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Stock-Based Compensation - RSAs and RSUs, PSUs and MSUs activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
RSAs and RSUs |  |  |
Number of equity awards |  |  |
Outstanding at the beginning the of year (in shares) | 1,523 |  |
Granted (in shares) | 522 |  |
Vested, earned or issued (in shares) | (730) |  |
Cancelled or forfeited (in shares) | (97) |  |
Outstanding at the end of the year (in shares) | 1,218 | 1,523 |
Outstanding at the end of the year and expected to vest (in shares) | 1,147 |  |
Weighted-Average Purchase Price |  |  |
Granted (in dollars per share) | $ 93.75 | $ 72.85 | $ 40.55
Weighted-Average Remaining Vesting Term |  |  |
Outstanding at the end of year | 10 months 10 days |  |
Outstanding at the end of year and expected to vest | 10 months 10 days |  |
Aggregate Intrinsic Value |  |  |
Outstanding at the end of the year (in dollars) | $ 95,620 |  |
Outstanding at the end of the year and expected to vest (in dollars) | $ 90,008 |  |
PSUs and MSUs |  |  |
Number of equity awards |  |  |
Outstanding at the beginning the of year (in shares) | 259 |  |
Granted (in shares) | 81 |  |
Vested, earned or issued (in shares) | (37) |  |
Cancelled or forfeited (in shares) | (21) |  |
Outstanding at the end of the year (in shares) | 282 | 259 |
Outstanding at the end of the year and expected to vest (in shares) | 249 |  |
Weighted-Average Purchase Price |  |  |
Granted (in dollars per share) | $ 97.53 | $ 78.40 | $ 32.23
Weighted-Average Remaining Vesting Term |  |  |
Outstanding at the end of year | 1 year 1 month 6 days |  |
Outstanding at the end of year and expected to vest | 1 year 1 month 6 days |  |
Aggregate Intrinsic Value |  |  |
Outstanding at the end of the year (in dollars) | $ 22,164 |  |
Outstanding at the end of the year and expected to vest (in dollars) | $ 19,615 |  |

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- Definition Represents the aggregate intrinsic value of equity-based payment instruments, excluding stock (or unit) options, outstanding and expected to vest as of the balance sheet date. + References No definition available. + Details
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- Definition Represents the number of equity-based payment instruments, excluding stock (or unit) options outstanding and expected to vest as of the balance sheet date. + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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