Fair Value Measurements - Hierarchy and Transfers (Details) - USD ($) $ in Thousands	Apr. 29, 2023	Apr. 30, 2022
Assets
Total assets	$ 24,903	$ 51,537
Recurring basis
Assets
Marketable securities	23,552	42,621
Held-to-maturity investments	1,351	1,337
Cost basis investments		7,579
Total assets	24,903	51,537
Liabilities
Contingent consideration liability		800
Recurring basis | Level 1
Assets
Marketable securities	0	0
Held-to-maturity investments	1,351	1,337
Cost basis investments		0
Total assets	1,351	1,337
Liabilities
Contingent consideration liability		0
Recurring basis | Level 2
Assets
Marketable securities	16,557	33,578
Held-to-maturity investments	0	0
Cost basis investments		0
Total assets	16,557	33,578
Liabilities
Contingent consideration liability		0
Recurring basis | Level 3
Assets
Marketable securities	0	2,500
Held-to-maturity investments	0	0
Cost basis investments		7,579
Total assets	0	10,079
Liabilities
Contingent consideration liability		800
Recurring basis | NAV
Assets
Marketable securities	6,995	6,543
Held-to-maturity investments	0	0
Cost basis investments		0
Total assets	$ 6,995	6,543
Liabilities
Contingent consideration liability		$ 0