Note 11 - Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2012

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

	2012			2011			2010
Revenues:
Energy and Mining	$	525,107		$	433,230		$	382,246
North American Water and Wastewater		317,338			357,507			413,828
European Water and Wastewater		72,534			87,017			74,260
Asia-Pacific Water and Wastewater		38,501			43,717			44,641
Commercial and Structural		74,483			17,114			—
Total revenues	$	1,027,963		$	938,585		$	914,975
Operating income (loss):
Energy and Mining	$	57,313		$	35,011		$	41,121
North American Water and Wastewater		22,057			6,749			40,831
European Water and Wastewater		2,117			6,000			5,013
Asia-Pacific Water and Wastewater		(11,501	)		(2,512	)		70
Commercial and Structural		9,136			(711	)		—
Total operating income:	$	79,122		$	44,537		$	87,035
Total assets:
Energy and Mining	$	584,919		$	479,194		$	390,592
North American Water and Wastewater		268,097			281,353			310,839
European Water and Wastewater		65,637			62,791			60,861
Asia-Pacific Water and Wastewater		54,829			76,932			63,100
Commercial and Structural		142,561			128,358			—
Corporate		101,851			96,336			104,118
Discontinued Operations		—			—			3,800
Total assets:	$	1,217,894		$	1,124,964		$	933,310
Capital expenditures:
Energy and Mining	$	35,952		$	11,375		$	14,603
North American Water and Wastewater		3,023			3,378			13,256
European Water and Wastewater		2,737			1,798			1,768
Asia-Pacific Water and Wastewater		1,645			1,908			5,094
Commercial and Structural		443			43			—
Corporate		2,094			3,052			2,137
Total capital expenditures	$	45,894		$	21,554		$	36,858
Depreciation and amortization:
Energy and Mining	$	18,634		$	16,613		$	14,504
North American Water and Wastewater		8,886			9,405			9,796
European Water and Wastewater		1,808			2,007			2,047
Asia-Pacific Water and Wastewater		2,597			2,728			2,060
Commercial and Structural		4,509			1,183			—
Corporate		1,683			4,103			2,325
Total depreciation and amortization	$	38,117		$	36,039		$	30,732

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

	2012		2011			2010
Revenues:
United States	$	600,159	$	552,197		$	604,372
Canada		180,283		178,739			139,632
Europe		86,883		102,471			87,616
Other foreign		160,638		105,178			83,355
Total revenues	$	1,027,963	$	938,585		$	914,975
Operating income (loss)
United States	$	37,995	$	(2,212	)	$	40,172
Canada		31,376		31,892			30,958
Europe		6,196		9,391			9,041
Other foreign		3,555		5,466			6,864
Total operating income	$	79,122	$	44,537		$	87,035
Long-lived assets: (1)
United States	$	154,145	$	146,487		$	147,572
Canada		28,724		22,998			20,564
Europe		16,396		12,474			13,596
Other foreign		14,040		12,693			—
Total long-lived assets	$	213,305	$	194,652		$	181,732