Note 4 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

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

	As of March 31, 2013									As of December 31, 2012
	Weighted Average Useful Lives (Years)		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
License agreements		7.0	$	3,922	$	(2,861	)	$	1,061	$	3,925	$	(2,821	)	$	1,104
Backlog		—		5,191		(5,191	)		—		5,196		(5,196	)		—
Leases		13.5		2,070		(365	)		1,705		2,067		(331	)		1,736
Trademarks		16.9		21,836		(3,680	)		18,156		21,810		(3,417	)		18,393
Non-competes		—		740		(740	)		—		740		(740	)		—
Customer relationships		14.5		126,111		(21,426	)		104,685		126,301		(19,684	)		106,617
Patents and acquired technology		18.1		55,207		(21,025	)		34,182		55,672		(21,244	)		34,428
			$	215,077	$	(55,288	)	$	159,789	$	215,711	$	(53,433	)	$	162,278

Schedule of Expected Amortization Expense [Table Text Block]

2013	$	10,582
2014		10,686
2015		10,686
2016		10,667
2017		10,646

Reportable Segment [Member]

Schedule of Goodwill [Table Text Block]

	2013		2012
Energy and Mining	$	77.9	$	78.1
North American Water and Wastewater		101.8		101.9
International Water and Wastewater		27.3		28.1
Commercial and Structural		65.7		65.6
Total goodwill	$	272.7	$	273.7

Reconciliation [Member]

Schedule of Goodwill [Table Text Block]

	Energy  and Mining			North American Water and Wastewater			International Water and Wastewater			Commercial and Structural			Total
Beginning balance at January 1, 2013	$	78.1		$	101.9		$	28.1		$	65.6		$	273.7
Additions to goodwill through acquisitions (1)		–			–			–			0.2			0.2
Foreign currency translation		(0.2	)		(0.1	)		(0.8	)		(0.1	)		(1.2	)
Goodwill at end of period(2)	$	77.9		$	101.8		$	27.3		$	65.7		$	272.7