Note 9 - Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Quarters Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Revenues:
Energy and Mining	$	130,941		$	100,400		$	245,981		$	195,857
North American Water and Wastewater		79,492			89,544			153,829			171,404
European Water and Wastewater		17,519			23,609			33,595			44,370
Asia-Pacific Water and Wastewater		8,757			11,432			19,351			23,941
Commercial and Structural		20,822			—			35,369			—
Total revenues	$	257,531		$	224,985		$	488,125		$	435,572
Gross profit (loss):
Energy and Mining	$	33,177		$	24,822		$	60,078		$	47,914
North American Water and Wastewater		17,097			13,268			31,667			24,410
European Water and Wastewater		4,355			6,111			7,707			10,634
Asia-Pacific Water and Wastewater		(1,248	)		1,639			(995	)		4,056
Commercial and Structural		9,046			—			16,654			—
Total gross profit	$	62,427		$	45,840		$	115,111		$	87,014
Operating income (loss):
Energy and Mining	$	13,457		$	6,986		$	20,897		$	13,376
North American Water and Wastewater		5,883			(174	)		10,073			(1,850	)
European Water and Wastewater		704			1,721			418			2,323
Asia-Pacific Water and Wastewater		(2,974	)		(693	)		(4,766	)		(520	)
Commercial and Structural		1,293			—			2,640			—
Total operating income	$	18,363		$	7,840		$	29,262		$	13,329

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Quarters Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Revenues:
United States	$	175,537		$	136,819		$	319,861		$	250,501
Canada		39,369			35,484			83,758			80,465
Europe		21,001			27,847			40,943			52,195
Other foreign		21,624			24,835			43,563			52,411
Total revenues	$	257,531		$	224,985		$	488,125		$	435,572
Gross profit:
United States	$	47,042		$	25,202		$	83,009		$	44,034
Canada		9,344			9,396			20,643			21,205
Europe		5,332			7,201			9,775			12,629
Other foreign		709			4,041			1,684			9,146
Total gross profit	$	62,427		$	45,840		$	115,111		$	87,014
Operating income (loss):
United States	$	13,019		$	(1,521	)	$	18,660		$	(7,689	)
Canada		5,223			4,934			11,859			12,683
Europe		1,745			2,899			2,097			4,202
Other foreign		(1,624	)		1,528			(3,354	)		4,133
Total operating income	$	18,363		$	7,840		$	29,262		$	13,329