Note 12 - Intangible Assets, Net (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Weighted Average [Member]
Finite-Lived Intangible Asset, Useful Life			7 years 47 days
VIEs [Member
Intangible Assets, Net (Excluding Goodwill)	$ 1,640,000		$ 1,640,000
Finite-Lived Intangible Assets, Accumulated Amortization	970,000		970,000
Accumulated Impairment of Intangible Assets Finite Lived	670,000		670,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	946,000		946,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	946,000		946,000
Amortization of Intangible Assets	312,000	$ 357,000	623,000	$ 714,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	712,000		712,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	952,000		952,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	946,000		946,000
Intangible Assets, Net (Excluding Goodwill)	6,868,000		6,868,000		$ 5,638,000
Finite-Lived Intangible Assets, Accumulated Amortization	4,386,000		4,386,000		4,845,000
Accumulated Impairment of Intangible Assets Finite Lived	$ 1,962,000		$ 1,962,000		$ 2,683,000