Note 1 - General (Details) - Business Acquisitions - Contributions to Revenues and Profits Since Acquisitions (Fyfe Asia [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Fyfe Asia [Member]
Note 1 - General (Details) - Business Acquisitions - Contributions to Revenues and Profits Since Acquisitions [Line Items]
Revenues	$ 491,871
Net income(1)	$ 19,546	[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.