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v3.20.1

Investments (Tables) | 12 Months Ended
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Jan. 26, 2020
Investments [Abstract] |
Summary of available-for-sale securities | The following table summarizes the values of the Company’s available-for-sale securities:
| January 26, 2020 |  | January 27, 2019
(in thousands) | Market Value |  | Adjusted Cost |  | Gross Unrealized Gain |  | Market Value |  | Adjusted Cost |  | Gross Unrealized Gain
Convertible debt | $ | 10,700 |  |  | $ | 7,544 |  |  | $ | 3,156 |  |  | $ | 3,105 |  |  | $ | 3,105 |  |  | $ | — |
Total available-for-sale securities | $ | 10,700 |  |  | $ | 7,544 |  |  | $ | 3,156 |  |  | $ | 3,105 |  |  | $ | 3,105 |  |  | $ | — |
Schedule of available-for-sale securities, classified by maturity period | The following table summarizes the maturities of the Company’s available-for-sale securities:
| January 26, 2020
(in thousands) | Market Value |  | Adjusted Cost
Within 1 year | $ | 10,200 |  |  | $ | 7,044 |
After 1 year through 5 years | 500 |  |  | 500 |
Total available-for-sale securities | $ | 10,700 |  |  | $ | 7,544 |

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