1. ORGANIZATION AND BASIS OF PRESENTATION (Details)	Sep. 30, 2012
ExpressTestCorporationDormant [Member]
Ownership	100.00%
Location	Van Nuys, California
TrioTechReliabilityServicesDormant [Member]
Ownership	100.00%
Location	Van Nuys, California
KTSIncorporateddbaUniversalSystems [Member]
Ownership	100.00%
Location	Van Nuys, California
EuropeanElectronicTestCentre [Member]
Ownership	100.00%
Location	Dublin, Ireland
TrioTechInternationalPteLtd [Member]
Ownership	100.00%
Location	Singapore
UniversalFarEastPteLtd [Member]
Ownership	100.00%
Location	Singapore
TrioTechInternationalThailandCoLtd [Member]
Ownership	100.00%
Location	Bangkok, Thailand
TrioTechBangkokCoLtd [Member]
Ownership	100.00%
Location	Bangkok, Thailand
TrioTechMalaysiaSdnBhd [Member]
Ownership	55.00%
Location	Penang and Selangor, Malaysia
TriTechKualaLumpurSdnBhd [Member]
Ownership	55.00%
Location	Selangor, Malaysia
PrestalEnterpriseSdnBhd [Member]
Ownership	76.00%
Location	Selangor, Malaysia
TrioTechSuzhouCoLtd [Member]
Ownership	100.00%
Location	Suzhou, China
TrioTechShanghaiCoLtd [Member]
Ownership	100.00%
Location	Shanghai, China
TrioTechChongqingCoLtd [Member]
Ownership	100.00%
Location	Chongqing, China
SHIInternationalPteLtd [Member]
Ownership	55.00%
Location	Singapore
PTSHIIndonesia100ownedbySHIInternationalPteLtd [Member]
Ownership	55.00%
Location	Batam, Indonesia
TrioTechTianjinCoLtd [Member]
Ownership	100.00%
Location	Tianjin, China