Note 1 - General (Detail) - Business Acquisitions - Contributions to Revenues and Profits Since Acquisitions (Fyfe Asia [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Fyfe Asia [Member]
Revenues	$ 230,593
Net income(1)	$ 6,724	[1]

[1] Includes pro-forma adjustments for purchase price depreciation and amortization as if those intangibles were recorded as of January 1, of the year preceding the respective acquisition date.