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Note 11 - Property and equipment, net (Detail) (USD $)	3 Months Ended
Note 11 - Property and equipment, net (Detail) (USD $)	Mar. 31, 2013	Mar. 31, 2012
Depreciation	$ 155,000	$ 148,000

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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