v3.10.0.1

Stockholders’ Equity - Share Based Compensation Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 28, 2018 | Mar. 31, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Dec. 30, 2017 | Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share price (usd per share) |  |  |  | $ 22.11 |  |  |
Time-Based Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units granted (shares) |  |  |  | 600,000 |  |  |
Performance-Based Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units granted (shares) | 300,000 | 300,000 |  |  |  |  |
Award vesting period |  |  |  | 2 years |  | 3 years | 4 years
Market-Based Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units granted (shares) | 500,000 | 500,000 |  |  |  |  |
Award vesting period |  |  | 5 years |  |  |  |
Weighted average share price targets period |  |  | 120 days |  |  |  |
Restricted stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units granted (shares) |  |  |  | 1,384,000 |  |  |
Weighted average grant date fair value (in dollars per share) |  |  |  | $ 14.88 |  | $ 10.58 |
Unrecognized compensation cost, period for recognition |  |  |  | 2 years 8 months 13 days |  |  |
Purchase price for vested RSUs (usd per share) |  |  |  | $ 0.001 |  |  |
Settled (RSUs) (usd per share) |  |  |  | $ 10.76 |  |  |
Unrecognized compensation cost |  |  |  | $ 22.2 |  |  |
Restricted Stock Units and Performance-Based Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Settled (RSUs) (usd per share) |  |  |  | $ 10.76 | $ 7.59 |  |
Total fair value of vested RSUs |  |  |  | $ 6.2 | $ 3.2 |  |
Intrinsic value of options exercised and RSUs vested |  |  |  | $ 19.3 | $ 10.4 |  |
Employee Stock Option |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Unrecognized compensation cost, period for recognition |  |  |  | 2 years 3 months 22 days |  |  |
Stock options granted (shares) |  |  |  | 108,000 | 1,000,000 |  |
Weighted average exercise price (usd per share) |  |  |  | $ 17.44 | $ 12.82 |  |
The aggregate fair value of the options vested |  |  |  | $ 1.9 | $ 1.7 |  |
Unrecognized compensation cost |  |  |  | $ 5.2 |  |  |
Total shares of common stock reserved for future issuance |  |  |  | 13,633,000 |  |  |
2014 Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Total shares of common stock reserved for future issuance |  |  |  | 2,576,000 |  |  |
Maximum | Market-Based Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Weighted average grant date fair value (in dollars per share) |  |  |  | $ 16.34 |  |  |
Unrecognized compensation cost, period for recognition |  |  |  | 1 year 7 months 6 days |  |  |
Minimum | Market-Based Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Weighted average grant date fair value (in dollars per share) |  |  |  | $ 13.99 |  |  |
Unrecognized compensation cost, period for recognition |  |  |  | 10 months 17 days |  |  |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -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 The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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