Intangible Assets Deemed to Indefinite Life and Not Being Amortized (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	$ 52,957	$ 24,035
Aggregates Business
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	16,065	21,470
Specialty Products
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	2,565	2,565
Cement
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	34,327
Operating Permits
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	6,600	11,635
Operating Permits | Aggregates Business
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	6,600	11,635
Use Rights
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	29,412	9,835
Use Rights | Aggregates Business
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	9,385	9,835
Use Rights | Cement
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	20,027
Trade name
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	16,945	2,565
Trade name | Aggregates Business
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	80
Trade name | Specialty Products
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	2,565	2,565
Trade name | Cement
Schedule Of Other Intangible Assets [Line Items]
Indefinite life intangible assets	$ 14,300