Business Segments (Tables)

9 Months Ended

Sep. 30, 2019

Segment Reporting [Abstract]

Financial Data for Continuing Operation for Company's Reportable Business Segments

The following table displays selected financial data for the Company’s reportable business segments. The Bluegrass Materials Company (Bluegrass) operations, acquired in April 2018, are located in the Mid-America Group and Southeast Group. Total revenues, as presented on the consolidated statements of earnings and comprehensive earnings, exclude intersegment revenues which represent sales from one segment to another segment, which are eliminated.

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
	(Dollars in Thousands)
Total revenues:
Mid-America Group	$	448,758		$	377,005		$	1,112,897		$	906,377
Southeast Group		134,138			125,547			390,399			318,749
West Group		772,473			643,565			1,920,182			1,783,174
Total Building Materials Business		1,355,369			1,146,117			3,423,478			3,008,300
Magnesia Specialties		64,877			73,523			215,190			215,747
Total	$	1,420,246		$	1,219,640		$	3,638,668		$	3,224,047
Products and services revenues:
Mid-America Group	$	411,045		$	348,429		$	1,024,069		$	841,897
Southeast Group		129,619			121,661			376,967			308,306
West Group		723,162			603,763			1,797,677			1,672,707
Total Building Materials Business		1,263,826			1,073,853			3,198,713			2,822,910
Magnesia Specialties		59,334			68,365			198,886			201,390
Total	$	1,323,160		$	1,142,218		$	3,397,599		$	3,024,300
Earnings (Loss) from operations:
Mid-America Group	$	159,711		$	120,344		$	332,344		$	235,221
Southeast Group		31,463			26,372			85,285			60,464
West Group		156,382			92,090			286,540			249,885
Total Building Materials Business		347,556			238,806			704,169			545,570
Magnesia Specialties		20,097			23,301			67,959			65,867
Corporate		(22,390	)		(21,445	)		(71,763	)		(67,741	)
Total	$	345,263		$	240,662		$	700,365		$	543,696

	September 30, 2019		December 31, 2018
Assets employed:	(Dollars in Thousands)
Mid-America Group	$	2,904,439	$	2,788,454
Southeast Group		1,447,293		1,299,469
West Group		5,392,587		4,989,639
Total Building Materials Business		9,744,319		9,077,562
Magnesia Specialties		163,095		156,106
Corporate		316,071		317,751
Total	$	10,223,485	$	9,551,419