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v3.21.1

Marketable Securities (Tables) | 12 Months Ended
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Mar. 27, 2021
Marketable Securities [Abstract] |
Schedule of Available-for-sale Securities | The following table is a summary of available-for-sale securities (in thousands):
As of March 27, 2021 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value (Net Carrying Amount)
Corporate debt securities | $ | 348,971 |  |  | $ | 3,403 |  |  | $ | (313) |  |  | $ | 352,061 |
Non-U.S. government securities | 13,462 |  |  | 172 |  |  | (1) |  |  | 13,633 |
Agency discount notes | 2,759 |  |  | 4 |  |  | (1) |  |  | 2,762 |
Total securities | $ | 365,192 |  |  | $ | 3,579 |  |  | $ | (315) |  |  | $ | 368,456 |
As of March 28, 2020 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value (Net Carrying Amount)
Corporate debt securities | $ | 286,668 |  |  | $ | 1,157 |  |  | $ | (3,993) |  |  | $ | 283,832 |
Non-U.S. government securities | 12,483 |  |  | 260 |  |  | — |  |  | 12,743 |
U.S. Treasury securities | 8,839 |  |  | 167 |  |  | — |  |  | 9,006 |
Total securities | $ | 307,990 |  |  | $ | 1,584 |  |  | $ | (3,993) |  |  | $ | 305,581 |
Schedule of Cost and Estimated Fair Value of Available-for-sale Securities by Contractual Maturity | The cost and estimated fair value of available-for-sale investments by contractual maturity were as follows:
| March 27, 2021 |  | March 28, 2020
| Amortized Cost |  | Estimated Fair Value |  | Amortized Cost |  | Estimated Fair Value
Within 1 year | $ | 54,895 |  |  | $ | 55,698 |  |  | $ | 22,012 |  |  | $ | 22,008 |
After 1 year | 310,297 |  |  | 312,758 |  |  | 285,978 |  |  | 283,573 |
Total | $ | 365,192 |  |  | $ | 368,456 |  |  | $ | 307,990 |  |  | $ | 305,581 |

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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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