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FINANCIAL INSTRUMENTS - Schedule of Cash, Cash Equivalents, Investments and Restricted Cash and Investments Unrealized Loss Positions (Details) $ in Thousands | Mar. 25, 2018 USD ($)
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Fair Value |
Unrealized Losses Less than 12 Months | $ 268,046
Unrealized Losses 12 Months or Greater | 22,178
Total | 290,224
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (1,878)
Unrealized Losses 12 Months or Greater | (198)
Total | (2,076)
U.S. Treasury and agencies |
Fair Value |
Unrealized Losses Less than 12 Months | 19,026
Unrealized Losses 12 Months or Greater | 4,338
Total | 23,364
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (144)
Unrealized Losses 12 Months or Greater | (62)
Total | (206)
Municipal notes and bonds |
Fair Value |
Unrealized Losses Less than 12 Months | 149,564
Unrealized Losses 12 Months or Greater | 0
Total | 149,564
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (533)
Unrealized Losses 12 Months or Greater | 0
Total | (533)
Mutual funds |
Fair Value |
Unrealized Losses Less than 12 Months | 9,117
Unrealized Losses 12 Months or Greater | 0
Total | 9,117
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (67)
Unrealized Losses 12 Months or Greater | 0
Total | (67)
Government-sponsored enterprises |
Fair Value |
Unrealized Losses Less than 12 Months | 10,805
Unrealized Losses 12 Months or Greater | 0
Total | 10,805
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (180)
Unrealized Losses 12 Months or Greater | 0
Total | (180)
Corporate notes and bonds |
Fair Value |
Unrealized Losses Less than 12 Months | 79,534
Unrealized Losses 12 Months or Greater | 17,840
Total | 97,374
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (954)
Unrealized Losses 12 Months or Greater | (136)
Total | $ (1,090)

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