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Summary of Company's Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands | 4 Months Ended
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Apr. 22, 2017 | Apr. 23, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Total stock-based compensation | $ 5,975 | $ 7,779
Performance Contingent Restricted Stock |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Total stock-based compensation | 5,367 | 7,116
Deferred and Restricted Stock |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Total stock-based compensation | $ 608 | 674
Stock Appreciation Rights |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Total stock-based compensation |  | $ (11)

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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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