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Non-operating income Non-operating income | 9 Months Ended
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Sep. 28, 2019
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 28, 2019 |  | September 29, 2018 |  | September 28, 2019 |  | September 29, 2018
Interest income | $ | 3,664 |  |  | $ | 2,326 |  |  | $ | 10,706 |  |  | $ | 5,247 |
Interest expense | (82 | ) |  | (7 | ) |  | (243 | ) |  | (694 | )
Realized and unrealized foreign currency loss | (856 | ) |  | (1,311 | ) |  | (315 | ) |  | (764 | )
Other | (3 | ) |  | 20 |  |  | (10 | ) |  | 291 |
Total | $ | 2,723 |  |  | $ | 1,028 |  |  | $ | 10,138 |  |  | $ | 4,080 |

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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 No definition available. + Details
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