Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) State	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Facility State Segment	Jun. 30, 2016 USD ($)
Significant Accounting Policies [Line Items]
Number of states with aggregates business sales by destination | State	26		26
Number of reportable segments | Segment			3
Shares withheld for income tax obligations reclassified from operating activity to financing activity			$ 8,938,000	$ 5,546,000
ASU 2016-09
Significant Accounting Policies [Line Items]
Shares withheld for income tax obligations reclassified from operating activity to financing activity				2,525,000
Excess tax benefits from stock-based compensation recognized as operating activities	$ 2,989,000		$ 5,259,000	3,948,000
ASU 2017-07 | Cost of Sales
Significant Accounting Policies [Line Items]
Reclassification of costs to nonoperating expense		$ 730,000		1,346,000
ASU 2017-07 | Selling, General and Administrative Expenses
Significant Accounting Policies [Line Items]
Reclassification of costs to nonoperating expense		1,728,000		3,240,000
ASU 2017-07 | Other Operating Income and Expenses
Significant Accounting Policies [Line Items]
Reclassification of costs to nonoperating expense		$ 648,000		$ 774,000
Minimum
Significant Accounting Policies [Line Items]
Number of quarries distribution facilities and plants | Facility			270