Segment Information (Tables)

9 Months Ended

Sep. 30, 2015

Segment Information [Abstract]

Segment information

The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies. Intersegment sales and transfers are valued at prices comparable to those for unrelated parties.

Segment Information:

	Three Months Ended September 30, 2015
	Infrastructure Group			Aggregateand Mining Group			Energy Group			Corporate			Total
Net sales to external   customers	$	85,625		$	80,549		$	45,176		$	-		$	211,350
Intersegment sales		5,839			4,604			1,122			-			11,565
Gross profit		16,104			19,226			9,794			14			45,138
Gross profit percent		18.8	%		23.9	%		21.7	%		-			21.4	%
Segment profit (loss)	$	2,116		$	3,790		$	1,941		$	(6,853	)	$	994

	Nine Months Ended September 30, 2015
	Infrastructure Group			Aggregateand Mining Group			Energy Group			Corporate			Total
Net sales to external   customers	$	336,768		$	285,790		$	145,583		$	-		$	768,141
Intersegment sales		17,633			19,223			13,965			-			50,821
Gross profit		74,292			70,182			28,912			31			173,417
Gross profit percent		22.1	%		24.6	%		19.9	%		-			22.6	%
Segment profit (loss)	$	29,472		$	25,441		$	2,805		$	(29,154	)	$	28,564

	Three Months Ended September 30, 2014
	Infrastructure Group			Aggregateand Mining Group			Energy Group			Corporate			Total
Net sales to external   customers	$	78,698		$	88,177		$	53,282		$	-		$	220,157
Intersegment sales		8,685			5,948			4,819			-			19,452
Gross profit		11,367			21,604			10,277			13			43,261
Gross profit percent		14.4	%		24.5	%		19.3	%		-			19.7	%
Segment profit (loss)	$	520		$	6,806		$	2,789		$	(7,137	)	$	2,978

	Nine Months Ended September 30, 2014
	Infrastructure Group			Aggregateand Mining Group			Energy Group			Corporate			Total
Net sales to external   customers	$	296,074		$	287,976		$	152,036		$	-		$	736,086
Intersegment sales		20,619			23,043			12,273			-			55,935
Gross profit		59,135			70,722			32,309			30			162,196
Gross profit percent		20.0	%		24.6	%		21.3	%		-			22.0	%
Segment profit (loss)	$	21,124		$	27,065		$	7,659		$	(27,578	)	$	28,270

Schedule of segment profits to the Company's consolidated totals

A reconciliation of total segment profits to the Company’s consolidated totals is as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
Total segment profits	$	994		$	2,978		$	28,564		$	28,270
Recapture (elimination) of intersegment profit		964			(1,212	)		(32	)		(2,468	)
Net income		1,958			1,766			28,532			25,802
Net loss attributable to non-controlling   interest in subsidiaries		(334	)		(150	)		(669	)		(156	)
Net income attributable to controlling interest	$	2,292		$	1,916		$	29,201		$	25,958