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Inventory (Schedule of Inventory) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2017 | Dec. 30, 2016 | Jan. 01, 2016
Inventory [Line Items] |  |  |
Raw materials | $ 498 | $ 863 |
Work in process | 3,997 | 2,343 |
Finished goods | 2,854 | 738 |
Total | 7,349 | 3,944 |
Inventory write-down | 1,200 | 500 | $ 1,200
Inventory [Member] |  |  |
Inventory [Line Items] |  |  |
Total | 6,657 | 3,338 |
Other long-term assets [Member] |  |  |
Inventory [Line Items] |  |  |
Total | $ 692 | $ 606 |

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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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