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Earnings Per Share - Additional Information (Detail) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 16, 2019 | Jun. 17, 2018 | Jun. 16, 2019 | Jun. 17, 2018
Stock Option [Member] |  |  |  |
Earnings Per Share [Line Items] |  |  |  |
Anti-dilutive Securities Excluded from Computation of Earnings Per Share | 71,180 | 68,760 | 71,180 | 90,670
Restricted Performance Shares [Member] |  |  |  |
Earnings Per Share [Line Items] |  |  |  |
Securities excluded from computation of earnings per share, amount unvested | 93,412 | 116,624 | 93,412 | 116,624

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- Definition Earnings per share [Line Items] + References No definition available. + Details
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- Definition Restricted stock units that are not included in the computation of diluted EPS for the current period, but which may, upon vesting, have a dilutive effect in future periods. + References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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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