Note 10 - Intangible Assets, Net - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Finite-lived intangible assets, Impairment	$ 7,605	$ 7,618
Finite-lived intangible assets	14,141	14,165
Finite-lived intangible assets, Accumulated amortization	(6,500)	(6,502)
Finite-lived intangible assets, Impairment	(7,605)	(7,618)
Intangible assets, net	36	45
Customer Relationships [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	1,938	1,941
Finite-lived intangible assets, Accumulated amortization	(1,938)	(1,941)
Finite-lived intangible assets, Impairment
Intangible assets, net
Noncompete Agreements [Member]
Finite-lived intangible assets, Impairment	487	488
Finite-lived intangible assets	1,066	1,068
Finite-lived intangible assets, Accumulated amortization	(579)	(580)
Finite-lived intangible assets, Impairment	(487)	(488)
Intangible assets, net
Software Technologies [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	298	299
Finite-lived intangible assets, Accumulated amortization	(298)	(299)
Finite-lived intangible assets, Impairment
Intangible assets, net
Cloud-Computing Based Software Platforms [Member]
Finite-lived intangible assets, Impairment	414	415
Finite-lived intangible assets	1,350	1,353
Finite-lived intangible assets, Accumulated amortization	(903)	(896)
Finite-lived intangible assets, Impairment	(414)	(415)
Intangible assets, net	33	42
Intelligent Marketing Data Service Platform [Member]
Finite-lived intangible assets, Impairment	2,794	2,799
Finite-lived intangible assets	4,697	4,705
Finite-lived intangible assets, Accumulated amortization	(1,903)	(1,906)
Finite-lived intangible assets, Impairment	(2,794)	(2,799)
Intangible assets, net
Internet Safety, Information Exchange Security and Data Encryption Software [Member]
Finite-lived intangible assets, Impairment	1,466	1,468
Finite-lived intangible assets	1,891	1,894
Finite-lived intangible assets, Accumulated amortization	(425)	(426)
Finite-lived intangible assets, Impairment	(1,466)	(1,468)
Intangible assets, net
Computer Software, Cloud Video Management System [Member]
Finite-lived intangible assets, Impairment	1,039	1,040
Finite-lived intangible assets	1,382	1,383
Finite-lived intangible assets, Accumulated amortization	(343)	(343)
Finite-lived intangible assets, Impairment	(1,039)	(1,040)
Intangible assets, net
Other Computer Software [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	114	114
Finite-lived intangible assets, Accumulated amortization	(111)	(111)
Finite-lived intangible assets, Impairment
Intangible assets, net	3	3
Domain Name [Member]
Domain name	1,405	1,408
Finite-lived intangible assets, Impairment	(1,405)	(1,408)
Finite-lived intangible assets, Impairment	$ 1,405	$ 1,408