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Note 5 - Goodwill and Intangible Assets, Net - Change in the Carrying Amount of Goodwill (Details) $ in Thousands | 6 Months Ended
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Sep. 30, 2020 USD ($)
Goodwill | $ 141,536
Effect of foreign currency translation | 9,164
Goodwill adjustment related to GPT acquisition | 5,665
Goodwill | 156,365
Corporate, Non-Segment [Member] |
Goodwill | 0
Effect of foreign currency translation | 0
Goodwill adjustment related to GPT acquisition | 0
Goodwill | 0
Sterilization and Disinfection Control [Member] | Operating Segments [Member] |
Goodwill | 29,594
Effect of foreign currency translation | 500
Goodwill adjustment related to GPT acquisition | 0
Goodwill | 30,094
Instruments [Member] | Operating Segments [Member] |
Goodwill | 19,123
Effect of foreign currency translation | 60
Goodwill adjustment related to GPT acquisition | 0
Goodwill | 19,183
Biopharmaceutical Development [Member] | Operating Segments [Member] |
Goodwill | 74,716
Effect of foreign currency translation | 8,604
Goodwill adjustment related to GPT acquisition | 5,665
Goodwill | 88,985
Continuous Monitoring [Member] | Operating Segments [Member] |
Goodwill | 18,103
Effect of foreign currency translation | 0
Goodwill adjustment related to GPT acquisition | 0
Goodwill | $ 18,103

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