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Stockholders' Equity - Summary of Weighted Average Grant Date Fair Value of Options Granted and Total intrinsic Value of options Exercised (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
Stockholders Equity Note [Abstract] |  |  |
Weighted-average grant-date fair value | $ 11.95 | $ 5.42 | $ 3.77
Intrinsic value of options (in thousands) | $ 13,699 | $ 3,065 | $ 1,737

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- References No definition available. + Details
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