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Commitments and Contingencies - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Jan. 02, 2016 USD ($) Employees | Jan. 03, 2015 USD ($) | Dec. 28, 2013 USD ($)
Commitments And Contingencies [Line Items] |  |  |
Rent expense, net of sub-lease rental income | $ | $ 29.4 | $ 30.6 | $ 31.2
Collective bargaining agreements expiration | 5 years |  |
Workforce Subject to Collective Bargaining Arrangements [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 2,600 |  |
Percentage of employees covered under collective bargaining agreements | 23.00% |  |
Workforce Subject to Collective Bargaining Agreements Expiring in 2015 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 1,400 |  |
Collective bargaining agreements year of expiration | 2016 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2016 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 700 |  |
Collective bargaining agreements year of expiration | 2017 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2017 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 500 |  |
Collective bargaining agreements year of expiration | 2018 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2018 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 0 |  |
Collective bargaining agreements year of expiration | 2019 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2019 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 0 |  |
Collective bargaining agreements year of expiration | 2020 |  |

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