trade names |  |  | 8,612 |  |  |  | (3,129 | ) |  |  | 5,483 |  |  |  | 5,839 |  |  |  | (2,855 | ) |  |  | 2,984 |
Customer relationships |  |  | 145,754 |  |  |  | (52,206 | ) |  |  | 93,548 |  |  |  | 146,106 |  |  |  | (38,777 | ) |  |  | 107,329 |
Non-compete agreements |  |  | 1,299 |  |  |  | (1,195 | ) |  |  | 104 |  |  |  | 1,447 |  |  |  | (1,166 | ) |  |  | 281 |
Total |  | $ | 176,866 |  |  | $ | (65,125 | ) |  | $ | 111,741 |  |  | $ | 169,123 |  |  | $ | (49,252 | ) |  | $ | 119,871 |
|  |  |  |  |  | Weighted Average |
|  | Estimated Useful Life |  |  | Remaining Life |
Description |  | (Years) |  |  | (Years) |
Intellectual Property |  |  | 10 - 15 |  |  |  | 8.4 |
Trade Name |  |  | 5 - 10 |  |  |  | 4.3 |
Customer Relationships |  |  | 5 - 10 |  |  |  | 8.5 |
Non-compete Agreements |  |  | 5 - 10 |  |  |  | 2.0 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
2022 |  | $ | 14,930 |
2023 |  |  | 14,721 |
2024 |  |  | 14,206 |
2025 |  |  | 12,612 |
2026 |  |  | 11,824 |

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