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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Mar. 30, 2019
Fair Value Disclosures [Abstract] |
Schedule of Fair Value of Financial Assets and Liabilities | The following summarizes the fair value of our financial instruments at March 30, 2019 (in thousands):
| Quoted Prices in Active Markets for Identical Assets Level 1 |  | Significant Other Observable Inputs Level 2 |  | Significant Unobservable Inputs Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |
Money market funds | $ | 216,172 |  |  | $ | — |  |  | $ | — |  |  | $ | 216,172 |
Available-for-sale securities |  |  |  |  |  |  |
Corporate debt securities | $ | — |  |  | $ | 215,525 |  |  | $ | — |  |  | $ | 215,525 |
Non-US government securities | — |  |  | 13,177 |  |  | — |  |  | 13,177 |
Agency discount notes | — |  |  | 449 |  |  | — |  |  | 449 |
| $ | — |  |  | $ | 229,151 |  |  | $ | — |  |  | $ | 229,151 |
The following summarizes the fair value of our financial instruments, exclusive of pension plan assets detailed in Note 9, at March 31, 2018 (in thousands):
| Quoted Prices in Active Markets for Identical Assets Level 1 |  | Significant Other Observable Inputs Level 2 |  | Significant Unobservable Inputs Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |
Money market funds | $ | 211,891 |  |  | $ | — |  |  | $ | — |  |  | $ | 211,891 |
Available-for-sale securities |  |  |  |  |  |  |
Corporate debt securities | $ | — |  |  | $ | 183,322 |  |  | $ | — |  |  | $ | 183,322 |
Non-US government securities | — |  |  | 14,619 |  |  | — |  |  | 14,619 |
Certificates of deposit | — |  |  | 500 |  |  | — |  |  | 500 |
Agency discount notes | — |  |  | 455 |  |  | — |  |  | 455 |
| $ | — |  |  | $ | 198,896 |  |  | $ | — |  |  | $ | 198,896 |
Schedule of Fair Value of Financial Instruments Contingent Consideration | The following summarizes the fair value of the contingent consideration at March 31, 2018:
| Maximum Value if Milestones Achieved (in thousands) |  | Estimated Discount Rate (%) |  | Fair Value (in thousands)
Tranche B — 30 month earn out period | 5,000 |  |  | 7.7 |  | — |
Schedule of Fair Value of Contingent Consideration Rollforward |
|  | Fiscal Year Ended
|  | March 31, 2018
|  | (in thousands)
Beginning balance |  | $ | 4,695 |
Adjustment to estimates (research and development expense) |  | (4,328 | )
Payout of Tranche B contingent consideration |  | (392 | )
Fair value charge recognized in earnings (research and development expense) |  | 25 |
Ending balance |  | $ | — |

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
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