Note 4 - Goodwill and Intangible Assets (Detail) (USD $)	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011	Dec. 31, 2011
Goodwill, Acquired During Period			$ 22,500,000	[1]		$ 63,700,000	[2]
Amortization of Intangible Assets	3,000,000	1,200,000	5,700,000		2,400,000
Fyfe LA [Member] | Patents [Member]
Finite-lived Intangible Assets Acquired			3,900,000
Finite-Lived Intangible Asset, Useful Life			20 years
Fyfe LA [Member] | Customer Relationships [Member]
Finite-lived Intangible Assets Acquired			13,400,000
Finite-Lived Intangible Asset, Useful Life			15 years
Fyfe LA [Member]
Goodwill, Acquired During Period			2,500,000
Goodwill, Purchase Accounting Adjustments	763,000		800,000
Fyfe Asia [Member]
Goodwill, Acquired During Period			19,300,000
Hockway [Member]
Goodwill, Acquired During Period						2,000,000
Goodwill, Purchase Accounting Adjustments			(1,500,000)
Fyfe NA [Member]
Goodwill, Acquired During Period						43,200,000
Goodwill, Purchase Accounting Adjustments			(200,000)
CRTS [Member]
Goodwill, Acquired During Period						18,500,000
Goodwill, Purchase Accounting Adjustments	$ 1,586,000		$ 1,600,000
Patents [Member]
Finite-Lived Intangible Asset, Useful Life			18 years
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life			15 years

[1] During the first six months of 2012, the Company recorded goodwill of $2.5 million and $19.3 million related to the acquisition of Fyfe LA and Fyfe Asia, respectively. Additionally, the Company recorded decreases of $1.5 million and $0.2 million in goodwill related to the 2011 acquisitions of Hockway and Fyfe NA, respectively, and increases of $1.6 and $0.8 million in goodwill related to the CRTS and Fyfe LA acquisitions, respectively.

[2] During the year ended December 31, 2011, the Company recorded goodwill of $18.5 million related to the acquisition of CRTS, $2.0 million related to the acquisition of Hockway and $43.2 million related to the acquisition of Fyfe NA as discussed in Note 1 of this report.