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Stock-Based Compensation (Performance-Contingent Return on Invested Capital Shares) - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 29, 2018 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period | 1 year
Minimum |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Return on investment target over the two fiscal years immediately preceding the vesting date | 1.75%
Percentage of shares that can be earned | 0.00%
Maximum |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Return on investment target over the two fiscal years immediately preceding the vesting date | 4.75%
Percentage of shares that can be earned | 125.00%
Maximum | 2017 Award |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of shares that can be earned | 80.00%
Weighted Average Cost of Capital | Range One |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of payout, ROIC above WACC | 50.00%
Weighted Average Cost of Capital | Range Two |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of payout, ROIC above WACC | 100.00%
Weighted Average Cost of Capital | Range Three |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of payout, ROIC above WACC | 125.00%
Return On Invested Capital |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of payout | 0.00%
Return On Invested Capital | Range One |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of payout, ROIC above WACC | 1.75%
Return On Invested Capital | Range Two |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of payout, ROIC above WACC | 3.75%
Return On Invested Capital | Range Three |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percentage of payout, ROIC above WACC | 4.75%
Performance Contingent Return On Invested Capital Shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Unrecognized compensation cost related to nonvested restricted stock granted by the EPIP | $ | $ 0.5
Expected weighted-average period to recognize compensation cost (years) | 2 months 1 day
Shares granted | shares | 0
Performance Contingent Return On Invested Capital Shares | Performance contingent Awards 2012 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period | 18 months
Performance Contingent Return On Invested Capital Shares | Performance contingent Awards subsequent to 2012 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period | 2 years

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