Revenues and Gross Profit (Tables)

6 Months Ended

Jun. 30, 2018

Revenues And Gross Profit [Abstract]

Total Revenues and Gross Profit by Product Line

The following table, which is reconciled to consolidated amounts, provides total revenues and gross profit by product line.

	Three-Months Ended						Six-Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
	(Dollars in Thousands)
Total revenues:
Building Materials Business:
Products and services:
Aggregates	$	665,308		$	577,913		$	1,090,324		$	1,028,968
Cement		113,148			98,937			202,331			192,491
Ready mixed concrete		277,202			241,871			495,738			464,249
Asphalt and paving services		83,140			82,943			99,507			104,680
Less: interproduct revenues		(78,178	)		(70,549	)		(138,843	)		(131,258	)
Products and services		1,060,620			931,115			1,749,057			1,659,130
Freight		68,821			62,380			113,126			109,648
Total Building Materials Business		1,129,441			993,495			1,862,183			1,768,778
Magnesia Specialties:
Products and services		68,157			65,728			133,025			130,029
Freight		4,805			4,301			9,199			8,576
Total Magnesia Specialties		72,962			70,029			142,224			138,605
Total	$	1,202,403		$	1,063,524		$	2,004,407		$	1,907,383
Gross profit (loss):
Building Materials Business:
Products and services:
Aggregates	$	198,540		$	173,012		$	251,542		$	251,967
Cement		41,305			29,369			65,038			60,148
Ready mixed concrete		29,952			26,840			45,593			46,630
Asphalt and paving services		18,512			20,314			10,873			15,573
Products and services		288,309			249,535			373,046			374,318
Freight		598			621			480			1,028
Total Building Materials Business		288,907			250,156			373,526			375,346
Magnesia Specialties:
Products and services		24,870			24,798			49,933			48,153
Freight		(1,028	)		(1,174	)		(2,203	)		(2,214	)
Total Magnesia Specialties		23,842			23,624			47,730			45,939
Corporate		3,168			314			5,053			(125	)
Total	$	315,917		$	274,094		$	426,309		$	421,160