Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 Facility State Segment	Mar. 31, 2017 USD ($)
Significant Accounting Policies [Line Items]
Number of quarries and yards | Facility	282
Number of states with aggregates business sales by destination | State	30
Number of reportable segments | Segment	3
ASU 2016-15
Significant Accounting Policies [Line Items]
Settlement proceeds from and premiums paid for corporate-owned life insurance policies reclassified from operating activity to investing activity | $		$ 181,000