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Note 3 - Real Estate (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended		3 Months Ended		9 Months Ended
	Aug. 31, 2012 sqft	Jul. 31, 2012 sqft	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2012
Number of Vacant Properties Sold During Period		3		1	13
Area of Real Estate Property (in Square feet)	76,000	149,000
Proceeds from Divestiture of Businesses	$ 8,987	$ 18,500
Gain (Loss) on Disposition of Property	$ 1,387	$ 3,389
Percentage of Vacant R&D Property Sold	64.00%		36.00%

The gains (losses) included in results of operations resulting from the sale or disposal of property, plant and equipment, which do not qualify for treatment as discontinued operations. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.

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