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Fair Value Measurements - Hierarchy and Transfers (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Apr. 30, 2022
Assets
Total assets	$ 42,194	$ 51,537
Recurring basis
Assets
Marketable securities	33,402	42,621
Held-to-maturity investments	1,213	1,337
Cost basis investments	7,579	7,579
Total assets	42,194	51,537
Liabilities
Contingent consideration liability		800
Recurring basis | Level 1
Assets
Marketable securities	0	0
Held-to-maturity investments	1,213	1,337
Cost basis investments	0	0
Total assets	1,213	1,337
Liabilities
Contingent consideration liability		0
Recurring basis | Level 2
Assets
Marketable securities	24,634	33,578
Held-to-maturity investments	0	0
Cost basis investments	0	0
Total assets	24,634	33,578
Liabilities
Contingent consideration liability		0
Recurring basis | Level 3
Assets
Marketable securities	2,500	2,500
Held-to-maturity investments	0	0
Cost basis investments	7,579	7,579
Total assets	10,079	10,079
Liabilities
Contingent consideration liability		800
Recurring basis | NAV
Assets
Marketable securities	6,268	6,543
Held-to-maturity investments	0	0
Cost basis investments	0	0
Total assets	$ 6,268	6,543
Liabilities
Contingent consideration liability		$ 0

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