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Long-Term Debt - Additional Information (Detail) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2016 USD ($) Tier Tranche | Nov. 30, 2015 USD ($) | Dec. 31, 2016 USD ($) | Jan. 02, 2016 USD ($)
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 | $ 415,800,000 |  | $ 415,800,000 | $ 334,300,000
Weighted average interest rate of convertible senior notes | 3.70% |  | 3.70% |
Amended Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of tiers in pricing grid | Tier | 2 |  |  |
Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Advance rate on real estate | 75.00% |  |  |
Credit facility increase in term loan | $ 33,000,000 |  | $ 33,000,000 |
Available borrowings under credit facility | $ 1,000,000,000 |  | 1,000,000,000 |
Number of tranches | Tranche | 3 |  |  |
Additional borrowings available under credit facility | $ 400,000,000 |  | $ 400,000,000 |
Notes maturity date |  |  | Dec. 20, 2021 |
6.625% Senior Notes Due December 2016 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal amount of senior notes |  | $ 50,000,000 |  |
Senior notes, rate |  | 6.625% |  |
Redemption price (expressed as percentage of the principal amount) |  | 101.65625% |  |
Expected redemption premium and write-off unamortized issuance costs |  | $ 1,200,000 |  |
Tranche A [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Secured revolving credit facility | 325,000 |  | $ 325,000 |
Tranche A-1 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Secured revolving credit facility | 34,127 |  | 34,127 |
Tranche A-2 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Secured revolving credit facility | 26,954 |  | 26,954 |
Revolving credit agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Secured revolving credit facility | 386,100,000 |  | 386,100,000 | 429,800,000
Revolving credit agreement [Member] | Tranche A [Member] | Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Available borrowings under credit facility | 900,000,000 |  | 900,000,000 |
Revolving credit agreement [Member] | Tranche A-1 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Available borrowings under credit facility | 40,000,000 |  | 40,000,000 |
Revolving credit agreement [Member] | Tranche A-2 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Secured revolving credit facility | 60,000,000 |  | 60,000,000 |
Letter of credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Unused borrowing capacity | $ 9,600,000 |  | $ 9,600,000 | $ 11,100,000

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