Note 4 - Goodwill and Acquired Intangible Assets (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Goodwill, Acquired During Period	$ 22,100,000	[1]
Amortization of Intangible Assets	10,700,000		7,100,000	6,400,000
CRTS [Member]
Goodwill, Acquired During Period	1,700,000
Goodwill, Purchase Accounting Adjustments	2,062,000		1,600,000
Hockway [Member]
Goodwill, Acquired During Period	19,300,000
Goodwill, Purchase Accounting Adjustments	(1,003,000)		1,500,000
Fyfe NA [Member]
Goodwill, Purchase Accounting Adjustments	(3,038,000)		200,000
Fyfe LA [Member]
Goodwill, Purchase Accounting Adjustments	734,000		700,000
Fyfe Asia [Member]
Goodwill, Purchase Accounting Adjustments	454,000		500,000
Contract Backlog [Member]
Finite-lived Intangible Assets Acquired	1,400,000		1,600,000
Finite-Lived Intangible Asset, Useful Life			1 year
Trademarks and Tradenames [Member]
Finite-lived Intangible Assets Acquired	14,400,000		6,400,000
Finite-Lived Intangible Asset, Useful Life			20 years
Lease Agreements [Member]
Finite-lived Intangible Assets Acquired			800,000
Finite-Lived Intangible Asset, Useful Life	13 years 255 days	[2]	10 years
Customer Relationships [Member]
Finite-lived Intangible Assets Acquired			49,700,000
Finite-Lived Intangible Asset, Useful Life	14 years 255 days	[2]	18 years
Patents and Acquired Technology [Member]
Finite-lived Intangible Assets Acquired			$ 23,700,000
Finite-Lived Intangible Asset, Useful Life	18 years 36 days	[2]	19 years

[1] During 2012, the Company initially recorded goodwill of $1.7 million and $19.3 million related to the acquisitions 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 million, $0.7 million and $0.5 million in goodwill related to the CRTS, Fyfe LA and Fyfe Asia acquisitions, respectively.

[2] During 2012, the Company recorded $1.4 million in patents and acquired technology to be amortized over a weighted average life of twenty years and $14.4 million in customer relationships to be amortized over a weighted average life of fifteen years related to the acquisitions discussed in Note 1 of this report.