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Fair Value Measures (Tables) | 6 Months Ended
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Jun. 29, 2019
Fair Value Measures [Abstract] |
Schedule Of Assets And Liabilities Measured At Fair Value |
|  |  |  |  | Fair Value Measurements Using
|  | December 29, |  | Inputs
|  | 2018 |  | Level 1 |  | Level 2 |  | Level 3
Money market funds included in cash equivalents |  | $ | 129,449 |  | $ | 129,449 |  | $ | — |  | $ | —
Foreign currency contracts included in other current liabilities |  |  | (309) |  |  | — |  |  | (309) |  |  | —
|  | $ | 129,140 |  | $ | 129,449 |  | $ | (309) |  | $ | —
|  |  |  |  | Fair Value Measurements Using
|  | June 29, |  | Inputs
|  | 2019 |  | Level 1 |  | Level 2 |  | Level 3
Money market funds included in cash equivalents |  | $ | 150,661 |  | $ | 150,661 |  | $ | — |  | $ | —
Foreign currency contracts included in other current liabilities |  |  | (189) |  |  | — |  |  | (189) |  |  | —
|  | $ | 150,472 |  | $ | 150,661 |  | $ | (189) |  | $ | —

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + 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 (b) -URI http://asc.fasb.org/extlink&oid=117815213&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=117815213&loc=d3e19279-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=117815213&loc=SL7498348-110258 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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