Long-Term Debt - Additional information (Detail) - USD ($)		3 Months Ended		12 Months Ended
	Apr. 05, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2015
Debt Instrument [Line Items]
Maximum consolidated debt reduction for unrestricted cash and cash equivalents for debt covenant calculation		$ 200,000,000
Additional interest expense		332,000	$ 307,000
Minimum
Debt Instrument [Line Items]
Reduction of consolidated debt in the debt ratio calculation		$ 50,000,000
Including Acquisition Bridge Debt | Maximum
Debt Instrument [Line Items]
Debt covenant		3.50
Excluding Acquisition Bridge Debt | Maximum
Debt Instrument [Line Items]
Debt covenant		3.75
Revolving Facility
Debt Instrument [Line Items]
Credit facility commitment		$ 350,000,000
Senior unsecured revolving facility, maturity period		5 years
Outstanding letters of credit		$ 2,507,000	2,507,000		$ 2,507,000
Revolving Facility | Subsequent Event
Debt Instrument [Line Items]
Repayment of outstanding revolving facility	$ 30,000,000
Trade Receivable Facility
Debt Instrument [Line Items]
Credit facility commitment		$ 250,000,000
Debt instrument maturity period		Sep. 30, 2016
Credit facility borrowing base		$ 324,734,000	$ 280,101,000		$ 282,258,000
Trade Receivable Facility | London Interbank Offered Rate(LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate		0.70%
Term Loan Facility
Debt Instrument [Line Items]
Credit facility commitment		$ 250,000,000
Amended | Maximum | Texas Industries Inc.
Debt Instrument [Line Items]
Acquisition integration expenses				$ 70,000,000
6.6% Senior Notes, Due 2018
Debt Instrument [Line Items]
Interest rate on notes		6.60%
Maturity date		2018
Increase in annual interest expense due to ongoing amortization of the terminated value of the swap agreements		$ 1,400,000