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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
	Feb. 28, 2015	Mar. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Available revolving credit facility			$ 528,290	$ 535,711
Cash payment for settlement of interest rate derivative	$ 830
Loss on debt extinguishment			521
Senior Subordinated Notes Due 2019 Notes [Member]
Debt Instrument [Line Items]
Maturity date	Feb. 15, 2019
Debt instrument stated percentage	7.75%
Issued discount	$ 476
Senior Secured Revolving Credit Facility Due 2016 [Member]
Debt Instrument [Line Items]
Maturity date	Mar. 18, 2016
Abl Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility			150,422
Available revolving credit facility			$ 58,759
Write off Deferred Financing Costs [Member]
Debt Instrument [Line Items]
Loss on debt extinguishment		$ 521
Subsequent Issuance of Senior Subordinated Notes [Member] | Senior Subordinated Notes Due 2019 Notes [Member]
Debt Instrument [Line Items]
Issuance of senior subordinated notes, face amount	$ 60,000
Original Issuance of Senior Subordinated Notes [Member] | Senior Subordinated Notes Due 2019 Notes [Member]
Debt Instrument [Line Items]
Issuance of senior subordinated notes, face amount	$ 325,000
Senior Secured Revolving Credit Facility Due 2020 [Member] | Abl Facility [Member]
Debt Instrument [Line Items]
Maturity date			Feb. 26, 2020
Revolving credit facility			$ 190,000
Additional increase in credit facility			$ 100,000
Line of credit facility interest rate description			LIBOR plus between 1.75% and 2.50%
Debt instrument stated percentage			2.25%
Maturity date description			The ABL Facility matures on February 26, 2020. If we fail to refinance the 2019 Notes on or before November 16, 2018, the maturity date for the ABL Facility shall be November 16, 2018.
Senior Secured Revolving Credit Facility Due 2020 [Member] | Abl Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument stated percentage			1.75%
Senior Secured Revolving Credit Facility Due 2020 [Member] | Abl Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument stated percentage			2.50%
Senior Secured Asset Based Revolving Credit Facility, Due 2020 [Member]
Debt Instrument [Line Items]
Maturity date			Feb. 27, 2020
Debt instrument stated percentage			2.25%
Available revolving credit facility			$ 64,700
Outstanding irrevocable letters of credit totaling			$ 26,963

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Face (par) amount of debt instrument at time of issuance.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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