Note 19 - Earnings Per Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Income attributable to Trio-Tech International common shareholders from continuing operations, net of tax		$ 511	$ 503	$ 271	$ 730
Income attributable to Trio-Tech International common shareholders from discontinued operations, net of tax		(4)	4	0	7
Net Income Attributable to Trio-Tech International Common Shareholders		$ 507	$ 507	$ 271	$ 737
Weighted average number of common shares outstanding - basic (in shares)		4,250	4,120	4,250	4,109
Dilutive effect of stock options (in shares)		153	139	119	161
Number of shares used to compute earnings per share - diluted (in shares)		4,403	4,259	4,369	4,270
Basic earnings per share from continuing operations attributable to Trio-Tech International (in dollars per share)		$ 0.12	$ 0.12	$ 0.06	$ 0.18
Basic earnings per share from discontinued operations attributable to Trio-Tech International (in dollars per share)		0	0	0	0
Basic Earnings per Share from Net Income (in dollars per share)		0.12	0.12	0.06	0.18
Diluted earnings per share from continuing operations attributable to Trio-Tech International (in dollars per share)		0.12	0.12	0.06	0.17
Diluted earnings per share from discontinued operations attributable to Trio-Tech International (in dollars per share)		0	0	0	0
Diluted Earnings per Share from Net Income (in dollars per share)	[1]	$ 0.12	$ 0.12	$ 0.06	$ 0.17

[1] For periods in which the Company has reported net loss, diluted net loss per share attributable to common stockholders is the same as basic net loss per share attributable to common stockholders, because dilutive common shares are not assumed to have been issued if their effect is anti-dilutive.