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Fair Value Measurements and Fair Value of Financial Instruments - Fair Value of Assets and Liabilities Measured on a Recurring Basis (Details) - Recurring [Member] - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 30, 2017
--- | --- | ---
Assets: |  |
Money market funds and time deposits | $ 3,579 | $ 17,728
Forward currency-exchange contract |  | 17
2015 Swap Agreement | 209 | 126
Banker's acceptance drafts | 10,735 | 15,960
Liabilities: |  |
Forward currency-exchange contracts | 52 | 16
2018 Swap Agreement | 210 |
Level 1 [Member] |  |
Assets: |  |
Money market funds and time deposits | 3,579 | 17,728
Forward currency-exchange contract |  | 0
2015 Swap Agreement | 0 | 0
Banker's acceptance drafts | 0 | 0
Liabilities: |  |
Forward currency-exchange contracts | 0 | 0
2018 Swap Agreement | 0 |
Level 2 [Member] |  |
Assets: |  |
Money market funds and time deposits | 0 | 0
Forward currency-exchange contract |  | 17
2015 Swap Agreement | 209 | 126
Banker's acceptance drafts | 10,735 | 15,960
Liabilities: |  |
Forward currency-exchange contracts | 52 | 16
2018 Swap Agreement | 210 |
Level 3 [Member] |  |
Assets: |  |
Money market funds and time deposits | 0 | 0
Forward currency-exchange contract |  | 0
2015 Swap Agreement | 0 | 0
Banker's acceptance drafts | 0 | 0
Liabilities: |  |
Forward currency-exchange contracts | 0 | $ 0
2018 Swap Agreement | $ 0 |

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Amounts receivable from customers on short-term negotiable time drafts drawn on and accepted by the institution (also known as banker's acceptance transactions) that are outstanding on the reporting date. + References No definition available. + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 + Details
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- Definition Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps. + References No definition available. + Details
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Period Type: | instant

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- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
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