Note 4 - Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Goodwill [Table Text Block]

	2012		2011
Energy and Mining	$	78.1	$	77.4
North American Water and Wastewater		101.9		101.8
European Water and Wastewater		22.3		21.8
Asia-Pacific Water and Wastewater		5.8		5.7
Commercial and Structural		65.6		43.2
Total goodwill	$	273.7	$	249.9

Reconciliation of Goodwill [Table Text Block]

	E&M		NAR		Europe		Asia		C&S		Total
Beginning balance at January 1, 2012	$	77.4	$	101.8	$	21.8	$	5.7	$	43.2	$	249.9
Additions to goodwill through acquisitions(1)		0.1		–		–		–		22.0		22.1
Foreign currency translation		0.6		0.1		0.5		0.1		0.4		1.7
Goodwill at end of period(2)	$	78.1	$	101.9	$	22.3	$	5.8	$	65.6	$	273.7

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

	As of December 31, 2012(1)									As of December 31, 2011(2)
	Weighted Average Useful Lives (Years)		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
License agreements		7.3	$	3,925	$	(2,821	)	$	1,104	$	3,922	$	(2,654	)	$	1,268
Backlog		—		5,196		(5,196	)		—		5,191		(4,245	)		946
Leases		13.7		2,067		(331	)		1,736		2,067		(183	)		1,884
Trademarks		17.2		21,810		(3,417	)		18,393		21,716		(2,187	)		19,529
Non-competes		—		740		(740	)		—		740		(729	)		11
Customer relationships		14.7		126,301		(19,684	)		106,617		111,723		(12,638	)		99,085
Patents and acquired technology		18.1		55,672		(21,244	)		34,428		53,906		(19,608	)		34,298
			$	215,711	$	(53,433	)	$	162,278	$	199,265	$	(42,244	)	$	157,021

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Year	Amount
2013	$	10,696
2014		10,696
2015		10,696
2016		10,677
2017		10,656