Note 8 - Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

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

Financial information by segment was as follows (in thousands):

	Quarters Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Revenues:
Energy and Mining	$	168,708		$	137,386		$	385,991		$	377,610
North American Water and Wastewater	95,997			77,818			261,616			231,647
International Water and Wastewater	26,152			27,766			80,064			80,712
Commercial and Structural	16,808			19,897			48,070			55,267
Total revenues	$	307,665		$	262,867		$	775,741		$	745,236
Gross profit:
Energy and Mining	$	37,118		$	33,710		$	87,678		$	93,466
North American Water and Wastewater	21,357			17,183			55,786			48,850
International Water and Wastewater	5,116			2,890			15,424			9,603
Commercial and Structural	5,820			9,148			17,228			25,803
Total gross profit	$	69,411		$	62,931		$	176,116		$	177,722
Operating income (loss):
Energy and Mining	$	12,874		$	21,426		$	24,481		$	42,902
North American Water and Wastewater	10,328			6,289			23,010			16,361
International Water and Wastewater	(257		)	(3,195		)	(1,338		)	(7,542		)
Commercial and Structural	(913		)	2,345			(1,480		)	4,985
Total operating income	$	22,032		$	26,865		$	44,673		$	56,706

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

The following table summarizes revenues, gross profit and operating income (loss) by geographic region (in thousands):

	Quarters Ended September 30,					Nine Months Ended September 30,
	2013		2012			2013		2012
Revenues:
United States	$	202,353	$	162,427		$	496,544	$	472,059
Canada	56,026		47,141			131,172		130,900
Europe	20,605		21,455			65,592		62,398
Other foreign	28,681		31,844			82,433		79,879
Total revenues	$	307,665	$	262,867		$	775,741	$	745,236
Gross profit:
United States	$	43,838	$	40,375		$	111,006	$	121,487
Canada	14,351		13,352			31,753		33,995
Europe	4,769		5,332			15,453		15,107
Other foreign	6,453		3,872			17,904		7,133
Total gross profit	$	69,411	$	62,931		$	176,116	$	177,722
Operating income (loss):
United States	$	8,941	$	16,422		$	16,067	$	35,552
Canada	10,397		9,069			20,622		20,928
Europe	1,106		1,691			3,928		3,789
Other foreign	1,588		(317		)	4,056		(3,563		)
Total operating income	$	22,032	$	26,865		$	44,673	$	56,706