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Note 4 - Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Depreciation	$ 637	$ 589	$ 790
Asset Impairment Charges	$ 672		$ 156

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

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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