EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Notes to Financial Statements
Income / (loss) attributable to Trio-Tech International common shareholders from continuing operations, net of tax	$ 207	$ 138	$ 166	$ (204)
Income / (loss) attributable to Trio-Tech International common shareholders from discontinued operations, net of tax	(8)	19	3	(21)
Net income / (loss) attributable to Trio-Tech International common shareholders	$ 199us-gaap_NetIncomeLoss	$ 157us-gaap_NetIncomeLoss	$ 169us-gaap_NetIncomeLoss	$ (225)us-gaap_NetIncomeLoss
Basic and diluted earnings / (loss) per share from continuing operations attributable to Trio-Tech International	$ 0.06	$ 0.04	$ 0.05	$ (0.06)
Basic and diluted earnings per share from discontinued operations attributable to Trio-Tech International		$ 0.01
Basic and diluted earnings / (loss) per share from net (loss) / income attributable to Trio-Tech International	$ 0.06us-gaap_EarningsPerShareBasic	$ 0.05us-gaap_EarningsPerShareBasic	$ 0.05us-gaap_EarningsPerShareBasic	$ (0.06)us-gaap_EarningsPerShareBasic
Number of common shares used to compute earnings per share - basic	3,513	3,513	3,513	3,513
Dilutive effect of stock options	16	69	41
Number of common shares used to compute earnings per share - diluted	3,529	3,582	3,554	3,513

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