Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017 USD ($) Facility State Segment	Mar. 31, 2016 USD ($)
Significant Accounting Policies [Line Items]
Number of states with aggregates business sales by destination | State	26
Number of reportable segments | Segment	3
Shares withheld for income tax obligations reclassified from operating activity to financing activity	$ 3,695,000	$ 580,000
ASU 2016-09
Significant Accounting Policies [Line Items]
Shares withheld for income tax obligations reclassified from operating activity to financing activity		26,000
Excess tax benefits from stock-based compensation recognized as operating activities	$ 2,270,000	1,278,000
ASU 2017-07 | Cost of Sales
Significant Accounting Policies [Line Items]
Reclassification of costs to nonoperating expense		616,000
ASU 2017-07 | Selling, General and Administrative Costs
Significant Accounting Policies [Line Items]
Reclassification of costs to nonoperating expense		1,512,000
ASU 2017-07 | Other Operating Income and Expenses
Significant Accounting Policies [Line Items]
Reclassification of costs to nonoperating expense		$ 126,000
Minimum
Significant Accounting Policies [Line Items]
Number of quarries distribution facilities and plants | Facility	270