Note 1 - Description of Business (Detail) - Business Acquisitions - Initial Purchase Price Allocation (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2012 CRTS [Member]	Dec. 31, 2011 CRTS [Member]	Jun. 30, 2011 CRTS [Member]	Dec. 31, 2012 Hockway [Member]	Dec. 31, 2011 Hockway [Member]	Aug. 31, 2011 Hockway [Member]		Dec. 31, 2012 Fyfe NA [Member]	Dec. 31, 2011 Fyfe NA [Member]	Aug. 31, 2011 Fyfe NA [Member]		Dec. 31, 2012 Fyfe LA [Member]	Jan. 31, 2012 Fyfe LA [Member]		Dec. 31, 2011 Fyfe LA [Member]	Dec. 31, 2012 Fyfe Asia [Member]	Apr. 30, 2012 Fyfe Asia [Member]	Dec. 31, 2011 Fyfe Asia [Member]
Cash				$ 361			$ 536				$ 1,096			$ 301				$ 1,303
Receivables and cost and estimated earnings in excess of billings				2,365			2,341				16,019			195				9,022
Inventories				21			623				5,977			514
Prepaid expenses and other current assets				175			228				792			75				1,262
Property, plant and equipment				5,350			324				1,064			90				938
Identified intangible assets				26,220			2,200				53,768			1,639				14,130
Accounts payable, accrued expenses and billings in excess of cost and estimated earnings				(2,830)			(1,767)				(3,642)			(789)				(3,903)
Deferred tax liabilities				(12,981)										(306)				(2,410)
Total identifiable net assets		18,681	19,883	18,681	4,485	4,551	4,485		75,074	69,704	75,074		1,719	1,719		2,453	20,342	20,342	21,369
Total consideration recorded	206,197			38,760			5,006	[1]			118,118	[2]		4,169	[3]			40,144
Less: total identifiable net assets		18,681	19,883	18,681	4,485	4,551	4,485		75,074	69,704	75,074		1,719	1,719		2,453	20,342	20,342	21,369
Goodwill at December 31, 2012		$ 20,079	$ 18,017	$ 20,079	$ 521	$ 1,524	$ 521		$ 43,044	$ 46,082	$ 43,044		$ 2,450	$ 2,450		$ 1,716	$ 19,802	$ 19,802	$ 19,348

[1] 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.

[2] 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.

[3] 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.