Note 19 - Loss Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net loss	$ (108)	$ (1,905)	$ (1,167)	$ (1,082)	$ (1,275)	$ (2,987)
Net (income)/loss attributable to noncontrolling interests from continued operations	0	(9)			(1)	7
Net loss attributable to ZW Data Action Technologies Inc. (numerator for basic and diluted loss per share)	$ (108)	$ (1,914)			$ (1,276)	$ (2,980)
Basic and diluted (in shares)	2,659,629	1,805,289			2,449,564	1,802,582
Basic and diluted (in dollars per share)	$ (0.04)	$ (1.06)			$ (0.52)	$ (1.65)