Note 10 - Intangible Assets, Net - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Finite-lived intangible assets, Impairment	$ 7,391	$ 7,618
Finite-lived intangible assets	13,745	14,165
Finite-lived intangible assets, Accumulated amortization	(6,323)	(6,502)
Finite-lived intangible assets, Impairment	(7,391)	(7,618)
Intangible assets, net	31	45
Customer Relationships [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	1,883	1,941
Finite-lived intangible assets, Accumulated amortization	(1,883)	(1,941)
Finite-lived intangible assets, Impairment
Intangible assets, net
Noncompete Agreements [Member]
Finite-lived intangible assets, Impairment	473	488
Finite-lived intangible assets	1,036	1,068
Finite-lived intangible assets, Accumulated amortization	(563)	(580)
Finite-lived intangible assets, Impairment	(473)	(488)
Intangible assets, net
Software Technologies [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	290	299
Finite-lived intangible assets, Accumulated amortization	(290)	(299)
Finite-lived intangible assets, Impairment
Intangible assets, net
Cloud-Computing Based Software Platforms [Member]
Finite-lived intangible assets, Impairment	402	415
Finite-lived intangible assets	1,312	1,353
Finite-lived intangible assets, Accumulated amortization	(882)	(896)
Finite-lived intangible assets, Impairment	(402)	(415)
Intangible assets, net	28	42
Intelligent Marketing Data Service Platform [Member]
Finite-lived intangible assets, Impairment	2,716	2,799
Finite-lived intangible assets	4,565	4,705
Finite-lived intangible assets, Accumulated amortization	(1,849)	(1,906)
Finite-lived intangible assets, Impairment	(2,716)	(2,799)
Intangible assets, net
Internet Safety, Information Exchange Security and Data Encryption Software [Member]
Finite-lived intangible assets, Impairment	1,424	1,468
Finite-lived intangible assets	1,838	1,894
Finite-lived intangible assets, Accumulated amortization	(414)	(426)
Finite-lived intangible assets, Impairment	(1,424)	(1,468)
Intangible assets, net
Computer Software, Cloud Video Management System [Member]
Finite-lived intangible assets, Impairment	1,010	1,040
Finite-lived intangible assets	1,343	1,383
Finite-lived intangible assets, Accumulated amortization	(333)	(343)
Finite-lived intangible assets, Impairment	(1,010)	(1,040)
Intangible assets, net
Other Computer Software [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	112	114
Finite-lived intangible assets, Accumulated amortization	(109)	(111)
Finite-lived intangible assets, Impairment
Intangible assets, net	3	3
Domain Name [Member]
Domain name	1,366	1,408
Finite-lived intangible assets, Impairment	(1,366)	(1,408)
Finite-lived intangible assets, Impairment	$ 1,366	$ 1,408