Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 29, 2023	Apr. 30, 2022	Apr. 24, 2021
Schedule of Investments [Line Items]
Noncash gain on investment	$ 0	$ 101,809	$ 0
Gains on investments	0	101,809	$ 0
Estimated fair value of debt	483,139	489,777
Long-term debt	487,231	488,554
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		4,009,000
Proceeds from sale of investment		17,101
Gain on sale of investment		13,092
Investment	$ 2,299	$ 2,355

Equity Method Investment, Put Option, Carrying Value

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Amount of gain (loss) on sale or disposal of an equity method investment.

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Amount of the entity's equity method investment which has been sold.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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