Segment and Geographic Data - Information about Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 27, 2024	Apr. 29, 2023	Apr. 30, 2022
Segment Reporting Information [Line Items]
Operating income	$ 252,924	$ 275,971	$ 157,002
Depreciation and amortization	88,156	83,704	81,992
Property and equipment, net	229,081	212,283
Total assets	2,896,732	2,879,146
United States
Segment Reporting Information [Line Items]
Property and equipment, net	180,835	177,163
United Kingdom
Segment Reporting Information [Line Items]
Property and equipment, net	24,671	21,033
Canada
Segment Reporting Information [Line Items]
Property and equipment, net	23,575	14,087
Dental
Segment Reporting Information [Line Items]
Operating income	209,807	237,268	180,212
Depreciation and amortization	15,932	14,051	13,495
Total assets	913,478	853,369
Animal Health
Segment Reporting Information [Line Items]
Operating income	139,077	126,994	114,403
Depreciation and amortization	46,462	44,644	44,561
Total assets	1,568,413	1,570,760
Corporate
Segment Reporting Information [Line Items]
Operating income	(95,960)	(88,291)	(137,613)
Depreciation and amortization	25,762	25,009	$ 23,936
Total assets	$ 414,841	$ 455,017