Note 11 - Property and Equipment, Net (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Depreciation	$ 248,000	$ 355,000
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Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset		0
Impaired Assets to be Disposed of by Method Other than Sale, Amount of Impairment Loss		$ 172,000