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Note 6 - Property, Plant and Equipment (Detail) (USD $)	9 Months Ended
Note 6 - Property, Plant and Equipment (Detail) (USD $)	Sep. 30, 2012	Sep. 30, 2011
Depreciation	$ 714,000	$ 948,000

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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