Note 1 - Description of Business (Detail) - Business Acquisitions - Consideration Summary (USD $)	Dec. 31, 2012	Apr. 30, 2012 Purchase Price Adjusted for Acquisition Related Costs [Member] Fyfe Asia [Member]		Dec. 31, 2012 CRTS [Member]	Jun. 30, 2011 CRTS [Member]	Aug. 31, 2011 Hockway [Member]		Aug. 31, 2011 Fyfe NA [Member]		Dec. 31, 2012 Fyfe LA [Member]	Jan. 31, 2012 Fyfe LA [Member]		Apr. 30, 2012 Fyfe Asia [Member]
Cash	$ 189,163,000	$ 40,144,000	[1]		$ 24,000,000	$ 3,552,000	[2]	$ 118,118,000	[3]		$ 3,349,000	[4]	$ 40,700,000
Estimated fair value of earnout payments and final payments owed to shareholders	17,034,000		[1]	6,000,000	14,760,000	1,454,000	[2]		[3]	300,000	820,000	[4]
Total consideration recorded	$ 206,197,000	$ 40,144,000	[1]		$ 38,760,000	$ 5,006,000	[2]	$ 118,118,000	[3]		$ 4,169,000	[4]	$ 40,144,000

[1] Includes the cash purchase price at closing of $40.7 million plus a final working capital adjustment of $0.6 million, which was returned to the Company during the fourth quarter of 2012.

[2] Includes the cash purchase price at closing of $4.6 million plus a final working capital adjustment of $1.0 million, which was paid by the former Hockway shareholders to the Company in the first quarter of 2012.

[3] Includes the cash purchase price at closing of $115.8 million plus a final working capital adjustment to the sellers of $2.3 million, of which $1.8 million was paid in 2011 and $0.5 million was paid in 2012.

[4] Includes the cash purchase price at closing of $2.3 million and an additional $1.1 million payment to the sellers during the first quarter of 2012 based on a preliminary working capital adjustment.