Note 1 - General (Detail) - Business Acquisitions - Consideration Summary (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2012 CRTS [Member]	Jun. 30, 2011 CRTS [Member]	Mar. 31, 2012 Hockway [Member]	Aug. 31, 2011 Hockway [Member]		Aug. 31, 2011 Fyfe NA [Member]		Mar. 31, 2012 Fyfe LA [Member]	Jan. 04, 2012 Fyfe LA [Member]
Cash	$ 149,019		$ 24,000		$ 3,552	[1]	$ 118,118	[2]		$ 3,349	[3]
Estimated fair value of earnout payments and final payments owed to shareholders	17,034	14,800	14,760	1,500	1,454				800	820
Total consideration recorded	$ 166,053		$ 38,760		$ 5,006		$ 118,118			$ 4,169

[1] Includes the cash purchase price at closing of $4.6 million plus a final working capital adjustment of $1.0 million, which was returned to the Company in the first quarter of 2012.

[2] Includes the cash purchase price at closing of $115.8 million plus a preliminary 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.

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