Note 1 - General (Details) - Business Acquisitions - Continued Purchase Price Allocation (USD $) In Thousands, unless otherwise specified			9 Months Ended
Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Fyfe Asia [Member]	Sep. 30, 2013 Payables [Member] Fyfe Asia [Member]
Identifiable Net Assets [Roll Forward]
Total identifiable net assets			$ 20,342
Change in goodwill related to acquisitions			206	206
Total identifiable net assets			20,136
FYFE Asia Adjustment - Goodwill
Goodwill	334,416	272,294	19,802
Change in goodwill related to acquisitions			206	206
Goodwill	$ 334,416	$ 272,294	$ 20,008

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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