Goodwill and Other Intangible Assets - Changes in Carrying Value of Goodwill (Details) $ in Thousands	12 Months Ended
	Apr. 30, 2022 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 139,932
Acquisition Activity	997
Foreign Currency Translation	(299)
Ending Balance	140,630
Operating Segments | Dental net sales
Goodwill [Roll Forward]
Beginning Balance	139,932
Acquisition Activity	0
Foreign Currency Translation	(299)
Ending Balance	139,633
Operating Segments | Animal Health net sales
Goodwill [Roll Forward]
Beginning Balance	0
Acquisition Activity	997
Foreign Currency Translation	0
Ending Balance	997
Operating Segments | Corporate net sales
Goodwill [Roll Forward]
Beginning Balance	0
Acquisition Activity	0
Foreign Currency Translation	0
Ending Balance	$ 0