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Note 11 - Property and equipment, net (Detail) (USD $)	3 Months Ended		6 Months Ended
Note 11 - Property and equipment, net (Detail) (USD $)	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Depreciation	$ 147,000	$ 140,000	$ 295,000	$ 273,000

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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