Note 10 - Intangible Assets, Net - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite-lived intangible assets, Impairment	$ (7,765)	$ (7,618)
Finite-lived intangible assets	14,438	14,165
Finite-lived intangible assets, Accumulated amortization	(6,632)	(6,502)
Intangible assets, net	41	45
Customer Relationships [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	1,979	1,941
Finite-lived intangible assets, Accumulated amortization	(1,979)	(1,941)
Intangible assets, net
Noncompete Agreements [Member]
Finite-lived intangible assets, Impairment	(497)	(488)
Finite-lived intangible assets	1,089	1,068
Finite-lived intangible assets, Accumulated amortization	(592)	(580)
Intangible assets, net
Software Technologies [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	304	299
Finite-lived intangible assets, Accumulated amortization	(304)	(299)
Intangible assets, net
Cloud-Computing Based Software Platforms [Member]
Finite-lived intangible assets, Impairment	(423)	(415)
Finite-lived intangible assets	1,378	1,353
Finite-lived intangible assets, Accumulated amortization	(917)	(896)
Intangible assets, net	38	42
Intelligent Marketing Data Service Platform [Member]
Finite-lived intangible assets, Impairment	(2,853)	(2,799)
Finite-lived intangible assets	4,795	4,705
Finite-lived intangible assets, Accumulated amortization	(1,942)	(1,906)
Intangible assets, net
Internet Safety, Information Exchange Security and Data Encryption Software [Member]
Finite-lived intangible assets, Impairment	(1,496)	(1,468)
Finite-lived intangible assets	1,931	1,894
Finite-lived intangible assets, Accumulated amortization	(435)	(426)
Intangible assets, net
Computer Software, Cloud Video Management System [Member]
Finite-lived intangible assets, Impairment	(1,061)	(1,040)
Finite-lived intangible assets	1,411	1,383
Finite-lived intangible assets, Accumulated amortization	(350)	(343)
Intangible assets, net
Other Computer Software [Member]
Finite-lived intangible assets, Impairment
Finite-lived intangible assets	116	114
Finite-lived intangible assets, Accumulated amortization	(113)	(111)
Intangible assets, net	3	3
Domain Name [Member]
Domain name	1,435	1,408
Finite-lived intangible assets, Impairment	$ (1,435)	$ (1,408)