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Note 2 - Property, Plant, Equipment and Water Programs (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Depreciation	$ 64,000	$ 93,000

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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