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Commitments and Contingencies - Additional Information (Detail) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 09, 2016 USD ($) | Nov. 08, 2016 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2016 USD ($) Lawsuits | Jan. 02, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |
Self-insurance reserves, current liabilities |  |  | $ 28,000 | $ 28,000 | $ 23,900
Alleged complaints | Lawsuits |  |  |  | 26 |
Settlement funds |  |  | $ 9,250 |  |
Class and / or Collective action treatment |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Alleged complaints | Lawsuits |  |  |  | 19 |
Individual claims and do not seek class or collective action treatment |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Alleged complaints | Lawsuits |  |  |  | 12 |
North Carolina Class Action |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Legal settlement | $ 9,000 |  |  |  |
Settlement funds | (5,200) |  |  |  |
Attorney's fee | $ 3,800 |  |  |  |
Connecticut Class Action |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Litigation settlement amount including attorney's fees |  | $ 1,250 |  |  |

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