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Cash, Cash Equivalents, and Investments - Gross Unrealized Losses and Fair Values for Available-for-Sale Investments (Detail) $ in Thousands | Apr. 01, 2018 USD ($)
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Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | $ 388,798
Unrealized losses, less than 12 months | (1,736)
Fair value, 12 months or greater | 77,550
Unrealized losses, 12 months or greater | (558)
Total fair value | 466,348
Total unrealized losses | (2,294)
Corporate bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 172,162
Unrealized losses, less than 12 months | (812)
Fair value, 12 months or greater | 23,693
Unrealized losses, 12 months or greater | (292)
Total fair value | 195,855
Total unrealized losses | (1,104)
Treasury bills |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 96,209
Unrealized losses, less than 12 months | (277)
Fair value, 12 months or greater | 42,487
Unrealized losses, 12 months or greater | (187)
Total fair value | 138,696
Total unrealized losses | (464)
Asset-backed securities |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 112,632
Unrealized losses, less than 12 months | (614)
Fair value, 12 months or greater | 2,640
Unrealized losses, 12 months or greater | (10)
Total fair value | 115,272
Total unrealized losses | (624)
Sovereign bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 3,599
Unrealized losses, less than 12 months | (9)
Fair value, 12 months or greater | 8,730
Unrealized losses, 12 months or greater | (69)
Total fair value | 12,329
Total unrealized losses | (78)
Municipal bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 4,196
Unrealized losses, less than 12 months | (24)
Fair value, 12 months or greater | 0
Unrealized losses, 12 months or greater | 0
Total fair value | 4,196
Total unrealized losses | (24)
Agency bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 0
Unrealized losses, less than 12 months | 0
Fair value, 12 months or greater | 0
Unrealized losses, 12 months or greater | 0
Total fair value | 0
Total unrealized losses | $ 0

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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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