Note 12 - Intangible Assets, Net (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Weighted Average [Member]
Finite-Lived Intangible Asset, Useful Life			7 years 3 days
VIEs [Member]
Intangible Assets, Net (Excluding Goodwill)	$ 1,630,000		$ 1,630,000
Finite-Lived Intangible Assets, Accumulated Amortization	970,000		970,000
Accumulated Impairment of Intangible Assets Finite Lived	660,000		660,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	940,000		940,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	940,000		940,000
Amortization of Intangible Assets	354,000	$ 349,000	977,000	$ 1,063,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	353,000		353,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	945,000		945,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	940,000		940,000
Intangible Assets, Net (Excluding Goodwill)	6,467,000		6,467,000		$ 5,638,000
Finite-Lived Intangible Assets, Accumulated Amortization	4,709,000		4,709,000		4,845,000
Accumulated Impairment of Intangible Assets Finite Lived	$ 1,948,000		$ 1,948,000		$ 2,683,000