Cash, Cash Equivalents, and Investments - Gross Unrealized Losses and Fair Values for Available-for-Sale Investments (Detail)
$ in Thousands |
Apr. 01, 2018
USD ($)
|
| 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
|