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Earnings Per Share - Additional Information (Detail) - $ / shares shares in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 28, 2020 | Sep. 30, 2019 | Sep. 28, 2020 | Sep. 30, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | $ 11.83 |  | $ 11.83 |
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit | $ 16.60 |  | $ 16.60 |
Stock Options | Exercise Prices Ranging from $11.83 to $16.60 Per Share |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Shares excluded from calculating diluted earnings per share | 80 |  | 80 |
Restricted Stock Units (RSUs) | Exercise Prices Ranging from $11.83 to $16.60 Per Share |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Shares excluded from calculating diluted earnings per share | 3,187 |  | 3,187 |
Performance-Based Restricted Stock Units (PRUs) | Exercise Prices Ranging from $11.83 to $16.60 Per Share |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Shares excluded from calculating diluted earnings per share | 216 |  | 216 |
PRUs, RSUs and Stock Options |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Shares excluded from calculating diluted earnings per share |  | 407 |  | 862

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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