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v3.19.2

Fair Value Measurements - Hierarchy and Transfers (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 27, 2019 | Apr. 28, 2018
Assets |  |
Total assets | $ 57,421 | $ 59,354
Liabilities |  |
Transfers from Level 1 to Level 2 assets | 0 | 0
Transfers from Level 2 to Level 1 assets | 0 | 0
Transfers from Level 1 to Level 2 liabilities | 0 | 0
Transfers from Level 2 to Level 1 liabilities | 0 | 0
Transfers into Level 3 assets | 0 | 0
Transfers out of Level 3 assets | 0 | 0
Transfers into Level 3 liabilities | 0 | 0
Transfers out of Level 3 liabilities | 0 | 0
Recurring basis | Level 1 |  |
Assets |  |
Marketable securities | 5 | 1,141
Held-to-maturity investments | 3,341 | 3,340
Total assets | 3,346 | 4,481
Recurring basis | Level 2 |  |
Assets |  |
Marketable securities | 34,390 | 37,173
Total assets | 34,390 | 37,173
Recurring basis | Level 3 |  |
Assets |  |
Cost basis investments | 11,979 | 10,954
Total assets | 11,979 | 10,954
Liabilities |  |
Contingent consideration liability | $ 7,900 | $ 344

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