Consolidated Statements of Operations and Comprehensive Loss - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenues
Revenues	$ 57,146,000	$ 46,633,000
Cost of revenues	54,728,000	42,020,000
Gross profit	2,418,000	4,613,000
Operating expenses
Sales and marketing expenses	1,970,000	2,734,000
General and administrative expenses	5,486,000	7,464,000
Research and development expenses	933,000	1,261,000
Impairment on intangible assets	3,330,000	2,552,000
Impairment on goodwill	5,211,000	0
Total operating expenses	16,930,000	14,011,000
Loss from operations	(14,512,000)	(9,398,000)
Other income/(expenses)
Change in fair value of warrant liabilities	1,669,000
Impairment on long-term investments	(453,000)	(44,000)
Interest expense, net	(37,000)	(107,000)
Other expenses	(30,000)	(211,000)
Total other income/(expense)	1,149,000	(362,000)
Loss before income tax expense and noncontrolling interests	(13,363,000)	(9,760,000)
Income tax expense	(764,000)	(251,000)
Net loss	(14,127,000)	(10,011,000)
Net loss/(income) attributable to noncontrolling interests	102,000	(114,000)
Net loss attributable to ChinaNet Online Holdings, Inc.	(14,025,000)	(10,125,000)
Net loss	(14,127,000)	(10,011,000)
Foreign currency translation (loss)/gain	(135,000)	907,000
Comprehensive Loss	(14,262,000)	(9,104,000)
Comprehensive loss/(income) attributable to noncontrolling interests	96,000	(123,000)
Comprehensive loss attributable to ChinaNet Online Holdings, Inc.	$ (14,166,000)	$ (9,227,000)
Loss per share
Basic and diluted (in dollars per share)	$ (0.88)	$ (0.84)
Weighted average number of common shares outstanding:
Basic and diluted (in shares)	15,863,894	12,116,783
Unrelated Parties [Member]
Revenues
Revenues	$ 57,146,000	$ 46,598,000
Related Parties [Member]
Revenues
Revenues		$ 35,000