Note 19 - Earnings Per Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Income attributable to Trio-Tech International common shareholders from continuing operations, net of tax	$ 227	$ 882
Income attributable to Trio-Tech International common shareholders from discontinued operations, net of tax	3	0
Net Income attributable to Trio-Tech International common shareholders	$ 230	$ 882
Weighted average number of common shares outstanding – basic (in shares)	4,096	4,077
Dilutive effect of stock options (in shares)	184	81
Number of shares used to compute earnings per share – diluted (in shares)	4,280	4,158
Basic earnings per share from continuing operations attributable to Trio-Tech International (in dollars per share)	$ 0.06	$ 0.22
Basic earnings per share from discontinued operations attributable to Trio-Tech International (in dollars per share)	0	0
Basic earnings per share from net income attributable to Trio-Tech International (in dollars per share)	0.06	0.22
Diluted earnings per share from continuing operations attributable to Trio-Tech International (in dollars per share)	0.05	0.21
Diluted earnings per share from discontinued operations attributable to Trio-Tech International (in dollars per share)	0	0
Diluted earnings per share from net income attributable to Trio-Tech International (in dollars per share)	$ 0.05	$ 0.21