Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Revenues	$ 15,453,000	$ 22,520,000	$ 24,020,000	$ 30,780,000
Cost of revenues	15,087,000	21,552,000	23,212,000	29,211,000
Gross profit	366,000	968,000	808,000	1,569,000
Operating expenses
Sales and marketing expenses	181,000	280,000	350,000	844,000
General and administrative expenses	1,248,000	1,478,000	2,058,000	2,842,000
Research and development expenses	159,000	240,000	360,000	458,000
Impairment on intangible assets		1,878,000		1,878,000
Impairment on goodwill		5,412,000		5,412,000
Total operating expenses	1,588,000	9,288,000	2,768,000	11,434,000
Loss from operations	(1,222,000)	(8,320,000)	(1,960,000)	(9,865,000)
Other income (expenses)
Impairment on long-term investments				(471,000)
Interest expense, net	(12,000)	(9,000)	(23,000)	(19,000)
Other expenses	(2,000)	(6,000)	(4,000)	(28,000)
Change in fair value of warrant liabilities	821,000	(526,000)	471,000	948,000
Total other income/(expenses)	807,000	(541,000)	444,000	430,000
Loss before income tax (expense)/benefit and noncontrolling interests	(415,000)	(8,861,000)	(1,516,000)	(9,435,000)
Income tax (expense)/benefit	33,000	(693,000)	(6,000)	(689,000)
Net loss	(382,000)	(9,554,000)	(1,522,000)	(10,124,000)
Net loss attributable to noncontrolling interests	3,000	50,000	5,000	55,000
Net loss attributable to ChinaNet Online Holdings, Inc.	(379,000)	(9,504,000)	(1,517,000)	(10,069,000)
Net (loss)/income	(382,000)	(9,554,000)	(1,522,000)	(10,124,000)
Foreign currency translation gain/(loss)	60,000	(280,000)	24,000	194,000
Comprehensive loss	(322,000)	(9,834,000)	(1,498,000)	(9,930,000)
Comprehensive loss attributable to noncontrolling interests	2,000	52,000	5,000	49,000
Comprehensive loss attributable to ChinaNet Online Holdings, Inc.	$ (320,000)	$ (9,782,000)	$ (1,493,000)	$ (9,881,000)
Loss per share
Basic and diluted (in dollars per share)	$ (0.02)	$ (0.60)	$ (0.09)	$ (0.64)
Weighted average number of common shares outstanding:
Basic and diluted (in shares)	16,412,543	15,866,305	16,411,548	15,676,249
Unrelated Parties [Member]
Revenues
Revenues	$ 15,352,000	$ 22,520,000	$ 23,912,000	$ 30,780,000
Related Parties [Member]
Revenues
Revenues	$ 101,000		$ 108,000