Long-Term Debt and Short-Term Debt - Summary of Long-Term Debt and Short-Term Debt (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Aug. 29, 2014
Debt Instrument [Line Items]
LIBOR rate	0.00%
4.89% Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Borrowings	$ 40,000
Percentage of fixed interest rate bearing	4.89%
Annual principal payment of fixed rate notes	5,714
Debt maturity date	Apr. 26, 2014
4.64% Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Borrowings	20,000	20,000
Percentage of fixed interest rate bearing	4.64%
Annual principal payment of fixed rate notes	4,000
Debt maturity date	Dec. 20, 2018
Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings	350,000
LIBOR rate	0.2318%
Applicable margin added to the interest rate post amendment	5.00%
Interest bearing rate	1.00%
Libor Period	3 months
Debt maturity date	Aug. 29, 2021
Debt discount	5,250
ABL Revolver [Member]
Debt Instrument [Line Items]
Borrowings	100,000	100,000
LIBOR rate	0.1565%
Applicable margin	1.75%
Debt maturity date	Aug. 29, 2019
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Borrowings	$ 100,000
Line of credit LIBOR rate	0.1565%
Applicable margin	1.25%
Debt maturity date	Oct. 26, 2017