Note 4 - Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	As of September 30, 2012 (1)									As of December 31, 2011
	Weighted Average Useful Lives (Years)		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
License agreements		8	$	3,926	$	(2,781	)	$	1,145	$	3,922	$	(2,654	)	$	1,268
Backlog		0		4,657		(4,657	)		—		4,651		(3,705	)		946
Leases		14		2,067		(295	)		1,772		2,067		(183	)		1,884
Trademarks		18		21,477		(2,914	)		18,563		21,396		(2,141	)		19,255
Non-competes		0		740		(740	)		—		740		(729	)		11
Customer relationships		15		117,725		(15,910	)		101,815		102,963		(10,970	)		91,993
Patents and acquired technology		18		55,587		(20,803	)		34,784		53,906		(19,608	)		34,298
			$	206,179	$	(48,100	)	$	158,079	$	189,645	$	(39,990	)	$	149,655

Schedule of Expected Amortization Expense [Table Text Block]

2012	$	10,831
2013		10,130
2014		10,130
2015		10,128
2016		10,111

Reportable Segment [Member]

Schedule of Goodwill [Table Text Block]

	2012		2011
Energy and Mining	$	78.2	$	77.4
North American Water and Wastewater		101.9		101.8
European Water and Wastewater		21.8		21.8
Asia-Pacific Water and Wastewater		5.8		5.7
Commercial and Structural		66.8		43.2
Total goodwill	$	274.5	$	249.9

Reconciliation [Member]

Schedule of Goodwill [Table Text Block]

	2012
Beginning balance at January 1, 2012	$	249.9
Additions to goodwill through acquisitions(1)		23.4
Foreign currency translation		1.2
Goodwill at end of period(2)	$	274.5