Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013 State Facility
Significant Accounting Policies [Line Items]
Number of quarries distribution facilities and plants					300
Number of states with aggregates business sales by destination					30
Other comprehensive loss before reclassifications for pension and postretirement benefit plans, tax	$ 276,000	$ 1,490,000	$ 280,000	$ 1,512,000
Aggregates Product Line | Sales
Significant Accounting Policies [Line Items]
Total net sales, percentage					69.00%
Vertically Integrated | Sales
Significant Accounting Policies [Line Items]
Total net sales, percentage					19.00%
Specialty Products | Sales
Significant Accounting Policies [Line Items]
Total net sales, percentage					12.00%