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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 28, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Based Compensation Expense | The following table summarizes expense associated with these plans (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 28, 2019 |  | September 29, 2018 |  | September 28, 2019 |  | September 29, 2018
Compensation cost | $ | 1,336 |  |  | $ | 1,307 |  |  | $ | 5,408 |  |  | $ | 6,215 |
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period | The options and units granted by the Corporation had fair values as follows (in thousands):
| Nine Months Ended
| September 28, 2019 |  | September 29, 2018
Stock options | $ | 6,211 |  |  | $ | 7,200 |
Restricted stock units | $ | 361 |  |  | $ | 76 |
Schedule of Unrecognized Compensation Cost, Nonvested Awards | The following table summarizes unrecognized compensation expense and the weighted-average remaining service period for non-vested stock options and restricted stock units as of September 28, 2019:
| Unrecognized Compensation Expense (in thousands) |  | Weighted-Average Remaining Service Period (years)
Non-vested stock options | $ | 4,237 |  |  | 1.1
Non-vested restricted stock units | $ | 516 |  |  | 1.1

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + 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 Reference 2: 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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