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Long-Term Debt - Additional Information (Detail) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 18, 2018 USD ($) Tranche | Dec. 29, 2018 USD ($) | Dec. 30, 2017 USD ($) | Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |
Unused portion of loan commitments rate |  | 0.25% |  |
Maintenance of excess borrowing base |  | 10.00% |  |
Current borrowing available under credit facility |  | $ 262,000,000 | $ 132,700,000 |
Weighted average interest rate of convertible senior notes |  | 4.08% |  |
Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Additional borrowings available under credit facility | $ 325,000,000 |  |  |
Number of tranches | Tranche | 3 |  |  |
Tranche A [Member] | Minimum [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
LIBOR plus interest rate |  | 1.25% |  |
Tranche A [Member] | Maximum [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
LIBOR plus interest rate |  | 1.50% |  |
Tranche A-1 [Member] | Minimum [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
LIBOR plus interest rate |  | 2.25% |  |
Tranche A-1 [Member] | Maximum [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
LIBOR plus interest rate |  | 2.50% |  |
Tranche A-2 [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
LIBOR plus interest rate |  | 5.25% |  |
Revolving credit agreement [Member] | Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes maturity date | Dec. 20, 2021 |  |  |
Revolving credit agreement [Member] | Credit Agreement [Member] | Extended Maturity [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes maturity date | Dec. 18, 2023 |  |  |
Revolving credit agreement [Member] | Tranche A [Member] | Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Available borrowings under credit facility | $ 975,000,000 |  |  | $ 900,000,000
Revolving credit agreement [Member] | Tranche A-1 [Member] | Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Available borrowings under credit facility |  |  |  | $ 40,000,000
Revolving credit agreement [Member] | Tranche A-1 [Member] | Credit Agreement [Member] | Minimum [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
LIBOR plus interest rate | 2.25% |  |  |
Revolving credit agreement [Member] | Tranche A-1 [Member] | Credit Agreement [Member] | Maximum [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
LIBOR plus interest rate | 2.50% |  |  |
Revolving credit agreement [Member] | Tranche A-2 [Member] | Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Available borrowings under credit facility | $ 60,000,000 |  |  |
Letter of credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Unused borrowing capacity |  | $ 11,700,000 | $ 9,200,000 |

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