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Long-term Debt - Additional Information (Detail) - USD ($) |  | 6 Months Ended |
--- | --- | --- | ---
Apr. 13, 2017 | Jun. 30, 2017 | Dec. 31, 2016
Debt Instrument [Line Items] |  |  |
Percentage of closing fee | 1.25% |  |
Assets relating to master loan agreements, Gross |  | $ 64,400,000 | $ 64,200,000
Capital leased assets, net book value |  | $ 14,800,000 | 16,400,000
Master Loan Agreements [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Payment Period, typical |  | 60 months |
Assets relating to master loan agreements, Gross |  | $ 59,600,000 | 48,700,000
Capital leased assets, net book value |  | 43,400,000 | $ 38,000,000
Term Loan Agreement [Member] | Eurodollar [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 3.00% |  |
Term Loan Agreement [Member] | Base Rate [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 2.00% |  |
Term Loan Agreement [Member] | Term Loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount | $ 300,000,000 |  |
Term loan facility maturity period | 7 years |  |
Quarterly principal payment of term loan |  | $ 800,000 |
Credit facility, amortization description |  | The Term Loan amortizes in quarterly principal payments of approximately $0.8 million starting on September 30, 2017, with any remaining unpaid balances due on April 15, 2024, which is the maturity date. Loans incurred under the ABL Revolver will have a final maturity of April 13, 2022. |
Percentage of mandatory pre-payments on debt issuance |  | 100.00% |
Percentage of mandatory pre-payments on sale or disposition of assets |  | 100.00% |
Percentage of mandatory pre-payments on excess cash flow |  | 50.00% |
Excess cash flow limit for mandatory pre-payments of debt |  | $ 5,000,000 |
Term Loan Agreement [Member] | Term Loan [Member] | Leverage Ratio Range One [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Percentage of mandatory pre-payments on excess cash flow |  | 25.00% |
Term Loan Agreement [Member] | Term Loan [Member] | Leverage Ratio Range Two [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Percentage of mandatory pre-payments on excess cash flow |  | 0.00% |
ABL Credit Agreement [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Fixed coverage ratio, covenants requirements | 1.00% |  |
ABL Credit Agreement [Member] | Eurodollar Rate Loan One [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 1.25% |  |
ABL Credit Agreement [Member] | Eurodollar Rate Loan Two [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 1.50% |  |
ABL Credit Agreement [Member] | Eurodollar Rate Loan Three [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 1.75% |  |
ABL Credit Agreement [Member] | Base Rate Loan One [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 0.25% |  |
ABL Credit Agreement [Member] | Base Rate Loan Two [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 0.50% |  |
ABL Credit Agreement [Member] | Base Rate Loan Three [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Margin interest rate percentage | 0.75% |  |
ABL Credit Agreement [Member] | Revolving Credit Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit maximum borrowing capacity |  | $ 100,000,000 |
Maturity date |  | Apr. 13, 2022 |
ABL Credit Agreement [Member] | Letter of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit maximum borrowing capacity |  | $ 50,000,000 |

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