| Fair value hierarchy for assets and liabilities measured at fair value on a recurring basis |
The following table presents the fair value hierarchy for those assets and liabilities we measured at fair value on a recurring basis at January 25, 2020 and April 27, 2019. There were no transfers into or out of Level 1, Level 2, or Level 3 for any of the periods presented. | | | | | | | | | | | | | | | | | | | | | | At January 25, 2020 | | | | | | | | | | | | | Fair Value Measurements | (Unaudited, amounts in thousands) | | Level 1 | | Level 2 | | Level 3 | | NAV(1) | | Total | Assets | | | | | | | | | | | Marketable securities | | $ | 4 |
| | $ | 33,417 |
| | $ | — |
| | $ | 7,372 |
| | $ | 40,793 |
| Held-to-maturity investments | | 3,542 |
| | — |
| | — |
| | — |
| | 3,542 |
| Cost basis investments | | — |
| | — |
| | 6,479 |
| | — |
| | 6,479 |
| Total assets | | $ | 3,546 |
| | $ | 33,417 |
| | $ | 6,479 |
| | $ | 7,372 |
| | $ | 50,814 |
| | | | | | | | | | | | Liabilities | | | | | | | | | | | Contingent consideration liability | | $ | — |
| | $ | — |
| | $ | 7,900 |
| | $ | — |
| | $ | 7,900 |
|
| | | | | | | | | | | | | | | | | | | | | | At April 27, 2019 | | | | | | | | | | | | | Fair Value Measurements | (Unaudited, amounts in thousands) | | Level 1 | | Level 2 | | Level 3 | | NAV(1) | | Total | Assets | | | | | | | | | | | Marketable securities | | $ | 5 |
| | $ | 34,390 |
| | $ | — |
| | $ | 7,706 |
| | $ | 42,101 |
| Held-to-maturity investments | | 3,341 |
| | — |
| | — |
| | — |
| | 3,341 |
| Cost basis investment | | — |
| | — |
| | 11,979 |
| | — |
| | 11,979 |
| Total assets | | $ | 3,346 |
| | $ | 34,390 |
| | $ | 11,979 |
| | $ | 7,706 |
| | $ | 57,421 |
| | | | | | | | | | | | Liabilities | | | | | | | | | | | Contingent consideration liability | | $ | — |
| | $ | — |
| | $ | 7,900 |
| | $ | — |
| | $ | 7,900 |
|
(1) Certain marketable securities investments are measured at fair value using net asset value per share under the practical expedient methodology.
|