Note 22 - Earnings Per Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
(Loss) / Income attributable to Trio-Tech International common shareholders from continuing operations, net of tax	$ 2,396	$ (575)
Loss attributable to Trio-Tech International common shareholders from discontinued operations, net of tax	(1)	(16)
Net income / (loss) attributable to Trio-Tech International common shareholders	$ 2,395	$ (591)
Basic (in shares)	3,972	3,768
Dilutive effect of stock options (in shares)	202	117
Number of shares used to compute earnings per share diluted (in shares)	4,174	3,885
Basic earnings/(loss) per share from continuing operations attributable to Trio-Tech International (in dollars per share)	$ 0.61	$ (0.16)
Basic loss per share from discontinued operations attributable to Trio-Tech International (in dollars per share)	(0.01)	0
Basic Earnings / (Loss) per Share from net income attributable to Trio-Tech International (in dollars per share)	0.60	(0.16)
Diluted (loss) / earnings per share from continuing operations attributable to Trio-Tech International (in dollars per share)	0.57	(0.15)
Diluted loss per share from discontinued operations attributable to Trio-Tech International (in dollars per share)	0	0
Diluted Earnings / (Loss) per Share from net income attributable to Trio-Tech International (in dollars per share)	$ 0.57	$ (0.15)