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Share-Based Compensation (Tables) | 3 Months Ended
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Mar. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of stock option activity | The following table summarizes the Company’s stock option activity during the three months ended March 30, 2019:
| Number of Stock Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value (in thousands)(1)
Outstanding at December 31, 2018 | 5,120,293 |  |  | $ | 3.13 |  |  | 7.3 |  | $ | 81,371 |
Granted | — |  |  | $ | — |  |  | — |  | $ | — |
Exercised | (169,583 | ) |  | $ | 2.16 |  |  | — |  | $ | 2,859 |
Cancelled/Forfeited | (50,382 | ) |  | $ | 4.34 |  |  | — |  | $ | — |
Outstanding at March 30, 2019 | 4,900,328 |  |  | $ | 3.15 |  |  | 7.0 |  | $ | 80,076 |
Vested and exercisable at March 30, 2019 | 2,981,633 |  |  | $ | 1.11 |  |  | 5.9 |  | $ | 54,793 |
Vested and expected to vest at March 30, 2019 | 3,967,483 |  |  | $ | 2.16 |  |  | 5.9 |  | $ | 68,759 |
__________ (1) Aggregate intrinsic value is calculated as the difference between the value of common stock on the transaction date and the exercise price multiplied by the number of shares issuable under the stock option.
Schedule of restricted stock activity | The following table summarizes the Company’s restricted stock activity during the three months ended March 30, 2019:
| Number of Shares of Restricted Stock |  | Weighted Average Remaining Contractual Life (Years) |  | Weighted Average Grant Date Fair Value Per Share
Outstanding at December 31, 2018 | 100,127 |  |  | 1.6 |  | $ | 17.03 |
Granted | — |  |  | — |  | $ | — |
Vested/Released | (12,946 | ) |  | — |  | $ | — |
Cancelled/Forfeited | — |  |  | — |  | $ | — |
Outstanding at March 30, 2019 | 87,181 |  |  | 1.4 |  | $ | 17.03 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock 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 (c) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding and exercisable options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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