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Non-operating income | 9 Months Ended
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Sep. 26, 2020
Nonoperating Income (Expense) [Abstract] |
Non-operating income | 19. Non-operating income Non-operating income consists of the following (in thousands):
| Three Months Ended |  |  |  | Nine Months Ended |  |
| September 26, 2020 |  | September 28, 2019 |  | September 26, 2020 |  | September 28, 2019
Interest income | $ | 797 |  |  | $ | 3,664 |  |  | $ | 5,120 |  |  | $ | 10,706 |
Interest expense | (84) |  |  | (82) |  |  | (250) |  |  | (243) |
Realized and unrealized foreign currency gains | 647 |  |  | (856) |  |  | 1,246 |  |  | (315) |
Other | (3) |  |  | (3) |  |  | (8) |  |  | (10) |
Total | $ | 1,357 |  |  | $ | 2,723 |  |  | $ | 6,108 |  |  | $ | 10,138 |

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- Definition The entire disclosure for the components of non-operating income or non-operating expense, including, but not limited to, amounts earned from dividends, interest on securities, gain (loss) on securities sold, equity earnings of unconsolidated affiliates, gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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