Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012 State
Significant Accounting Policies [Line Items]
Number of quarries distribution facilities and plants					303
Number of states with aggregates business sales by destination					33
Other comprehensive loss before reclassifications for pension and postretirement benefit plans, tax	$ 0	$ 77,000	$ 1,514,000	$ 225,000
Specialty Products | Sales
Significant Accounting Policies [Line Items]
Total net sales, Percentage					11.00%
Aggregates Product Line | Sales
Significant Accounting Policies [Line Items]
Total net sales, Percentage					71.00%
Vertically Integrated | Sales
Significant Accounting Policies [Line Items]
Total net sales, Percentage					18.00%