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Inventory (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 29, 2018 | Jun. 30, 2017 | Dec. 29, 2017
Inventory [Line Items] |  |  |
Raw materials | $ 2,134 |  | $ 498
Work in process | 3,737 |  | 3,997
Finished goods | 3,265 |  | 2,854
Total | 9,136 |  | 7,349
Write-downs on inventory | 500 | $ 500 |
Inventory |  |  |
Inventory [Line Items] |  |  |
Total | 8,371 |  | 6,657
Other long-term assets |  |  |
Inventory [Line Items] |  |  |
Total | $ 765 |  | $ 692

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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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