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v3.19.3

Cash and Investments (Tables) | 9 Months Ended
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Sep. 27, 2019
Investments, Debt and Equity Securities [Abstract] |
Reconciliation of Cash, Cash Equivalents, and Restricted Cash | A reconciliation of Cash, cash equivalents, and restricted cash reported within our Condensed Consolidated Balance Sheets to the amount reported within the accompanying Condensed Consolidated Statements of Cash Flows was as follows (in thousands):
| September 30, 2019 |  | December 31, 2018 |  | September 30, 2018 |  | December 31, 2017
Cash and cash equivalents | $ | 242,317 |  |  | $ | 314,775 |  |  | $ | 353,623 |  |  | $ | 183,164 |
Restricted cash included in short-term restricted cash and investments | — |  |  | — |  |  | 504 |  |  | 504 |
Restricted cash included in long-term restricted cash and investments | 1,000 |  |  | 1,100 |  |  | 1,100 |  |  | 4,646 |
Cash, cash equivalents, and restricted cash as reported within the accompanying Condensed Consolidated Statements of Cash Flows | $ | 243,317 |  |  | $ | 315,875 |  |  | $ | 355,227 |  |  | $ | 188,314 |
Reconciliation of Cash, Cash Equivalents, and Restricted Cash | A reconciliation of Cash, cash equivalents, and restricted cash reported within our Condensed Consolidated Balance Sheets to the amount reported within the accompanying Condensed Consolidated Statements of Cash Flows was as follows (in thousands):
| September 30, 2019 |  | December 31, 2018 |  | September 30, 2018 |  | December 31, 2017
Cash and cash equivalents | $ | 242,317 |  |  | $ | 314,775 |  |  | $ | 353,623 |  |  | $ | 183,164 |
Restricted cash included in short-term restricted cash and investments | — |  |  | — |  |  | 504 |  |  | 504 |
Restricted cash included in long-term restricted cash and investments | 1,000 |  |  | 1,100 |  |  | 1,100 |  |  | 4,646 |
Cash, cash equivalents, and restricted cash as reported within the accompanying Condensed Consolidated Statements of Cash Flows | $ | 243,317 |  |  | $ | 315,875 |  |  | $ | 355,227 |  |  | $ | 188,314 |
Investments by Security Type | Cash and investments by security type were as follows (in thousands):
| September 30, 2019
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Investments available-for-sale: |  |  |  |  |  |  |
Money market funds | $ | 26,641 |  |  | $ | — |  |  | $ | — |  |  | $ | 26,641 |
Commercial paper | 332,239 |  |  | — |  |  | — |  |  | 332,239 |
Corporate bonds | 703,325 |  |  | 3,549 |  |  | (67 | ) |  | 706,807 |
U.S. Treasury and government sponsored enterprises | 152,531 |  |  | 143 |  |  | (24 | ) |  | 152,650 |
Total investments available-for-sale | 1,214,736 |  |  | 3,692 |  |  | (91 | ) |  | 1,218,337 |
Cash and restricted cash | 901 |  |  | — |  |  | — |  |  | 901 |
Certificates of deposit | 29,189 |  |  | 3 |  |  | — |  |  | 29,192 |
Total cash and investments | $ | 1,244,826 |  |  | $ | 3,695 |  |  | $ | (91 | ) |  | $ | 1,248,430 |
| December 31, 2018
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Investments available-for-sale: |  |  |  |  |  |  |
Money market funds | $ | 47,744 |  |  | $ | — |  |  | $ | — |  |  | $ | 47,744 |
Commercial paper | 381,134 |  |  | — |  |  | (1 | ) |  | 381,133 |
Corporate bonds | 344,741 |  |  | 180 |  |  | (857 | ) |  | 344,064 |
U.S. Treasury and government sponsored enterprises | 55,224 |  |  | 2 |  |  | (25 | ) |  | 55,201 |
Total investments available-for-sale | 828,843 |  |  | 182 |  |  | (883 | ) |  | 828,142 |
Cash and restricted cash | 6,883 |  |  | — |  |  | — |  |  | 6,883 |
Certificates of deposit | 16,596 |  |  | — |  |  | — |  |  | 16,596 |
Total cash and investments | $ | 852,322 |  |  | $ | 182 |  |  | $ | (883 | ) |  | $ | 851,621 |
Fair Value and Gross Unrealized Losses of Investments Available-for-Sale in an Unrealized Loss Position | The fair value and gross unrealized losses on investments available-for-sale in an unrealized loss position were as follows (in thousands):
| September 30, 2019
| In an Unrealized Loss Position Less than 12 Months |  | In an Unrealized Loss Position 12 Months or Greater |  | Total
| Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Corporate bonds | $ | 73,064 |  |  | $ | (66 | ) |  | $ | 4,398 |  |  | $ | (1 | ) |  | $ | 77,462 |  |  | $ | (67 | )
U.S. Treasury and government sponsored enterprises | 46,744 |  |  | (24 | ) |  | — |  |  | — |  |  | 46,744 |  |  | (24 | )
Total | $ | 119,808 |  |  | $ | (90 | ) |  | $ | 4,398 |  |  | $ | (1 | ) |  | $ | 124,206 |  |  | $ | (91 | )
| December 31, 2018
| In an Unrealized Loss Position Less than 12 Months |  | In an Unrealized Loss Position 12 Months or Greater |  | Total
| Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Corporate bonds | $ | 236,162 |  |  | $ | (606 | ) |  | $ | 39,627 |  |  | $ | (251 | ) |  | $ | 275,789 |  |  | $ | (857 | )
U.S. Treasury and government sponsored enterprises | 28,105 |  |  | (16 | ) |  | 9,182 |  |  | (9 | ) |  | 37,287 |  |  | (25 | )
Commercial paper | 7,091 |  |  | (1 | ) |  | — |  |  | — |  |  | 7,091 |  |  | (1 | )
Total | $ | 271,358 |  |  | $ | (623 | ) |  | $ | 48,809 |  |  | $ | (260 | ) |  | $ | 320,167 |  |  | $ | (883 | )
Fair Value of Cash Equivalents and Investments by Contractual Maturity | The fair value of investments available-for-sale by contractual maturity were as follows (in thousands):
| September 30, 2019 |  | December 31, 2018
Maturing in one year or less | $ | 743,768 |  |  | $ | 674,455 |
Maturing after one year through five years | 474,569 |  |  | 153,687 |
Total investments available-for-sale | $ | 1,218,337 |  |  | $ | 828,142 |

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