Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 27, 2024	Apr. 29, 2023	Apr. 30, 2022
Schedule of Investments [Line Items]
Noncash gain on investment	$ 0	$ 0	$ 101,809
Gains on investments	0	0	101,809
Estimated fair value of debt	448,287	483,139
Long-term debt	451,661	487,231
Vetsource
Schedule of Investments [Line Items]
Carrying value of investment sold			25,814
Proceeds from sale of investment			56,849
Gain on sale of investment			31,035
Noncash gain on investment			31,035
Investment	56,849	56,849
Gain on investment put option			25,757
Carrying value of put option	25,757
Gains on investments	87,827
Vets Plus
Schedule of Investments [Line Items]
Carrying value of investment sold			4,009
Proceeds from sale of investment			17,101
Gain on sale of investment			$ 13,092
Investment	$ 2,299	$ 2,299