Business Segment Information (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting Information [Line Items]

Schedule of Segment Reporting Information

Summarized segment information is as follows (in thousands):

	Three Months Ended September 30,
	Construction		Large Project Construction		Construction Materials			Total
2017
Total revenue from reportable segments	$	579,146	$	279,845	$	180,265		$	1,039,256
Elimination of intersegment revenue	—		—		(82,130		)	(82,130		)
Revenue from external customers	579,146		279,845		98,135			957,126
Gross profit	91,348		6,385		16,797			114,530
Depreciation, depletion and amortization	5,770		3,226		5,824			14,820
2016
Total revenue from reportable segments	$	464,624	$	249,345	$	162,835		$	876,804
Elimination of intersegment revenue	—		—		(72,899		)	(72,899		)
Revenue from external customers	464,624		249,345		89,936			803,905
Gross profit	71,530		23,519		12,625			107,674
Depreciation, depletion and amortization	6,162		1,821		6,168			14,151

	Nine Months Ended September 30,
	Construction		Large Project Construction		Construction Materials			Total
2017
Total revenue from reportable segments	$	1,235,264	$	741,341	$	352,129		$	2,328,734
Elimination of intersegment revenue	—		—		(140,295		)	(140,295		)
Revenue from external customers	1,235,264		741,341		211,834			2,188,439
Gross profit	181,801		9,435		22,990			214,226
Depreciation, depletion and amortization	16,205		8,193		16,439			40,837
Segment assets	141,210		326,314		287,821			755,345
2016
Total revenue from reportable segments	$	1,005,457	$	642,116	$	327,108		$	1,974,681
Elimination of intersegment revenue	—		—		(126,745		)	(126,745		)
Revenue from external customers	1,005,457		642,116		200,363			1,847,936
Gross profit	147,519		50,678		21,923			220,120
Depreciation, depletion and amortization	16,032		4,809		17,364			38,205
Segment assets	156,458		322,800		290,898			770,156

Reconciliation of Operating Profit (Loss) from Segments to Consolidated

A reconciliation of segment gross profit to consolidated income before provision for income taxes is as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2017			2016			2017			2016
Total gross profit from reportable segments	$	114,530		$	107,674		$	214,226		$	220,120
Selling, general and administrative expenses	49,501			54,194			162,726			159,032
Gain on sales of property and equipment	(1,753		)	(398		)	(2,830		)	(2,364		)
Total other income	(2,522		)	(912		)	(2,987		)	(3,024		)
Income before provision for income taxes	$	69,304		$	54,790		$	57,317		$	66,476