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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 30, 2020
Fair Value Disclosures [Abstract]  
Schedule of Cash and Cash Equivalents
The following tables summarize our Cash and cash equivalents and Marketable securities by significant investment categories as of December 30, 2020 and December 25, 2019:
December 30, 2020
Cost Basis Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash and Cash EquivalentsMarketable Securities
Cash$146,873 $— $— $146,873 $146,873 $— 
Level 1:
Money market funds— — — — — — 
Mutual funds36,874 13 — 36,887 — 36,887 
Total$183,747 $13 $— $183,760 $146,873 $36,887 
December 25, 2019
Cost Basis Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash and Cash EquivalentsMarketable Securities
Cash$32,094 $— $— $32,094 $32,094 $— 
Level 1:
Money market funds5,005 — — 5,005 5,005 — 
Mutual funds36,436 72 36,508 — 36,508 
Total$73,535 $72 $— $73,607 $37,099 $36,508 
Schedule of Gain (Loss) on Investments
A summary of other income from equity securities recognized during fiscal 2020, fiscal 2019 and fiscal 2018 is as follows:
202020192018
Equity securities:
Dividend income$359 $1,244 $1,392 
Interest income— — 9 
Realized gain (loss) on sale of investments79 22 (3)
Unrealized gain (loss) on equity securities(59)194 (61)
Total$379 $1,460 $1,337 
Schedule of Realized Gain (Loss)
A summary of equity securities sold and gross realized gains and losses recognized during fiscal 2020, fiscal 2019 and fiscal 2018 is as follows:
202020192018
Equity securities:
Gross proceeds from sales and redemptions$20,000 $27,000 $2,144 
Cost basis of sales and redemptions19,921 26,978 2,160 
Gross realized gains included in net income (loss)79 36 2 
Gross realized losses included in net income (loss)— (14)(18)
Amounts reclassified out of accumulated other comprehensive loss— — 16