EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Notes to Financial Statements
Income attributable to Trio-Tech International common shareholders from continuing operations, net of tax	$ 351	$ 155	$ 970	$ 607
Loss attributable to Trio-Tech International common shareholders from discontinued operations, net of tax	(1)	(5)	(7)	(8)
Net income attributable to Trio-Tech International common shareholders	$ 350	$ 150	$ 963	$ 599
Weighted average number of common shares outstanding - basic	3,523	3,563	3,523	3,563
Dilutive effect of stock options	116	13	54	12
Number of shares used to compute earnings per share - diluted	3,639	3,576	3,577	3,575
Basic earnings per share from continuing operations attributable to Trio-Tech International	$ .10	$ 0.04	$ 0.28	$ 0.17
Basic earnings per share from discontinued operations attributable to Trio-Tech International	0.00	0.00	0.00	0.00
Basic Earnings per Share from Net Income Attributable to Trio-Tech International	.10	0.04	0.28	0.17
Diluted earnings per share from continuing operations attributable to Trio-Tech International	.10	0.04	0.27	0.17
Diluted earnings per share from discontinued operations attributable to Trio-Tech International	0.00	0.00	0.00	0.00
Diluted Earnings per Share from Net Income Attributable to Trio-Tech International	$ .10	$ 0.04	$ 0.27	$ 0.17