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FAIR VALUE MEASUREMENTS (Tables) | 12 Months Ended
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Dec. 28, 2016
Fair Value Disclosures [Abstract] |
Schedule of Cash and Cash Equivalents | The following tables summarize our cash, cash equivalents and marketable securities by significant investment categories as of December 28, 2016 and December 30, 2015:
|  | December 28, 2016 |
| Cost Basis |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Marketable Securities |
Cash | $ | 6,322 |  |  | $ | — |  |  | $ | — |  |  | $ | 6,322 |  |  | $ | 6,322 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |
| Money market funds | 5,285 |  |  | — |  |  | — |  |  | 5,285 |  |  | 5,285 |  |  | — |
| Mutual funds | 60,232 |  |  | — |  |  | — |  |  | 60,232 |  |  | — |  |  | 60,232 |
Level 2: |  |  |  |  |  |  |  |  |  |  |
| Corporate debt securities(1) | 2,473 |  |  | 3 |  |  | (30 | ) |  | 2,446 |  |  | — |  |  | 2,446 |
Total | $ | 74,312 |  |  | $ | 3 |  |  | $ | (30 | ) |  | $ | 74,285 |  |  | $ | 11,607 |  |  | $ | 62,678 |
|  | December 30, 2015 |
| Cost Basis |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Marketable Securities |
Cash | $ | 70,816 |  |  | $ | — |  |  | $ | — |  |  | $ | 70,816 |  |  | $ | 70,816 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |
| Money market funds | 33 |  |  | — |  |  | — |  |  | 33 |  |  | 33 |  |  | — |
Level 2: |  |  |  |  |  |  |  |  |  |  |
| Corporate debt securities(1) | 2,397 |  |  | 1 |  |  | (12 | ) |  | 2,386 |  |  | — |  |  | 2,386 |
Total | $ | 73,246 |  |  | $ | 1 |  |  | $ | (12 | ) |  | $ | 73,235 |  |  | $ | 70,849 |  |  | $ | 2,386 |
(1) | The fair value of marketable securities with contractual maturity dates within one year are included in marketable securities and those with contractual maturity dates greater than one year are included in other assets on the Consolidated Balance Sheets. Corporate debt securities were measured at fair value using a market approach utilizing observable prices for identical securities or securities with similar characteristics and inputs that are observable or can be corroborated by observable market data.
Schedule of Unrealized Loss on Investments | The following tables summarize the gross unrealized losses and fair values for those investments that were in an unrealized loss position as of December 28, 2016 and December 30, 2015, aggregated by investment category and the length of time that individual securities have been in a continuous loss position:
|  | December 28, 2016 |
|  | Less than 12 Months |  |  | 12 Months or Greater |  |  | Total |
| Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
| Money market funds | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
| Mutual funds | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
| Corporate debt securities | 1,244 |  |  | (10 | ) |  | 540 |  |  | (20 | ) |  | 1,784 |  |  | (30 | )
Total | $ | 1,244 |  |  | $ | (10 | ) |  | $ | 540 |  |  | $ | (20 | ) |  | $ | 1,784 |  |  | $ | (30 | )
|  | December 30, 2015 |
|  | Less than 12 Months |  |  | 12 Months or Greater |  |  | Total |
| Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
| Money market funds | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
| Corporate debt securities | 2,397 |  |  | (12 | ) |  | — |  |  | — |  |  | 2,397 |  |  | (12 | )
Total | $ | 2,397 |  |  | $ | (12 | ) |  | $ | — |  |  | $ | — |  |  | $ | 2,397 |  |  | $ | (12 | )
Schedule of Gain (Loss) on Investments | A summary of other income from available-for-sale securities recognized during fiscal 2016, 2015 and 2014 is as follows:
| 2016 |  |  | 2015 |  |  | 2014 |
Available-for-sale securities: |  |  |  |  |
| Dividend income | $ | 296 |  |  | $ | — |  |  | $ | — |
| Interest income | 88 |  |  | 7 |  |  | — |
| Loss on investments | (7 | ) |  | — |  |  | — |
Total other income, net | $ | 377 |  |  | $ | 7 |  |  | $ | — |
Schedule of Realized Gain (Loss) | A summary of available-for-sale securities sold and gross realized gains and losses recognized during fiscal 2016 is as follows:
| 2016 |
Available-for-sale securities: |
| Gross proceeds from sales and redemptions | $ | 938 |
| Cost basis of sales and redemptions | 956 |
| Gross realized gains included in net income | 2 |
| Gross realized losses included in net income | (20 | )
| Amounts reclassified out of accumulated other comprehensive loss | 19 |
Schedule of Investments Classified by Contractual maturity Dates | The following table summarizes the estimated fair value of our investments in marketable debt securities, accounted for as available-for-sale securities and classified by the contractual maturity date of the securities:
| December 28 2016 |
Due within one year | $ | 1,807 |
Due after one year through 5 years | 639 |
Due after 5 years through 10 years | — |
Due after 10 years | — |
Total | $ | 2,446 |

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- Definition Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27405-111563 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.M) -URI http://asc.fasb.org/extlink&oid=65877573&loc=d3e87990-122713 + Details
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