Note 18 - Earnings Per Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Income attributable to Trio-Tech International common shareholders from continuing operations, net of tax	$ 882	$ 914
Income attributable to Trio-Tech International common shareholders from discontinued operations, net of tax	0	3
Net Income attributable to Trio-Tech International common shareholders	$ 882	$ 917
Basic (in shares)	4,077	3,913
Dilutive effect of stock options (in shares)	81	94
Number of shares used to compute earnings per share diluted (in shares)	4,158	4,007
Basic earnings per share from continuing operations attributable to Trio-Tech International (in dollars per share)	$ 0.22	$ 0.23
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)	0.22	0.23
Diluted earnings per share from continuing operations attributable to Trio-Tech International (in dollars per share)	0.21	0.23
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)	$ 0.21	$ 0.23