Note 6 - Goodwill and Intangible Assets - Change in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Goodwill	$ 291,166	$ 160,841
Effect of foreign currency translation	(7,543)	(5,555)
Goodwill	286,444	291,166
Agena [Member]
Goodwill adjustment related to acquisition		135,880
Measurement period adjustment - Agena Acquisition	(152)
Belyntic Acquisition [Member]
Goodwill adjustment related to acquisition	2,973
Clinical Genomics [Member]
Goodwill	135,811
Clinical Genomics [Member] \| Agena [Member]
Measurement period adjustment - Agena Acquisition	(152)
Clinical Genomics [Member] \| Belyntic Acquisition [Member]
Goodwill adjustment related to acquisition	0
Clinical Genomics [Member] \| Operating Segments [Member]
Goodwill	135,914	0
Effect of foreign currency translation	49	34
Goodwill		135,914
Clinical Genomics [Member] \| Operating Segments [Member] \| Agena [Member]
Goodwill adjustment related to acquisition		135,880
Sterilization and Disinfection Control [Member]
Goodwill	29,559
Sterilization and Disinfection Control [Member] \| Agena [Member]
Measurement period adjustment - Agena Acquisition	0
Sterilization and Disinfection Control [Member] \| Belyntic Acquisition [Member]
Goodwill adjustment related to acquisition	0
Sterilization and Disinfection Control [Member] \| Operating Segments [Member]
Goodwill	29,750	30,153
Effect of foreign currency translation	(191)	(403)
Goodwill		29,750
Sterilization and Disinfection Control [Member] \| Operating Segments [Member] \| Agena [Member]
Goodwill adjustment related to acquisition		0
Biopharmaceutical Development [Member]
Goodwill	83,857
Biopharmaceutical Development [Member] \| Agena [Member]
Measurement period adjustment - Agena Acquisition	0
Biopharmaceutical Development [Member] \| Belyntic Acquisition [Member]
Goodwill adjustment related to acquisition	2,973
Biopharmaceutical Development [Member] \| Operating Segments [Member]
Goodwill	88,265	93,399
Effect of foreign currency translation	(7,381)	(5,134)
Goodwill		88,265
Biopharmaceutical Development [Member] \| Operating Segments [Member] \| Agena [Member]
Goodwill adjustment related to acquisition		0
Calibration Solutions [Member]
Goodwill	37,217
Calibration Solutions [Member] \| Agena [Member]
Measurement period adjustment - Agena Acquisition	0
Calibration Solutions [Member] \| Belyntic Acquisition [Member]
Goodwill adjustment related to acquisition	0
Calibration Solutions [Member] \| Operating Segments [Member]
Goodwill	37,237	37,289
Effect of foreign currency translation	$ (20)	(52)
Goodwill		37,237
Calibration Solutions [Member] \| Operating Segments [Member] \| Agena [Member]
Goodwill adjustment related to acquisition		$ 0

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